Bathroom Remodel Permit in Hollister, CA (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in Hollister requires a permit if you relocate plumbing fixtures, add electrical circuits, install new exhaust ventilation, convert a tub to shower, or move walls. Surface-only work — tile, vanity swap in place, faucet replacement — is exempt.

Hollister Building Department operates under California Building Code (Title 24) and uses the CBC's 2022 edition, adopted locally with minimal amendments. The city does NOT have a blanket exemption for bathroom cosmetics (unlike some California jurisdictions that grandfather small remodels under 75 square feet). This means even a vanity-only swap requires a careful read: if the new vanity uses the same drain and supply lines, no permit. If you relocate the vanity to a new wall or add a new drain line, Hollister's plan-check process flags it as a plumbing change and requires a full permit. Hollister sits in San Benito County on the eastern edge of the Bay Area, which means you'll be dealing with the City's actual (not county) Building Department at City Hall — a smaller office than regional neighbors like San Jose or Monterey, which means slower turnarounds but more direct contact with inspectors. The city does not require online filing for bathroom permits (most are submitted in-person or by mail), and there is no expedited or over-the-counter review available; all plans go to the same review queue. If your home was built before 1978, lead paint clearance is triggered on any project disturbing more than one square foot per surface, which Hollister enforces strictly due to County health orders.

What happens if you skip the permit (and you needed one)

Stop-work orders carry a $500–$1,200 fine in Hollister, plus you'll owe double the original permit fee and must re-pull the permit before resuming; total impact: $1,000–$2,500 depending on project valuation.
Unpermitted plumbing work voids your homeowner's insurance water-damage coverage in most California policies — a burst P-trap or supply line during use becomes YOUR bill, not the insurer's ($5,000–$25,000 typical water damage claim).
Sale disclosure: California requires you to disclose unpermitted work on the TDS (Transfer Disclosure Statement); buyers often demand a price reduction of 10–20% of the remodel cost or walk away entirely.
County health department can condemn the bathroom and issue a notice of violation requiring immediate corrective permits; fines escalate if the room remains out of compliance ($250–$500 per month in San Benito County).

Hollister full bathroom remodel permits — the key details

Hollister's Building Department requires a standard building permit for any bathroom remodel that involves fixture relocation, new electrical circuits, exhaust ventilation, wall removal, or tub-to-shower conversion. The city references Title 24 (California Building Code), and the most critical sections for bathroom work are CBC P2706 (drainage fitting slopes and trap-arm lengths — trap arms cannot exceed 3 feet horizontal before entering the main stack), CBC E3902 (GFCI protection on all receptacles within 6 feet of a sink or tub), and CBC M1505 (exhaust fan CFM ratings and ductwork termination). Hollister does not offer a blanket exemption for small bathrooms or cosmetic work; instead, the city applies a fixture-by-fixture test: if the fixture stays in the same location and uses the same supply/drain stubouts, no permit is required. If it moves even 12 inches, or if you add a new circuit, the entire project triggers plan review. This means a homeowner who wants to avoid permits must limit work to tile, paint, faucet replacement (in-kind swap only), and mirror/lighting within the existing electrical boxes.

The City of Hollister Building Department operates during standard business hours (Monday–Friday, 8 AM to 5 PM, closed holidays) and does not maintain a 24/7 online permit portal. Applicants must submit plans in person at City Hall or by mail, and the city does not accept digital submissions for bathroom permits — you will need two or three full-size sets of plans (11x17 or 11x14 acceptable), plus a completed permit application (available at the city's website or in person). Plan-check turnaround is typically 2–4 weeks from submission; the city may issue a Request for Information (RFI) if the plans lack waterproofing detail (a common rejection reason in Hollister: shower pans must specify either a mud-bed with fully bonded CPE membrane and slope to drain, or a pre-formed acrylic pan with adequate slope — the CBC requires certified waterproofing, and Hollister inspectors will photo-document the assembly). Once the plan check clears, you'll receive a permit card (valid for 180 days, renewable once) and a list of required inspections: rough plumbing (after drain and vent lines are run but before drywall), rough electrical (after wiring is in place), framing (if walls are moved), drywall (if required by plan), and final (full walk-through before occupancy).

Permit fees in Hollister are based on valuation: the city charges approximately $12–$15 per $1,000 of estimated project cost, with a minimum of $300 for bathroom permits. A mid-range full remodel (new vanity, toilet, tub-to-shower conversion, new ductwork, electrical circuits, tile) typically values at $15,000–$25,000, resulting in permit fees of $350–$500. Plan-check review by the city is included in that fee; no separate inspection fees are charged, but if you fail an inspection and need to re-inspect after corrections, Hollister does not impose a re-inspection fee as long as the corrections are made within 30 days. If corrections take longer, the permit lapses and you must re-pull the entire permit (full fee), which is rare but worth avoiding. The city also requires a Notice of Responsibility (NOR) form if you hire a contractor; if you pull the permit as owner-builder, you do not need NOR, but you ARE liable for all work and must sign the permit card. California B&P Code Section 7044 allows owner-builders to perform work on their own residence, but electrical and plumbing work must be performed by a licensed electrician and plumber, respectively — you cannot do that work yourself in Hollister, even as the owner. This is a critical distinction many Hollister homeowners overlook.

Waterproofing and ventilation are the two largest points of failure in Hollister bathroom permits. For showers, CBC R702.4.2 requires a fully waterproofed assembly: the city accepts either a pre-fab acrylic pan with proper slope (minimum 1/8 inch per foot) and a lined drain, OR a mud bed (mortar bed) with a fully bonded CPE membrane below the tile. Cement board alone is NOT acceptable in Hollister's interpretation; inspectors will reject plans that show cement board without a separate membrane layer. Your plan must specify the waterproofing product by name and show the slope detail. For exhaust ventilation, CBC M1505 requires a continuous duct (no fabric ducts, no flexible vinyl ducts that dead-end inside walls) terminating to the outside; the minimum CFM is 50 CFM for interior bathrooms, or 20 CFM if the duct is continuous and opens to a central exhaust system. Ducts cannot be undersized: a typical 5x8 bathroom requires a 6-inch duct (rated 80–100 CFM at the fan). Hollister inspectors photograph the ductwork installation during rough inspection and will flag improper terminations (ducts that end in an attic crawlspace are a common violation). If you are converting a tub to a shower, the waterproofing membrane becomes the critical inspection point; expect the inspector to spend 10–15 minutes verifying the membrane overlap, sealing of penetrations (drain, valve), and slope of the pan during rough plumbing inspection.

Lead-paint and asbestos disclosure requirements apply to any bathroom remodel in a home built before 1978 (nearly all Hollister historic homes and many post-war structures). If your work disturbs more than one square foot per surface of pre-1978material, Hollister requires an EPA-certified lead abatement contractor or a certified lead-safe work practices protocol (available from the County Environmental Health Department). This is often overlooked by homeowners and can add $1,500–$3,000 to a full remodel if the home has lead paint. The city may not catch this during plan review, but the county health department can issue a notice of violation during or after the project if lead dust is detected. Always obtain a lead disclosure from the seller (or from county records) before starting work, and budget for lead-safe practices if the home is older than 1978. Insurance, final permit sign-off, and future resale all hinge on this documentation, so treating lead-paint compliance as optional is a high-risk mistake in Hollister.

Three Hollister bathroom remodel (full) scenarios

Scenario A

Vanity swap and new exhaust fan, Hollister downtown (1950s cottage, same drain location)

You are replacing a 24-inch vanity with a new 30-inch model in the same location, and the bathroom has no exhaust fan — you want to add one ducted to the roof. The new vanity will use the existing 1.5-inch drain and supply lines without modification. The exhaust fan requires a new 6-inch duct run through the attic and a roof terminator. This project REQUIRES a permit because of the exhaust fan addition. Even though the vanity swap is in place, the exhaust ductwork triggers plan review: Hollister will require an electrical plan showing the fan circuit (dedicated 20-amp circuit, GFCI protected per CBC E3902, even though the fan itself is not a receptacle — the switch loop must be on a protected circuit), a mechanical/framing plan showing the duct size (6 inch, minimum 80 CFM for a typical 40 sq ft bathroom), the route through the attic, and the roof termination detail. The city will note that the attic space must have adequate clearance (minimum 12 inches above the duct in unconditioned attic space, per CBC M1505). Plan check will take 2–3 weeks. Permit fee is approximately $350 (based on a $12,000 estimated valuation: vanity $400, fan $200, labor $11,400). Inspections required: rough electrical (after wiring and switch loop are in place), rough framing (after duct path is cut through joists — inspectors verify duct sizing and clearance), and final (ductwork and fan operational). Total project cost: $1,200–$2,000 (vanity, fan, ductwork, electrician labor, and permit fees). Timeline: 3–4 weeks from permit application to final inspection. If you skip the permit and the county discovers the unpermitted duct (common during a later roof or attic inspection), fines start at $500, plus you'll owe the permit fee retroactively plus a $500–$1,000 enforcement surcharge.

Scenario B

Tub-to-shower conversion with new plumbing, tile surround (1970s slab-on-grade home, Hollister hills)

You are gutting a small bathroom on a slab foundation and converting a built-in cast-iron tub to a 36x36-inch tile shower. The new shower will have a new drain line (requiring a new P-trap under the slab or relocation of the existing trap), a new mixing valve (pressure-balanced cartridge), and a fully tiled surround with a mud-bed waterproofing system. This is a PERMIT-REQUIRED project because you are: (1) relocating a plumbing fixture (drain); (2) changing the drainage assembly; (3) modifying the water supply to a new valve; and (4) creating a new waterproofing assembly. Hollister's plan review will focus on three things: (a) the waterproofing system detail (you must specify a CPE membrane with sealed seams, minimum 6 inches up the walls, proper slope to drain, and a drip edge at the threshold); (b) the drainage assembly (trap arm length, vent sizing, slope of the pan floor to drain); and (c) the pressure-balanced valve (spec sheet required — the valve must be ASSE 1016 certified, common in California to prevent scald risk). If the home is on a slab, you may need to break the slab to relocate the drain, which requires structural approval. Permit fee is approximately $450 (based on a $18,000 valuation: tile, labor, materials). Plan check will take 3–4 weeks. Inspections: rough plumbing (drain and vent before concrete patch), framing (if walls are removed or added), waterproofing membrane (before tile — inspector must photograph the membrane installation, seams, and slope), tile (rough tile before grout), and final. Total project cost: $5,000–$9,000 (tile, labor, waterproofing, valve, permits). Timeline: 4–6 weeks. If you skip the permit, the unpermitted plumbing creates the highest financial risk: a future water intrusion behind the tile (leaking grout is inevitable within 5–10 years) will be your liability, not the builder's, because there is no permitted waterproofing record. Homeowner's insurance may deny the water-damage claim (common dispute), leaving you with a $10,000–$20,000 mold remediation bill.

Scenario C

Faucet replacement and tile refresh (same location, no electrical work)

You are replacing an old two-handle faucet with a new single-handle model on the existing vanity, and you are re-tiling the walls with new tile over the existing substrate. The vanity is not moving, the drain is not being touched, and you are not adding any exhaust ventilation or electrical circuits. This project does NOT require a permit in Hollister because you are performing surface-only work: the faucet swap is an in-place replacement (water supply lines remain the same), the tile is applied over the existing substrate (no waterproofing assembly change), and no electrical work is involved. You do not need a plan, you do not submit an application, and you do not schedule an inspection. However, note: if the existing walls have lead paint (pre-1978 home) and you are disturbing more than one square foot per surface by removing old tile, you should follow lead-safe work practices (HEPA vacuum, wet cleaning, containment). This is not a permit issue, but it is a legal requirement under EPA RRP Rule (40 CFR Part 745) and California lead-paint disclosure requirements. If the bathroom has mold or asbestos under the old tile, those materials may trigger different requirements, but Hollister does not require a permit for their discovery — you contact the County Environmental Health Department for guidance. Total project cost: $300–$800 (materials and labor, no permit fee). Timeline: weekend project or 1–2 days with a tile contractor. If you hire a contractor, make sure they carry general liability insurance and can provide proof of California contractor license (State License Board); this is not about permits but about protecting yourself from liability.

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Hollister's plan-review process and common rejections

Hollister's Building Department does not offer plan review online or expedited review; all bathroom permits follow the same queue. You submit two or three full-size plan sets (11x17 inch minimum) showing floor plan, elevation of the fixture layout (especially tub/shower and vanity), electrical plan (GFCI circuits, outlet locations, switch loops), mechanical plan (exhaust duct routing, CFM, termination), and if any waterproofing is involved, a detail drawing of the waterproofing system (cross-section showing membrane, substrate, slope, drain seal). The city does not require architect or engineer stamps for bathroom permits (residential work); a contractor's plan or a homeowner's sketch (if legible) is acceptable. However, hand-drawn plans that lack dimensions, material specs, or detail cause immediate rejections. The most common rejection in Hollister is incomplete waterproofing detail: the plan must show the CPE or sheet-membrane product name, the attachment method (fully bonded, not loose), the seam overlaps (minimum 6 inches per CBC R702.4.2), and the slope to drain. Many homeowners submit plans that say 'tile with waterproofing' without specifying the actual waterproofing system; Hollister will issue an RFI (Request for Information) and delay the permit another 1–2 weeks while you obtain a product spec sheet. A second common rejection is incorrect duct sizing or termination: if your plan shows a flexible dryer-vent duct (vinyl, fabric, or aluminum foil) running to an attic crawlspace, the city will require you to re-design with a rigid 6-inch duct terminating through the roof or an exterior wall. A third rejection involves GFCI protection: if your plan shows a standard 20-amp circuit for the fan and lighting without GFCI, the inspector will flag it. The code requires GFCI protection on all circuits in the bathroom (not just receptacles); the easiest solution is a GFCI breaker in the panel or a GFCI outlet in the switch loop.

Once your plan clears review (typically 2–4 weeks), the city issues a permit card valid for 180 days. You may then begin work and schedule inspections. Hollister inspectors are available Monday–Friday and typically respond to inspection requests within 24–48 hours. The first inspection is usually rough plumbing (after drain and vent lines are in place but before drywall). The inspector will measure trap-arm length (must not exceed 3 feet horizontal run before entering the main vent stack per CBC P2706), check the slope of horizontal drain runs (minimum 1/4 inch per foot), verify vent sizing (minimum 1.5 inches for a bathroom sink, 2 inches for a toilet — but if combining toilet and sink on one vent, 2 inches is required per CBC P2706), and photograph the drain assembly. This inspection typically takes 15–30 minutes. If you are converting a tub to a shower, the inspector will also verify the drain-pan slope and the P-trap location during rough plumbing. The second inspection is rough electrical (after all wiring is run). The inspector will verify that the GFCI circuit is correctly sized (20 amps for a 6-outlet bathroom is standard), that the switch loop is protected, and that any exhaust fan wiring is on a dedicated circuit. The third inspection (if walls are being moved or framing is changed) is a framing inspection; the inspector verifies that any load-bearing walls are properly supported and that duct penetrations through joists or top plates are properly sized and sealed. The fourth inspection, if new drywall is installed, is a drywall inspection; Hollister usually skips this if only the bathroom area is affected and the drywall meets code. The final inspection is the most thorough: the inspector walks through the entire bathroom and verifies that all fixtures are installed per the permit plan, all electrical is operational, the exhaust fan is ducted correctly and operational, waterproofing is in place (if applicable), and all work is code-compliant. If any defects are found, the city issues a 'Notice to Correct' (NTC) listing the defects; you have 30 days to correct them and request a re-inspection (no re-inspection fee if within 30 days). If defects are not corrected within 30 days, the permit lapses and you must re-pull (full fee).

Lead-paint, asbestos, and water quality considerations for Hollister bathrooms

Hollister's historic core (downtown, east of Cienega Road) and much of the post-war neighborhoods (1940s–1970s) were built before 1978, meaning lead paint is almost certainly present. California's EPA-delegated Renovation, Repair, and Painting (RRP) Rule (40 CFR Part 745) requires that any work disturbing more than one square foot per surface of pre-1978 paint must be done using lead-safe work practices: containment (plastic sheeting), HEPA-filtered vacuum, wet cleaning, and disposal of lead-contaminated materials as hazardous waste. This is NOT a permit requirement from Hollister (the city does not enforce RRP directly), but it IS a federal EPA requirement, and violators face fines up to $16,000 per violation. When you pull a permit for a full bathroom remodel in a pre-1978 home, the city may not ask about lead paint on the permit application, but it is YOUR responsibility to comply with RRP Rule. Many homeowners skip this step because they assume the builder will handle it; the builder is only required to use lead-safe practices if you (the customer) notify them in writing that RRP Rule applies. The safest approach is to obtain a lead disclosure from County records, confirm that the home is pre-1978, and then either (a) hire a certified lead-safe contractor (State License Board maintains a registry), or (b) hire an EPA-certified lead inspector to clearance-test the work area before disturbing materials. The cost for lead-safe practices is typically $500–$1,500 for a full bathroom remodel (containment, cleaning, disposal); failure to comply results in a $300–$500 fine per violation from the EPA (detected during a follow-up inspection or complaint). Asbestos was also common in pre-1970s bathrooms (pipe insulation, joint compound, vinyl flooring adhesive, roofing felts). If you discover asbestos during demolition, STOP WORK and contact the San Benito County Environmental Health Department; Hollister does not issue permits for asbestos abatement, but the county does require a licensed asbestos contractor for removal. Do not include asbestos removal in your permit application; address it separately with the county before proceeding with the main remodel.

Water quality in Hollister varies by zone and can affect your material choices for plumbing and fixtures. Much of Hollister sits on expansive clay soils (common throughout San Benito County), which means older homes often have galvanized-steel supply lines that have corroded over decades, creating low water pressure and discolored water. If your home has galvanized lines, you may want to consider replacing them with copper or PEX during a full bathroom remodel (not required by code, but practical). PEX is allowed in California per Title 24 and is becoming more common; Hollister inspectors accept PEX with proper manifold or crimp fittings. The city water supply is from the Hollister Wastewater Department (public utility), and the water is moderately hard (mineral content varies seasonally). If you are installing a new valve or pressure-balancing cartridge, select NSF-certified products rated for hard water (common in California); failure to do so can result in mineral buildup and cartridge failure within 5 years. Your permit plan does not need to specify water hardness, but your contractor should be aware of local conditions. Lead content in supply lines is another concern: federal Safe Drinking Water Act (42 U.S.C. 300g) limits lead content in fixtures to 0.25% (lead-free standard adopted in 2014). All new faucets, valves, and supply connectors must meet this standard; Hollister inspectors may ask to see NSF certification for these components during final inspection. If you are reusing old brass fittings or unlabeled valve bodies, you risk a failed inspection and a demand for replacement, so budget for new, certified components.

City of Hollister Building Department
City Hall, Hollister, CA 95023 (contact city for specific building department address)
Phone: (831) 636-4600 (main city line; ask for Building Department) | https://www.hollisterCA.gov (check for online permit portal under 'Permits' or 'Building')
Monday–Friday, 8:00 AM–5:00 PM, closed holidays

Common questions

Do I need a contractor's license to pull a bathroom permit in Hollister?

No, California B&P Code § 7044 allows owner-builders to pull permits and perform work on their own residence. However, any electrical work must be done by a California-licensed electrician (Class C-10 or higher), and any plumbing work must be done by a California-licensed plumber (Class A or B). You cannot hire an unlicensed person for these trades in Hollister, even if you are the owner. If you hire a licensed contractor to pull the permit on your behalf, they will list themselves as the applicant and will be responsible for all work quality.

Can I do the tile work myself if I get a permit for the plumbing and electrical?

Yes. Tile work is not a licensed trade in California, so you can tile the walls yourself. However, if the tile installation is part of a waterproofing assembly (such as a shower surround), the tile must be applied per the waterproofing detail shown on the permit plan. Hollister inspectors will verify that the tile is installed correctly (no voids, proper sealing at penetrations, adequate slope) during the final inspection. If you tile over an improperly installed waterproofing membrane, the entire assembly will fail inspection and you will be required to remove the tile, correct the membrane, and re-tile — an expensive correction.

How long is a bathroom permit valid in Hollister?

A bathroom permit is valid for 180 days from the date of issuance. If work is not completed within that period, you may request a one-time renewal for an additional 180 days (usually free). If you need more than 12 months to complete the project, the city may require a new permit application and re-plan-check, which costs the full permit fee again. Many homeowners forget the 180-day deadline and end up re-pulling; mark the expiration date on your calendar or with your contractor.

What if I uncover mold or water damage during my bathroom remodel in Hollister?

If you discover mold or active water damage during demolition, stop work immediately and contact a licensed mold remediation contractor. Hollister does not permit mold removal; that falls under San Benito County Environmental Health Department or a private mold contractor. If the mold is extensive (covering more than 10 square feet), the county may require testing and professional remediation before you proceed with the remodel. Do not include mold remediation in your building permit application; address it as a separate scope before remodeling.

Do I need a separate permit for the exhaust fan if I am already getting a permit for plumbing and electrical?

No. The exhaust fan is part of the same building permit. You do not pull three separate permits (plumbing, electrical, mechanical). The single bathroom permit covers all work: plumbing, electrical, and mechanical (ductwork). Your plan must show all three systems, and the city will review them together.

Can I add a second bathroom or expand the existing bathroom during a remodel?

Yes, but it triggers additional requirements. If you are adding a NEW bathroom (not just remodeling an existing one), the project is classified as an addition and requires a separate architectural review, setback verification, and possibly septic or sewer connection permits. If you are expanding the footprint of the existing bathroom (moving walls outward), you may need to verify property lines and setbacks with the City Planning Department. An expansion of the bathroom floor area may also trigger Title 24 energy code compliance (insulation, window requirements if new). Consult Hollister's Planning Department (planning@hollisterCA.gov) before expanding a bathroom; this can add 2–4 weeks to the permitting timeline.

What is the cost difference between a permit for a cosmetic bathroom refresh versus a full remodel?

Hollister charges based on estimated project valuation, not on permit type. A cosmetic refresh (tile and paint, no fixtures moved) that does NOT require a permit costs $0 in permit fees. A full remodel (fixtures moved, new electrical, new ventilation) estimated at $20,000 costs approximately $350–$500 in permit fees. A mid-range remodel ($15,000) costs approximately $300–$400. The city calculates fees as approximately $12–$15 per $1,000 of valuation, with a $300 minimum. If you underestimate valuation on the application, the city may adjust the fee upward during plan review if they believe the valuation is too low; always be realistic with your estimate to avoid delays.

What happens if my existing bathroom has a septic system instead of municipal sewer?

Hollister is served by municipal sewer (Hollister Wastewater Department) in the city limits. If you live in an unincorporated area of San Benito County (outside Hollister city limits), you may have a septic system. If you are remodeling a bathroom with a septic system, you may need a separate septic-system permit from the County Environmental Health Department; the city permit does not cover septic work. The Environmental Health Department will verify that your septic system can handle the additional bathroom load (if adding fixtures). This is a parallel permit process; contact the county at (831) 636-4000 to confirm requirements before remodeling.

Can I use a prefabricated shower unit instead of tile and waterproofing in Hollister?

Yes. Prefabricated acrylic or fiberglass shower units are permitted in Hollister per CBC P2809 and do not require a separate waterproofing membrane (the unit itself is the waterproofing). If you choose a prefab unit, your plan can show a simple detail: the unit, the drain connection, and the slope to drain. Hollister inspectors typically approve prefab units faster than tile-and-membrane because there is less waterproofing detail to review. However, prefab units are generally more expensive ($1,500–$3,000) than tile-and-membrane ($2,000–$4,000 including labor), and if the unit cracks or leaks later, replacement is more complicated than re-tiling. Both options are code-compliant; the choice depends on your budget and long-term preference.

If I start work before the permit is issued, what are the consequences?

Starting work before permit issuance is illegal in Hollister. If the city discovers unpermitted work (via neighbor complaint, code enforcement inspection, or utility notice), you will be issued a Stop Work Order and fined $500–$1,200. You will also be required to obtain a permit retroactively and pay the full permit fee plus an enforcement surcharge ($500–$1,000 additional). The work may be required to be demolished and redone under permit, which can cost thousands of dollars. Always wait for the physical permit card before beginning any work, even if the plan review is verbally approved. The written permit card is your legal authorization to proceed.

Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current bathroom remodel (full) permit requirements with the City of Hollister Building Department before starting your project.

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