Research by DoINeedAPermit Research Team · Updated May 2026
The Short Answer
A full bathroom remodel in The Colony requires a permit if you're relocating plumbing fixtures, adding electrical circuits, converting a tub to shower, installing a new exhaust fan duct, or moving walls. Surface-only work like tile, vanity, or faucet replacement in place does not need a permit.
The Colony Building Department enforces the 2015 International Building Code (or later edition adopted by the City of The Colony), which means your bathroom remodel triggers permitting whenever structural, plumbing, electrical, or waterproofing assemblies change. Unlike some Collin County cities that grandfather older homes or offer streamlined interior renovation pathways, The Colony applies full code review to any project involving fixture relocation, new circuits, or tub-to-shower conversion — meaning plan review is required, not over-the-counter approval. The City of The Colony does NOT offer a separate 'cosmetic bathroom' exemption; if your work crosses into mechanical systems (exhaust duct installation, drain relocation, GFCI/AFCI circuit additions), you file a full plumbing and electrical permit, not a minor modification. Permit valuations typically start at $3,000–$8,000 for a mid-range bathroom remodel, generating fees of $200–$600. The online permit portal is available through the City of The Colony website, though many contractors still file in person at City Hall. Plan review typically takes 2–5 weeks; if the plan shows missing waterproofing detail or duct termination, expect a first-round rejection and a 1-week resubmit cycle.

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

The Colony full bathroom remodel permits — the key details

The threshold for a permit in The Colony starts with any change to plumbing, electrical, ventilation, or waterproofing assemblies. If you're moving the toilet, sink, or shower/tub to a new location, you file a plumbing permit under the 2015 IBC (or the code edition currently adopted by the city; confirm this with the Building Department). Relocating a drain requires a new trap arm layout, and IRC P2706 sets a maximum trap arm length of 6 feet before the vent — exceeding this is a common plan-review rejection in The Colony. If you're converting a bathtub to a shower (or vice versa), the waterproofing assembly changes from IRC R702.4.2-compliant tub surround (typically tile over cement board with a pan membrane) to a full shower-pan assembly with a sloped base and drain fitting, and this waterproofing change requires a permit and plan review. Adding a new exhaust fan or replacing an existing one in-place with a new duct run (rather than tying into existing ductwork) triggers a mechanical permit; IRC M1505.2 requires the duct to terminate to outdoors (not into an attic or soffit), and the plan must show the termination location, duct size (typically 4-inch minimum for a single-fan bathroom), and insulation (required in The Colony climate zones to prevent condensation). Adding electrical circuits — whether for a heated towel rack, ventilation fan, or new outlet — requires an electrical permit and GFCI/AFCI layout per NEC 210.52(D) and 210.12(B). The Colony Building Department does not issue 'preliminary' or 'sketch' permits for bathrooms; you submit a full set (floor plan showing fixture locations, plumbing and electrical one-line drawings, waterproofing detail for any tub/shower assembly, and exhaust duct routing) and expect a full plan review cycle.

The cost structure for bathroom permits in The Colony is typically based on project valuation. A full bathroom remodel (new fixtures, tile, flooring, and possible fixture relocation) is valued at $3,000–$8,000; The Colony's permit fee schedule applies a percentage of valuation (usually 1.5–2% of the first $20,000), resulting in a $200–$400 base permit fee. Additional fees apply for electrical permits ($100–$200) and plumbing permits ($100–$200) if filed separately; some contractors bundle these into a single 'Bathroom Remodel' permit to reduce administrative cost, but this is less common. Inspections are staged: (1) rough plumbing (drain and vent lines before drywall), (2) rough electrical (circuits and boxes before drywall), (3) framing/drywall inspection (if walls are moved), and (4) final inspection (fixtures set, waterproofing visible, duct termination confirmed). If you are not moving walls or relocating fixtures, the Building Department may waive the framing and drywall inspections, but this is at the inspector's discretion. Plan review in The Colony typically takes 2–5 weeks; if the initial plan is incomplete (missing duct termination, waterproofing detail, or GFCI notation), expect a first-round rejection email and a 7-day resubmit window. Some contractors work with the city's online portal to upload revisions; others coordinate directly with the plan reviewer to avoid a second rejection cycle.

The Colony's location in North Texas (primarily the 3A/4A climate zone, depending on exact subdivision) affects ventilation and waterproofing rules. Exhaust fans must terminate to the exterior (not into attic or soffit) per the adopted code; in The Colony's humid subtropical climate, indoor condensation from bathroom exhaust is a leading cause of mold claims, so the city enforces IRC M1505.2 strictly. Ductwork insulation is not mandated by IRC but is strongly recommended in The Colony to prevent condensation in unconditioned attics; the Building Department does not require it on the permit, but insurance carriers and lenders may request it as a condition of coverage. For tub-to-shower conversions, the waterproofing assembly must be detailed on the plan: the standard is a cement-board substrate with a liquid or sheet-membrane waterproof layer, sloped base (minimum 1/4 inch per foot toward the drain), and a properly seated drain fitting (pan connecter per ANSI A112.6.2). The City of The Colony does not allow shower pans to be installed directly over drywall; this is a common rejection. Tub and shower valves must be pressure-balanced or thermostatic per IRC P2708.2 (required for all new installations nationwide, but The Colony inspectors specifically verify this on the fixture spec sheet). If the bathroom is in a home built before 1978, lead-based paint disclosure rules apply under federal law; contractors must disclose lead risks to the homeowner and follow EPA RRP (Renovation, Repair, and Painting) rules, though this is a federal requirement, not City of The Colony-specific.

The Colony's permitting process is primarily online via the City's permit portal, but many smaller contractors and homeowners still file in person at City Hall (located in The Colony city center; address and hours should be confirmed on the City website). The portal allows you to upload plans, pay fees, and track inspection status, but the system sometimes experiences delays during peak permit seasons (spring/early summer in North Texas). If you are filing as an owner-builder (which is allowed in Texas for owner-occupied residential projects under Texas Property Code 1702.003), you do not need a general contractor license, but you still must pull permits in your name and pass inspections. The City of The Colony does not require owner-builders to post a bond or carry liability insurance on the permit itself, but if you hire subcontractors (plumber, electrician), those subs must be licensed in Texas. A common mistake is hiring an unlicensed 'handyman' to do electrical or plumbing work; The Colony inspectors will reject the rough inspection and require the work to be torn out and redone by a licensed sub, costing $2,000–$5,000 in rework. The City does allow owner-builders to do tile, drywall, painting, and fixture installation themselves; only licensed plumbers and electricians can pull rough plumbing and electrical permits in Texas, though an owner-builder can oversee the work.

Plan rejection scenarios are common in The Colony for bathroom permits, so understanding the most frequent rejections saves time and money. Missing waterproofing detail (no cement-board spec, membrane type, or sloped-base drawing) is the #1 rejection for tub-to-shower conversions; the plan must show the shower base slope, pan connecter location, and membrane type (liquid or sheet), with a note stating 'cement board substrate per IRC R702.4.2'. Missing or unclear GFCI notation on electrical plans is the #2 rejection; the plan must clearly label 'GFCI protected outlet' or 'AFCI breaker' for all branch circuits in the bathroom per NEC 210.52(D) and 210.12(B). Missing duct termination detail for exhaust fans is #3; the plan must show where the 4-inch duct exits the building (roof penetration, wall penetration, soffit location), and a note stating 'terminate to exterior per IRC M1505.2' or 'duct not to terminate into attic'. Trap arm length violations (over 6 feet per IRC P2706) are less common now because most remodels keep the toilet in place, but if you're moving a toilet more than a few feet from the vent stack, the plan must show the trap-arm measurement. Once you address the first-round rejection, resubmit within 7 days; the second review is typically faster (3–7 days) because the reviewer is only checking your corrections, not re-reviewing the entire plan.

Three The Colony bathroom remodel (full) scenarios

Scenario A
Vanity and toilet in place, new tile surround and exhaust fan duct (Legacy subdivision, 1970s home)
You're keeping the toilet and sink in their original locations but replacing the tile walls, vinyl flooring, vanity cabinet, and converting the old exhaust duct (which currently dumps into the attic) to a new 4-inch duct that exits through the roof. The bathroom is approximately 5 by 8 feet, and the remodel scope is $4,500 (material and labor). Because you're not moving plumbing fixtures, no plumbing permit is required for drain/vent lines; however, the new exhaust fan duct requires a mechanical permit under The Colony code. The electrical plan must show GFCI protection for the new exhaust fan circuit (if adding a new 120-volt circuit) or confirmation that the fan will tie into an existing GFCI-protected bathroom circuit. The plan submission includes (1) floor plan showing new duct routing and roof termination detail, (2) one-line electrical drawing showing GFCI protection and fan circuit amperage, and (3) a waterproofing note confirming tile-over-cement-board substrate with a liquid or sheet membrane behind the tile (not just direct tile-to-drywall, which The Colony does not permit). Permit fee is approximately $250–$350 (mechanical permit for the exhaust duct plus the bathroom remodel base fee). Plan review takes 2–3 weeks. Inspections include (1) rough mechanical (exhaust duct installed and routed correctly, termination hole drilled but not finalized until final), (2) rough electrical (exhaust fan circuit GFCI-protected and wired), and (3) final inspection (duct termination sealed with flashing, new fan operational, tile and waterproofing complete). Timeline from permit issuance to final approval is typically 3–4 weeks, depending on your contractor's inspection scheduling.
Mechanical permit required (new duct exit) | Electrical GFCI required | Waterproofing detail (cement board + membrane) specified | Plan review 2–3 weeks | Permit fee $250–$350 | No plumbing permit (fixtures in place) | Total project estimate $4,500–$6,000
Scenario B
Tub-to-shower conversion, relocated toilet, new electrical panel in bathroom (Oak Hill subdivision, 2000s home)
You're gutting the bathroom, moving the toilet 8 feet to a new wall (new vent-stack tie-in or existing vent relocation), converting the bathtub to a large walk-in shower with a curb-less base (sloped concrete pan), and adding a dedicated 20-amp electrical circuit for a heated towel rack and new exhaust fan. The bathroom is 6 by 10 feet, and the project valuation is $8,500. This scope requires both plumbing and electrical permits. The plumbing plan must show (1) new toilet location with trap-arm length measurement (must be ≤6 feet from the vent stack per IRC P2706), (2) new shower drain location with the pan connecter detail, and (3) whether you are tying into an existing vent stack or adding a new vent line. The shower waterproofing detail is critical: The Colony does not accept shower pans installed directly over framing; the plan must specify a sloped concrete pan, a sheet-membrane or liquid-membrane waterproof layer, and the drain fitting type (typically a Kohler or similar ABS pan connecter with a weir and trap primer per ANSI A112.6.2). The plumbing rough inspection verifies that the toilet and drain are properly roughed in, the vent line is sloped correctly (minimum 1/4 inch per foot), and the trap arm does not exceed 6 feet. The electrical plan must show (1) the 20-amp dedicated circuit for the heated towel rack (GFCI-protected per NEC 210.52(D)), (2) the exhaust fan circuit with GFCI protection, and (3) any recessed lighting or ventilation fan locations. The electrical rough inspection verifies that all boxes are properly mounted, circuits are GFCI-protected, and the panel is correctly labeled. If you are moving walls to relocate the toilet, a framing/drywall inspection is also required. Permit fees total approximately $450–$650 (plumbing $150–$250, electrical $150–$250, base remodel fee $150–$200). Plan review takes 3–5 weeks due to the complexity of the plumbing and electrical layouts. Inspections are staged: (1) framing (if walls move), (2) rough plumbing, (3) rough electrical, (4) drywall, and (5) final. Total timeline from permit issuance to final approval is 5–8 weeks.
Plumbing permit required (toilet + drain relocation) | Electrical permit required (new circuits, GFCI) | Waterproofing detail (sloped pan, membrane, drain fitting) required | Trap-arm measurement ≤6 feet | Framing inspection (if walls move) | Plan review 3–5 weeks | Permit fees $450–$650 | Total project estimate $8,000–$12,000
Scenario C
Faucet swap, vanity replacement in place, new tile flooring (Lakeside Estates, 1980s condo)
You are replacing the existing faucet (same supply-line locations), removing the old vanity cabinet and installing an identical new vanity in the same footprint, and replacing vinyl flooring with ceramic tile. No plumbing fixtures are being relocated, no new electrical circuits are being added (the vanity lighting remains in place), and no changes to exhaust ventilation are being made. This is surface-only work: the plumbing and electrical systems are untouched, and the structural elements (walls, studs, framing) are not modified. Under The Colony Building Department rules and the 2015 IBC, this scope does NOT require a permit. You do not need to file a bathroom permit, pay permit fees, or schedule inspections. However, if the flooring replacement requires the removal of vinyl that was installed before 1978 (and may contain asbestos), you should disclose this to your contractor and follow EPA/OSHA rules for asbestos-containing material; this is a federal/state requirement, not a City of The Colony permitting issue, but it affects scope and cost. The tile installation does not require waterproofing detail because the flooring is not a water-barrier assembly (unlike a shower surround or tub surround). If you were to add a new drain in the floor (for a future steam shower or wet room), that would trigger a plumbing permit, but simple flooring replacement does not. Vanity and faucet replacement are exempt under the 'fixture swap in place' rule. Note: if your condo's HOA or master-lease agreement requires approval for any bathroom work, you must still follow those rules, even though the City does not require a permit. Some HOAs in The Colony require HOA permits for interior remodeling; check your CC&Rs or contact your HOA before starting work.
No city permit required | Surface-only work (vanity, faucet, flooring) | Electrical and plumbing systems untouched | No inspections required | No permit fees | Check HOA rules (if applicable) | Total project estimate $2,000–$4,000

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The Colony waterproofing rules for tub and shower conversions

IRC R702.4.2 mandates that shower and tub areas be provided with a waterproof backing, and The Colony Building Department enforces this rule strictly during final inspections. The code does not specify a single material, but the acceptable methods are: (1) cement board (minimum 1/2 inch thick for showers, 1/4 inch for tub surrounds) with a liquid-applied or sheet-membrane waterproofing layer, or (2) a pre-manufactured waterproof backer board (like Kerdi or equivalent), or (3) a solid tile-backer system (like Wedi or equivalent) that is factory-sealed. The City of The Colony does not accept standard drywall or greenboard behind shower tile, even if a caulk sealant is applied; inspectors will fail the final inspection and require removal and replacement with an approved waterproofing system.

For tub-to-shower conversions specifically, the slope of the shower base is critical. The base must slope a minimum of 1/4 inch per foot toward the drain (typically resulting in a 2–3 inch slope across a 6-foot-wide shower). The slope is usually achieved with a sloped concrete pan or a sloped pre-fabricated base; the plan must show the base type and slope measurement. If you are installing a curb-less (zero-threshold) shower, the sloped pan design is even more important because there is no physical curb to contain water — the slope must be steeper or the drain must be larger to prevent water from running into the adjacent bathroom. The City of The Colony does not have a specific minimum drain size for curb-less showers, but standard practice is 2-inch ABS drain pipe (larger than the typical 1.5-inch toilet drain) to handle the potential water volume.

The drain fitting (pan connecter) must be sealed properly to the base and the substructure. IRC P2706 requires a trap and vent, and the trap must be accessible for cleaning. If the shower pan is in a concrete slab (common in some The Colony developments), the drain fitting must have a weir (overflow lip) and a trap primer to prevent sewer gases from entering the bathroom through the drain — this is often overlooked in DIY or contractor plans and causes a first-round rejection. The plan or specification must note the drain type (e.g., 'Kohler WaterTile pan connecter ANSI A112.6.2 compliant') so the inspector knows the component is code-approved.

Lead-based paint is a consideration for bathrooms in pre-1978 homes in The Colony (many 1970s and early 1980s homes in Legacy and other older subdivisions). If tile removal, drywall demolition, or sanding is planned, the contractor must test for lead, obtain a lead-safe work clearance, and follow EPA RRP (Renovation, Repair, and Painting) Rule procedures. The City of The Colony does not enforce lead-paint disclosure during permitting, but lenders, insurers, and future buyers will ask about it during a real-estate transaction. If lead is found and not properly managed, the property becomes unmarketable and the homeowner is liable for remediation costs ($5,000–$15,000 in some cases).

Electrical code for bathroom circuits and GFCI/AFCI requirements in The Colony

NEC 210.52(D) requires all outlets in a bathroom to be on dedicated 20-amp circuits, and all outlets must be GFCI-protected. The Colony Building Department enforces this rule on both rough electrical inspections and final inspections. This means that if you are adding a new outlet (for a heated towel rack, for example), that outlet must be on its own 20-amp GFCI-protected circuit, not sharing a circuit with the exhaust fan or any other load. Some older homes in The Colony have bathrooms with non-dedicated circuits or unprotected outlets; when you remodel, the Code requires you to bring the bathroom into compliance, which may mean adding a new breaker in the electrical panel or installing an outlet-level GFCI (rather than a breaker-level GFCI).

AFCI (Arc-Fault Circuit Interrupter) protection is also required for certain circuits in bedrooms and living areas per NEC 210.12, but bathrooms are not specifically called out for AFCI. However, if the bathroom has any outlets or circuits that extend into an adjacent bedroom or living space (for example, an outlet in the bathroom that is on the same circuit as a bedroom outlet), that circuit must be AFCI-protected. The City of The Colony does not routinely flag this on the plan, but a diligent inspector will catch it during rough or final inspection.

Ventilation-fan circuits are typically 120-volt, 15-amp, and do not require a dedicated 20-amp circuit (they can share a circuit with lighting in some cases, but best practice is to dedicate them). If you are adding a new exhaust fan, specify the voltage and amperage on the electrical plan so the inspector knows the breaker size is correct. If the fan is wired on a switch loop, the plan must show the switch location and wire routing.

Recessed lighting in bathrooms must be rated for damp or wet locations (per NEC 410) and must be GFCI-protected if the light is over or within 6 feet of a bathtub or shower. Many contractors in The Colony default to standard recessed lights, which are not damp-rated; the plan review will flag this, and you'll have to specify damp-rated units (which are slightly more expensive). The final inspection will verify that the fixtures are indeed damp-rated (usually stamped on the housing).

City of The Colony Building Department
The Colony City Hall, The Colony, TX 75056 (confirm address on City website)
Phone: (972) 625-1600 (main) — request Building Department | https://www.thecolonytx.gov/ (check for permit portal link or contact city directly for online submission details)
Monday–Friday, 8:00 AM–5:00 PM (verify on City of The Colony website)

Common questions

Do I need a permit to replace a toilet or faucet in The Colony?

No. Replacing a toilet, faucet, or vanity in the same location without moving supply lines or drains is exempt from permitting in The Colony. This is considered maintenance or fixture swap-out. However, if you are relocating the toilet to a new location or adding a new drain, a plumbing permit is required. If you are unsure whether your supply/drain lines are moving, contact the City of The Colony Building Department before starting work.

What is the most common reason The Colony Building Department rejects a bathroom-remodel plan?

Missing waterproofing detail for tub-to-shower conversions. The plan must specify cement-board substrate, the type of waterproof membrane (liquid or sheet), the sloped base design (minimum 1/4 inch per foot), and the drain-fitting type. Submitting a plan without this detail will result in a first-round rejection and a 7-day resubmit window. Get this detail right the first time to avoid delays.

Can I do a bathroom remodel in The Colony without a licensed plumber or electrician?

If you are the owner-builder of an owner-occupied home, you can pull the permits in your name and do cosmetic work (tile, drywall, painting, vanity cabinet installation, etc.) yourself. However, only licensed plumbers can rough-in and finalize plumbing work (drain, trap, vent lines, supply lines), and only licensed electricians can rough-in and finalize electrical circuits. The City of The Colony requires licensed subs to sign the permit and pass inspections. Hiring unlicensed labor will result in a failed inspection and forced removal/rework.

How long does plan review take in The Colony for a full bathroom remodel?

Initial plan review typically takes 2–5 weeks, depending on the complexity of the scope and the completeness of your submission. If the plan is missing critical details (waterproofing, GFCI notation, duct termination), expect a rejection email within 1–2 weeks; you then have 7 days to resubmit corrections. The second review is usually faster (3–7 days). Submitting a complete plan the first time saves 1–2 weeks.

Is lead-paint testing required for bathroom remodels in The Colony pre-1978 homes?

The City of The Colony does not require lead testing on the permit itself, but federal law (EPA RRP Rule) requires that anyone renovating, repairing, or painting a pre-1978 home must disclose lead risks and follow lead-safe work practices (containment, cleaning, etc.). If tile removal or drywall demolition is planned, lead testing is strongly recommended. If lead is found and not managed properly, the homeowner is liable for remediation costs and potential disclosure violations in a future real-estate transaction.

Can I convert my bathtub to a shower in The Colony without a permit?

No. A tub-to-shower conversion changes the waterproofing assembly and drainage system, triggering a plumbing permit and plan review. The City of The Colony requires the plan to detail the waterproofing method (cement board + membrane, sloped base, drain type), and the shower base must slope a minimum of 1/4 inch per foot toward the drain. The conversion is not exempt under any circumstance.

What happens if I find structural damage (mold, rot, asbestos) during my bathroom remodel in The Colony?

Stop work immediately and contact the City of The Colony Building Department to report the discovery. Depending on the extent of damage, you may need to file an amended scope-of-work or obtain a separate remediation permit. Mold and asbestos require specialized contractors; the cost can range from $1,000–$5,000 or more. Do not attempt to remove or encapsulate these materials yourself — it is illegal and poses health risks.

Do I need HOA approval for a bathroom remodel in The Colony?

If your home is in an HOA-governed community (many subdivisions in The Colony are HOA-controlled), check your CC&Rs and HOA bylaws. Some HOAs require architectural approval or HOA permits for interior remodeling, even though the City of The Colony does not. Failing to get HOA approval can result in fines or a demand to remove the work. Contact your HOA before pulling a city permit.

How much does a bathroom permit cost in The Colony?

Permit fees are based on project valuation and typically range from $200–$600 for a full bathroom remodel. A remodel with fixture relocation and plumbing changes (valuation $5,000–$8,000) might cost $350–$500 in combined plumbing, electrical, and base fees. Ask the Building Department for a fee estimate based on your scope before pulling the permit.

What inspections do I need to schedule for a bathroom remodel in The Colony?

Typical inspections are: (1) rough plumbing (drain and vent lines), (2) rough electrical (circuits and GFCI protection), (3) framing (if walls are moved; may be waived if no structural changes), and (4) final inspection (all systems complete, waterproofing visible, duct termination sealed). The inspector will schedule these as rough work is completed; allow 1–2 weeks between inspections for contractor work.

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 The Colony Building Department before starting your project.