Do I need a permit for HVAC work in
Campbell, California?

Campbell HVAC permits — the key details

The City of Campbell Building Department requires mechanical permits for virtually all HVAC installations, replacements, and modifications under 2019 CBC Chapter 12 (Mechanical Systems). A 'replacement' in Campbell's eyes means you're removing the old unit and installing a new one in the same location with the same ductwork and electrical points of entry. If your new unit has different tonnage, requires new ductwork runs, or sits in a different spot (e.g., moving the condenser from the side yard to the rear), you're in 'new installation' territory and need a full mechanical plan. The permit application requires the manufacturer's equipment specifications, ductwork sizing (if altered), electrical nameplate data, and proof of refrigerant recovery (if the old unit contained Freon). Permit fees in Campbell are based on project valuation: a typical single-family residential replacement runs $150–$400 in permit fees (roughly 1.5-2% of the system cost). The city's online portal (accessible via the Campbell city website) allows you to upload documents and track status, though many contractors prefer the certainty of walking permits to City Hall in person. Plan review for a straightforward replacement typically takes 2-5 business days; more complex jobs (ductwork redesign, seismic tie-down, or multi-zone balancing) can stretch to 2-3 weeks.

California Title 24 energy code compliance is non-negotiable in Campbell and is checked during mechanical plan review. Every air-conditioning unit must meet current SEER2 (Seasonal Energy Efficiency Ratio) minimums: as of 2023, that's 13 SEER2 for split systems in Santa Clara County. Heat pumps and variable-refrigerant-flow systems have separate, sometimes more stringent thresholds. Your HVAC contractor or installer must provide a Title 24 compliance certificate (Form HVAC-1 or equivalent) as part of the permit package. Campbell's Building Department will cross-check the unit's nameplate SEER2 rating against the submitted documentation. If you're upgrading from an ancient 10 SEER unit, the new system will almost certainly pass; if you're trying to reuse salvaged equipment or an older stock unit, you'll hit a compliance wall. Additionally, CBC Chapter 12 and California Code Title 20 require certain ductwork sealing and insulation standards: ducts in unconditioned spaces (attics, crawl spaces) must be insulated to R-8 minimum and sealed with mastic or foil tape—not duct tape, which degrades in 3-5 years. Inspectors will visually check these during final inspection.

Refrigerant handling rules are strict under California law and enforced by Campbell's Building Department. If your existing system contains R-22 (Freon), it must be recovered and disposed of by a licensed HVAC technician holding an EPA Section 608 certification (Type II or Universal). You cannot vent refrigerant to the air, and any installer must document recovery on the permit. Modern units use R-410A or R-454B, which are lower-GWP alternatives; the transition is ongoing, so be aware that R-410A units are phase-down targets and R-454B-compatible equipment is becoming standard. Campbell does not have a local refrigerant ban more restrictive than state law, but inspectors will ask to see recovery documentation if you're replacing an older unit. Some contractors bundle refrigerant recovery into the job cost; others charge $150–$300 extra. If you're pulling the permit yourself as an owner-builder, you'll need to hire a licensed HVAC contractor to perform the refrigerant recovery and sign the permit card during the final inspection—you can't do that work yourself even on your own home.

Seismic bracing for HVAC equipment is required in Campbell under 2019 CBC Chapter 13.3 and ASCE 7. If your air handler, furnace, or condensing unit is mounted on a roof, wall, or elevated surface, it must be bolted or strapped per code. Horizontal equipment (air handlers, furnaces in basements) needs longitudinal and transverse support; hanging ducts need support at least every 15 feet. Residential installations rarely trigger extensive bracing—a modern air handler in an attic just needs some flexible ductwork connectors and a couple of threaded rods—but if you're retrofitting a second-story condenser or a rooftop unit, inspectors will scrutinize the mounting. This is especially true in the Campbell foothills, which sit in moderate seismic zones (ASCE 7 maps show seismic design category C-D depending on specific location). Failure to brace properly can result in permit denial or a correction notice requiring the work to stop until bracing is installed and re-inspected. Typical bracing hardware (rods, straps, angle iron) costs $100–$300 per unit.

The inspection and approval sequence for HVAC permits in Campbell is straightforward but non-negotiable. After you've filed, the city may issue a same-day approval (for basic replacements) or schedule a plan-review meeting if ductwork or complex design is involved. Once approved, you can begin work. A rough-in inspection is typically not required for HVAC alone, but if your project includes new ductwork that ties into structural members or will be concealed (e.g., in new walls), the inspector may want to see it before drywall goes up. The final inspection is the critical gate: the inspector will check that equipment is installed per manufacturer specs, that ductwork is sealed and insulated, that refrigerant recovery is documented, that seismic bracing is in place, and that electrical connections are safe (though electrical sign-off may require a separate trades permit). The final inspection is typically done within 5-10 days of a callback; if you fail, you'll get a correction notice listing deficiencies, and you'll need to fix them and request a re-inspection (usually free, but repeat callbacks can frustrate the inspector). Once final inspection passes, the permit is closed and you receive a Certificate of Approval. Keep that certificate—it's proof the work was done to code and will protect you if you ever sell the house.

Three Campbell hvac scenarios

Title 24 energy code and SEER2 compliance in Campbell

California's Title 24 building energy efficiency standards are among the nation's most stringent, and Santa Clara County (where Campbell sits) has adopted the latest iteration (2022 update, effective January 2023). For HVAC, this means every air-conditioning unit—whether replacement or new—must meet minimum SEER2 ratings. SEER2 is the updated efficiency metric (replaces legacy SEER), and for Campbell's climate zones (3B-3C coast, 5B-6B foothills), the minimum is 13 SEER2 for split-system air conditioners and 10.5 HSPF2 for heat pumps. This is not a soft suggestion; Campbell's Building Department checks nameplate specs during plan review and will reject permits if the equipment is undersized or older-generation.

What this means for your project: if you're replacing an old 10 SEER unit, a modern 13-16 SEER2 replacement is standard and will sail through. But if you're tempted to source a 'stock' or off-lease unit from a surplus dealer, Campbell will flag it. Some contractors try to work around this by filing under 'like-for-like replacement' and claiming the old unit specs as the baseline—this occasionally works in less-strict Bay Area jurisdictions, but Campbell's inspectors are savvy to the trick and will ask to see the new unit's nameplate. Additionally, if you're installing a heat pump (increasingly common as California pushes electrification), you'll need to meet both cooling (13 SEER2) and heating (10.5 HSPF2) minimums. Your HVAC contractor will provide a Title 24 Compliance Certificate (HVAC-1 form or equivalent) as part of the permit package; this document lists the equipment model, efficiency ratings, and a statement that the installation complies. If you're pulling the permit yourself as an owner-builder, insist that your contractor provide this cert before you close the permit.

One more wrinkle: California is pushing variable-refrigerant-flow (VRF) and mini-split systems as high-efficiency alternatives, and some Santa Clara County homes are moving in that direction. If you install a mini-split, Campbell requires the same Title 24 documentation, plus additional ductless-system details (refrigerant line sizing, outdoor unit placement for noise/aesthetic reasons). The permit process is identical, but plan review may take a day or two longer because inspectors are still ramping up on variable-refrigerant systems. Total timeline impact is minimal, but be aware.

Campbell's online permit portal and in-person filing trade-offs

The City of Campbell Building Department operates an online permit portal (accessible via the city website, typically through a third-party e-permitting vendor like eGov or Accela). This portal allows you to upload documents, pay fees, and track status from home. For residential HVAC, the online portal is reliable and fairly quick—plan review typically takes 2-3 days, and you'll receive an approval email with your permit number and conditions. However, many Campbell contractors and owner-builders still prefer walking permits to City Hall in person, at 70 Berry Street, Campbell, CA 95008. Why? In-person filing allows you to hand-carry corrections, ask clarifying questions of the plan reviewer, and sometimes get same-day approval for simple replacements. Some inspectors will even pre-review your documents before you officially file, saving you a round-trip if something is incomplete.

Here's the practical trade-off: if your HVAC project is a straightforward like-for-like replacement with no ductwork changes, in-person filing often gets you an over-the-counter approval the same day or next day. Your contractor can walk in with the equipment specs and Title 24 cert, pay the fee ($150–$300), and walk out with an approved permit card. You can start work immediately. Using the online portal for the same job takes 2-5 days because you're waiting for a reviewer to open your upload, check it, and email back. If your project is complex (new ductwork, seismic bracing, multi-zone design), plan review takes longer regardless of filing method—probably 5-10 days—so the portal is fine. Campbell Building Department hours are typically Mon-Fri 8 AM to 5 PM; plan review staff work regular office hours, so don't expect evening or weekend responses. If you're using the online portal, upload early in the week to avoid Friday queues. If you're going in person, call ahead ((408) 866-2133 or check the city website for current numbers) to confirm hours, as COVID-era scheduling can still vary.

Owner-builders pulling permits online face one additional hurdle: if the system requires a licensed contractor's signature (e.g., for refrigerant recovery or electrical tie-in), you'll need to coordinate with that contractor to obtain their signature, often on a printed permit card. Some contractors will sign electronically via the portal; others want to see the original card. This can add 1-2 days to the timeline. If you go in person, you can hand-carry the permit card and get the contractor's signature on the spot, which is faster. For owner-builders, I'd recommend in-person filing unless you're very comfortable with digital workflows.

Common questions