How long does it take to get an HVAC permit for a fast food restaurant in California?

It depends on the jurisdiction. Sacramento County and most Sacramento-area cities: 3–6 weeks for mechanical plan check on a new QSR buildout. City of Los Angeles (LADBS): 6–14 weeks for full plan check on a new restaurant mechanical scope. Bay Area jurisdictions (SF DBI, Santa Clara, Alameda County): 4–10 weeks. Riverside and San Bernardino County: 3–5 weeks. The health department plan check runs concurrently and typically takes 2–4 weeks but must receive drawings at the same time as the building department - not after mechanical permit issuance. Most California QSR programs plan 10–16 weeks from permit submission to permit issuance for new construction.

What is the difference between a Type I and Type II hood in a California restaurant?

A Type I hood is required for cooking equipment that produces grease-laden vapors - fryers, open-flame charbroilers, griddles, woks, and rotisseries. Type I hoods require 16-gauge welded grease duct, a UL 300-listed fire suppression system, and makeup air. A Type II hood is used over heat-producing, non-grease equipment - steamers, dishwashers, ovens producing only heat and moisture. Type II hoods can use lighter-gauge duct with sealed joints and do not require UL 300 suppression. The critical selection error is assuming an oven is Type II scope - many combi ovens and certain rotisseries trigger Type I requirements based on the fat content of what they cook. Review equipment schedules carefully.

Does a California QSR restaurant need separate mechanical and health department permits?

Yes. Every California QSR buildout involving a commercial kitchen requires two parallel permit tracks: a building department mechanical permit (for HVAC, hood, grease duct, makeup air, and Title 24 compliance) and a county environmental health department permit (for kitchen layout, hood capture velocity, hand-wash facilities, and CalCode compliance). Both review the hood and exhaust drawings independently. Both must issue final sign-off before the Certificate of Occupancy. Running these tracks sequentially instead of in parallel adds 4–8 weeks to the schedule - submit to both departments simultaneously.

What Title 24 documents are required for a new QSR restaurant in California?

For new QSR construction, Title 24 compliance documentation includes: NRCC-MCH (Certificate of Compliance - Mechanical) documenting HVAC equipment efficiency, economizer compliance, ventilation rates per ASHRAE 62.1, and any demand-controlled kitchen ventilation (DCKV) provisions. CF-1R-MCH (Installation Certificate) completed by the installing contractor at rough-in. CF-2R-MCH (Acceptance Test Certificate) completed by a certified ATT after installation. The Title 24 package is typically prepared by the mechanical engineer of record or a Title 24 energy consultant, and the mechanical contractor is responsible for the installation and acceptance test certifications.

Kitchen Ventilation · QSR · Published 2026-06-03

QSR and fast food restaurant HVAC in California: the franchise buildout guide from permit to certificate of occupancy

California QSR buildout timelines hinge on the mechanical permit more than any other trade. The dual permit track - building department and county health department running concurrently - catches most out-of-state franchise GCs off-guard. Here's the complete mechanical scope, the permit timeline by county, and the coordination sequence that keeps California QSR projects on schedule.

Commercial restaurant kitchen showing QSR HVAC and ventilation system — Commercial kitchen ventilation in a California QSR. Sierra Mechanical has performed mechanical scope on California franchise buildouts for Burger King, Habit Burger, Wendy's, KFC, Dutch Bros, Popeyes, Wingstop, and Jack in the Box.

The mechanical scope on a California QSR buildout

Most national QSR franchise mechanical scopes include four interconnected systems. Understanding how they interact - and how California's code governs each - is the prerequisite for building a realistic permit and construction timeline.

1. Kitchen exhaust hood and grease duct system

The Type I hood over the cook line is the permit-critical item. It drives the building department plan check (mechanical drawings) and the county health department review simultaneously. California enforces NFPA 96 through both the California Mechanical Code and CalCode - the health department looks at hood capture velocity, exhaust CFM, and hand-wash sink proximity; the building department reviews duct construction, fire suppression integration, and structural support.

Hood selection is driven by the equipment schedule. Type I is required over any equipment producing grease-laden vapors. Type II is permitted only over heat-producing, non-grease equipment. The common selection error on QSR projects: assuming that combination ovens or certain chain-driven rotisseries are Type II scope. Review the franchisor's equipment schedule against the CMC and NFPA 96 criteria before finalizing hood selection - not after permit submission.

Grease duct construction is 16-gauge carbon steel, continuously welded liquid-tight per NFPA 96 §7. This is not a field-improvised fabrication item - it requires a C-43 shop with TIG welding capability for stainless applications, or carbon steel welding for standard grease duct. Sierra Mechanical's in-house C-43 shop fabricates welded grease duct to NFPA 96 spec for all California QSR projects. For the complete grease duct construction requirements, see our guide on NFPA 96 grease duct requirements for California commercial kitchens.

2. Makeup air unit (MAU)

California Mechanical Code Section 508 requires that kitchen exhaust over 400 CFM be balanced with tempered makeup air - minimum 80% of exhaust CFM, with the remainder from transfer air from the dining area. For a typical QSR exhaust system running 2,000–4,000 CFM, the MAU is a significant piece of rooftop equipment with its own Title 24 requirements (heating efficiency for tempered air, economizer consideration).

MAU commissioning is where California QSR projects most commonly fall short. See our analysis of why restaurant HVAC systems fail in California summers - approximately 50% of QSR makeup air units are performing below design specification, primarily due to improper commissioning at installation. Balance the ventilation system at turnover, document the measured exhaust and supply volumes, and include this in the closeout package.

3. Rooftop HVAC for dining and back-of-house

The dining area HVAC is typically a packaged rooftop unit on a standard commercial lease. Under California's 2026 Title 24 code, new installations must meet the prescriptive heat pump requirement for most unit sizes. See our guide on California's commercial RTU heat pump rule for equipment selection criteria.

Back-of-house kitchen cooling is a specific design challenge in California QSRs. The kitchen heat load from cooking equipment, plus the makeup air heat infiltration when the ventilation system is imbalanced, creates cooling requirements that significantly exceed what a standard comfort cooling calculation would produce. Size the kitchen cooling system based on the worst-case summer condition - Sacramento kitchen ambient temperatures can exceed 100°F without adequate makeup air and cooling.

4. Fire suppression system

UL 300-listed fire suppression under the Type I hood is required by NFPA 96 and the California Fire Code. This is C-16 (fire protection) scope - not C-20 mechanical scope. The mechanical contractor coordinates the hood framing, suppression nozzle placement, and gas valve interlock; the licensed fire protection contractor installs and certifies the suppression system. The building department mechanical permit and the fire department suppression permit close simultaneously at final - sequence the inspections accordingly.

California permit timeline by county

Jurisdiction	Building dept plan check	Health dept plan check	Notes
Sacramento County	3–5 weeks	2–4 weeks	Most cities accept OTC for standard QSR prototype
City of Los Angeles (LADBS)	8–14 weeks	3–5 weeks	Full plan check required; DPS routing adds time
LA County (unincorporated)	4–8 weeks	3–5 weeks	SCAQMD permit for combustion equipment; add 2 weeks
Bay Area (varies)	4–10 weeks	3–4 weeks	BAAQMD permit required; SF DBI longest review
Riverside / San Bernardino	3–5 weeks	2–3 weeks	Faster review; SCAQMD applies to SBC portion
San Diego	4–7 weeks	3–4 weeks	SDCDEH for health; SDAPCD for combustion equipment

Timelines are for new QSR construction on existing commercial pads. Shell TI projects may qualify for OTC permits in some jurisdictions. Submittal completeness significantly affects review time - incomplete packages restart the clock.

The dual-permit coordination sequence that California GCs miss

The single most common California QSR schedule failure: submitting to the building department first, waiting for approval, then submitting to the county environmental health department. This sequential approach adds 4–8 weeks to the schedule. The correct approach is parallel submission:

Prepare a single coordinated drawing package - mechanical drawings that satisfy both the building department (duct construction, equipment schedules, Title 24) and the health department (hood capture velocity, exhaust volumes, hand-wash sink locations, finish materials).
Submit to both departments simultaneously - the same drawing package, potentially with a health department cover sheet covering CalCode-specific items.
Track both correction cycles independently - building department corrections and health department corrections often do not overlap. Respond to each on its own timeline.
Coordinate final inspections - the building department rough-in inspection (before duct is covered) and the health department pre-opening inspection must both happen before the Certificate of Occupancy. Stage inspections so the mechanical contractor is available for both.

Title 24 compliance documentation for new QSR construction

A new California QSR buildout requires the following Title 24 documentation from the mechanical contractor:

NRCC-MCH: Documents HVAC equipment efficiency, heat pump compliance for new RTU installations, economizer requirement (if over the threshold), ventilation rate compliance per ASHRAE 62.1, and demand-controlled kitchen ventilation (DCKV) compliance if the exhaust system qualifies.
CF-1R-MCH: Installation Certificate completed by the mechanical contractor after rough-in and before cover. Documents that installed equipment matches the NRCC-MCH specifications.
CF-2R-MCH: Acceptance Test Certificate completed by a certified ATT after installation. The building department requires this before final permit sign-off.

For California QSR franchise programs running multiple units per year, maintaining a library of NRCC-MCH templates for each prototype (different cooking equipment configurations trigger different HVAC compliance pathways) significantly reduces per-project documentation time. Sierra Mechanical has prepared Title 24 compliance documentation packages for California franchise programs including Burger King, Habit Burger, Wendy's, KFC, Dutch Bros, Popeyes, Wingstop, and Jack in the Box.

Working with Sierra Mechanical on QSR franchise buildouts

Sierra Mechanical has been the mechanical subcontractor of record on California QSR and fast-casual franchise buildouts since 1996. Our in-house C-43 shop fabricates welded grease duct and custom hoods to NFPA 96 spec. Our C-20 crews install makeup air units, rooftop HVAC, and kitchen exhaust systems statewide. We carry standing experience in Sacramento County, LA County, Bay Area, San Diego, and Riverside/San Bernardino permit offices and health departments - meaning the first submittal package goes in correct.

For general contractors running California franchise programs, Sierra can provide a single-trade mechanical subcontract covering the complete kitchen ventilation and HVAC scope - hood, grease duct, MAU, rooftop units, fire suppression coordination, and Title 24 documentation. For multi-unit programs, we coordinate statewide scheduling through a single PM contact.

Request a bid at sierramechcorp.com/contact or call (916) 638-8605. Budgetary pricing in 4 business hours.

Code references: NFPA 96 (2024 edition); California Mechanical Code (2022) §§508, 511; California Retail Food Code (CalCode); Title 24 Part 6 (2025 edition). Permit timeline data from project experience across California jurisdictions, current as of June 2026.

This article is general guidance based on California field experience. Permit timelines are estimates and vary by jurisdiction workload. Always confirm current review timelines directly with the AHJ at project start.