By Mikhail Strelkin, Owner, QualiBuild LLC. Licensed, bonded, and insured California General Contractor, CSLB Lic. #1142411. Updated September 2026.
Yes, in most cases. The City of Sunnyvale requires a building permit for kitchen remodels and for bathroom remodels. The exemptions are narrow and specific.
For a kitchen remodel, the City's kitchen handout exempts only two things: replacing the countertop alone, or refacing the existing cabinets alone (new doors and drawer fronts on the same cabinet boxes), in both cases with no electrical work. For a bathroom, the bathroom handout exempts replacing a sink or toilet in the same location. Painting, wallpaper, cosmetic tile, flooring, and trim are cosmetic work and do not need a building permit either.
Common permit triggers include replacing kitchen cabinets, replacing or remodeling a tub or shower, moving plumbing fixtures, and adding or relocating electrical work. When a permit is required, it must be issued before the work begins.
This guide is based on the City's three current handouts: Residential Kitchen Remodel (Rev. 3/2026) and Residential Bathroom Remodel (Rev. 1/2026), which apply to permits submitted on or after January 1, 2026, and Work Not Requiring a Building Permit (Rev. 1/2026), applicable as of the same date. Links are at the end. The City notes that its exemption list is not all-inclusive, so if your project is unusual, call the Building Division at 408-730-7444 before you start.
Sunnyvale Remodel Permit: Quick Check
| Work | Permit? |
|---|---|
| Painting, wallpaper, cosmetic tile, flooring, trim | No |
| Kitchen countertop only, no electrical changes | No |
| Refacing existing kitchen cabinets only, no electrical changes | No |
| Replacing kitchen cabinets | Yes |
| Replacing one sink, faucet, or toilet in the same location | No |
| Replacing two or more plumbing fixtures, or one fixture plus electrical or other trade work | Yes, the City treats it as a full bathroom remodel |
| Replacing or remodeling a tub or shower | Yes |
| Moving a sink, toilet, tub, or shower | Yes |
| Adding or moving outlets, circuits, or electrical boxes | Yes |
| Replacing a switch, outlet, or light fixture in the same box, same type | No |
| Installing a bathroom exhaust fan | Yes |
| Removing or relocating a wall | Yes |
| Retrofit window replacement, same configuration, existing frame stays | No building permit |
| Changing the window size, opening, or frame | Yes |
Two clarifications homeowners often get wrong.
Stacking cosmetic items does not create a permit requirement. New paint, new flooring, and new trim in the same room are still cosmetic work. What matters is whether the scope touches work regulated by the building, electrical, plumbing, or mechanical codes.
In a bathroom, stacking fixtures does. Sunnyvale's handout states that a full bathroom remodel is triggered when two or more plumbing fixtures or other trades are updated. A new toilet alone is exempt. A new toilet plus a new vanity and sink is a permitted remodel.
Kitchen Remodel Permits in Sunnyvale
Sunnyvale's kitchen handout is direct: a permit is required for kitchen remodels and must be obtained before the remodel begins. The only exceptions are countertop-only replacement and refacing existing cabinets, both without electrical work. The City's Permits A-Z page says the same thing in one line: a permit is required for kitchen remodels that include replacement of kitchen cabinets.
That means a typical cabinet replacement is a permitted kitchen remodel even if the sink and appliances stay where they are.
The Electrical Requirements Can Change the Project
Electrical is the reason we look at the existing panel during the site visit, before the scope and price are final.
Sunnyvale requires GFCI protection for all countertop receptacles, receptacles within 6 feet of the sink (including below the counter and behind appliances), and receptacles supplying dishwashers. The GFCI reset button must be accessible, not behind an appliance. All outlets and devices in the kitchen, including lighting and the hood, must be AFCI-protected, and receptacles must be tamper-resistant.
Backsplash receptacles need at least two 20-amp circuits. A cord-and-plug range hood needs its own dedicated circuit. The disposal, dishwasher, and built-in microwave may each need a separate circuit, depending on the manufacturer's requirements and motor rating.
Placement is specific. Every countertop or backsplash section at least 12 inches wide needs a receptacle, no point along the backsplash may be more than 24 inches from one, and backsplash receptacles sit no more than 20 inches above the counter. Island and peninsula receptacles cannot go below the countertop or on the side of the cabinet under the current code. They must be on or above the work surface, or in a listed countertop or work-surface receptacle assembly. If you skip the island receptacle, provisions must still be made so one can be added later.
Electric ranges and ovens need a 40- or 50-amp circuit. Gas ranges and ovens must also have a 240-volt circuit and reserved breaker space in the panel or subpanel for future electrification. This applies even if you are keeping a gas range.
The City's own warning is the important part: the existing electrical panel may need to be upgraded, or a subpanel added, if it cannot accommodate these circuits. In an older Sunnyvale house with a 100-amp panel that is already full, this is one of the most common surprises in a kitchen budget. We would rather find it at the site visit than after demolition.
Lighting Rules Most Homeowners Have Not Heard Of
All installed kitchen lighting must be high-efficacy, except integral device lighting such as the light in the range hood or inside cabinets. Sunnyvale also requires readily accessible wall-mounted dimming controls in the kitchen. Under-cabinet lighting must be on its own switch, separate from other lighting. Recessed lights must be airtight, sealed to the ceiling, and cannot use screw-base sockets. These are small items, but they decide which fixtures you can buy.
Sprinklers, Shared Walls, and Eichlers
If your home has fire sprinklers, a separate Fire Permit is required, and a fire inspection must be passed before the building rough inspection and again before final. If a cabinet run sits against a fire-rated wall shared with a townhouse neighbor or an attached ADU, the fire rating of that wall must be maintained.
If the scope grows beyond a kitchen remodel, for example taking the interior down to the studs, Sunnyvale requires bedroom windows to be brought up to current emergency escape requirements. The kitchen handout specifically asks owners of Eichler homes to discuss window requirements with City staff. Sunnyvale has several Eichler neighborhoods, so this comes up.
For the construction side of the project, see our kitchen remodeling page.
Bathroom Remodel Permits in Sunnyvale
Sunnyvale's bathroom handout says a permit is required for bathroom remodels. Its bathroom-specific exemption covers replacing a sink or toilet in the same location, or a sink in the same vanity. A full bathroom remodel is triggered when two or more plumbing fixtures or other trades are updated. The City's Permits A-Z page calls this a Tub and Shower Permit and applies it to any bathroom remodel that replaces the tub or shower, or installs or relocates additional plumbing fixtures or cabinets.
The City's own examples of work that needs a permit: remodeling or replacing the tub or shower, replacing the vanity and sink, moving outlets or any electrical work, moving a toilet, installing an exhaust fan, and installing or changing a window.
Ventilation: A Window Is Not Enough
In a permitted bathroom remodel, Sunnyvale requires an Energy Star exhaust fan ducted to the outside, rated for at least 50 CFM intermittent or 20 CFM continuous, even if the bathroom has an operable window. Unless the fan is part of a whole-house ventilation system, it must be controlled by a manual or automatic humidity control adjustable between under 50% and 80%. A plain on-off switch alone does not meet this requirement.
Electrical and Lighting
The bathroom needs a dedicated 20-amp circuit. All receptacles must be GFCI-protected and tamper-resistant, with at least one receptacle within 3 feet of the sink edge and no more than 12 inches below the counter. No receptacles inside or directly over the tub or shower. Light fixtures within 3 feet horizontally and 8 feet vertically of the tub rim or shower threshold must be rated for damp locations, or for wet locations where they will get spray. At least one light must be on an occupancy or vacancy sensor switch that turns it off automatically.
Shower Size, Curbs, and Waterproofing
A new or reconfigured shower must have at least 1,024 square inches of finished interior area and fit a 30-inch circle. Shower doors must swing out and give a clear opening of at least 22 inches. The shower valve must be a pressure-balancing type set to a maximum of 120°F.
Shower and tub walls need a non-absorbent finish at least 6 feet above the floor. Behind the tile, Sunnyvale allows glass-mat gypsum, fiber-reinforced gypsum, or fiber-cement backer. Regular drywall is not an approved backer in the wet area. Water-resistant "purple board" is allowed only with building paper and wire lath over it, and never over a vapor retarder in a shower.
The shower floor needs an approved shower pan or an on-site built watertight lining such as hot mop. An on-site built lining must extend at least 3 inches up the wall and slope 1/4 inch per foot to the weep holes. A curb is required, at least 1 inch above the shower floor and 2 to 9 inches above the top of the drain. The finished shower floor slopes toward the drain between 1/8 and 1/2 inch per foot.
The pan and the underlayment are inspected before tile goes on. This is why a shower should never be tiled before the inspector has seen the waterproofing.
Curbless Showers Take More Planning
Sunnyvale has specific rules for curbless showers. If the subfloor framing is altered in any way, framing plans and floor plans are required. A linear drain is required at the shower entrance in addition to the primary drain, and both drains must be individually trapped and vented. The City treats the entire bathroom as a wet location: the waterproof membrane must extend from under the shower across the whole bathroom floor. The shower floor slope is a minimum of 1/4 inch and a maximum of 1/2 inch per foot.
A curbless shower is a real option, but it is a different project from simply leaving out the curb.
Layout Rules That Decide What Fits
The toilet needs 30 inches of clear width (15 inches from center to each side) and 24 inches clear in front. Any glass within 60 inches of a tub or shower and less than 60 inches above the floor must be tempered and permanently marked, which affects a window next to the tub. A shower, or a tub with a showerhead, needs at least 6 feet 8 inches of ceiling height over a 30 by 30 inch area at the showerhead.
For the construction process and the bathrooms we build, see our bathroom remodeling page.
A Permit Can Reach Fixtures Outside the Room
This surprises many homeowners.
Whenever a Sunnyvale building permit is issued for an addition, alteration, or improvement, all existing non-compliant plumbing fixtures throughout the house must be replaced with water-conserving fixtures. Non-compliant means a toilet above 1.6 gallons per flush, a showerhead above 2.5 gallons per minute, or a faucet above 2.2 gallons per minute. Replacements must meet the current limits: 1.28 gallons per flush for toilets, 1.8 gallons per minute for showerheads, 1.2 for bathroom faucets, and 1.8 for kitchen faucets.
This is not only a Sunnyvale rule. California Civil Code §1101.4 requires the same replacement as a condition of final permit approval for any alteration or improvement to a single-family home.
So an older toilet in the hall bathroom that uses more than 1.6 gallons per flush can become part of closing out your kitchen permit. We check the other fixtures in the house at the site visit so this is in the scope, not a surprise at final.
Smoke and Carbon Monoxide Alarms
Both handouts include smoke and carbon monoxide alarm requirements, and they apply to the whole house, not only the room being remodeled.
Smoke alarms are required in every bedroom, in the hallway outside bedrooms, on each story, and in any basement. Any alarm more than 10 years past its manufacture date, or with no date on it, must be replaced. New alarms must have a sealed 10-year battery.
Carbon monoxide alarms are required outside bedroom areas and on each occupiable story if the house has any fuel-burning appliance, a fireplace, or an attached garage.
Take Photos Before Demolition
For a kitchen, Sunnyvale requires photos of all four existing walls before construction, available at the first inspection. For a bathroom, the City asks for photos showing the entire existing configuration.
We photograph the existing conditions before demolition on every permitted project. It is also the record that protects you if there is ever a question about what was there before.
How the Sunnyvale Permit Process Works
1. Define the scope before anyone touches a wall. Decide whether the work is cosmetic or a permitted remodel. Identify structural, electrical, plumbing, mechanical, and fire-sprinkler work up front, because added scope has to go back to the Building Department for review.
2. Prepare the permit documents. Sunnyvale requires a completed Building and Fire Permit Application and a floor plan. For a kitchen, the plan shows existing and proposed walls, identifies any load-bearing wall being removed or relocated (additional plans may be required in that case), labels the adjoining rooms, and shows the size and location of existing windows and whether they will be replaced. For a bathroom, the plan shows existing and proposed conditions and any affected walls, plus an approval letter from the HOA where one applies.
3. Submit through E-OneStop. All Sunnyvale permits go through the E-OneStop Online Services system: applications, plan uploads, City comments and your responses, payments, and inspection scheduling. After the plans are uploaded, you can request an over-the-counter plan check appointment by email to pcappointment@sunnyvale.ca.gov. The Permit Center takes these appointments in the morning. The counter is on the 2nd floor of City Hall, 456 W. Olive Ave., open weekdays 8 a.m. to noon and 1 to 5 p.m., 408-730-7444.
4. Pass the inspections before work is covered. For a kitchen: photos at the first inspection, a rough electrical inspection after the boxes are installed and before devices are connected, rough inspections for any structural, plumbing, or mechanical work (including plumbing top-out), fire inspections where sprinklers exist, then final. For a bathroom: rough plumbing and electrical for the valve and wiring before any wallboard, then underlayment and the shower pan test, then final. Sunnyvale states plainly that the number of bathroom inspections depends on the underlayment system and the scope, and that it will tell you about additional inspections when the permit is issued. Building inspections are scheduled online or at 408-730-7790.
5. Pass the final inspection and close the permit. The final inspection is required after all work is complete. The City's Inspections page states that the general contractor is responsible for scheduling and being present for all inspections.
How Long Does a Sunnyvale Permit Take?
There is no single honest number.
Sunnyvale's handouts point kitchen and bathroom remodels to an over-the-counter plan check appointment once the plans are uploaded, and the Permit Center tells first-time applicants to call so staff can explain whether the project needs plan review. The route and the time depend on the scope, on whether walls or sprinklers are involved, and on the City's workload that month.
We do not build a construction schedule around a permit date the City has not confirmed, and we do not start permitted work before the permit is issued.
Neighboring Cities: The Short Version
Each city publishes its own rules. Two neighbors we work in often, checked in September 2026:
Mountain View follows the same logic as Sunnyvale: a permit is required for a kitchen remodel that replaces the cabinets, and not for countertops or refacing alone. The City requires an 11 x 17 plan with existing and proposed layouts plus electrical load calculations, and it publishes typical permit times: 5 business days for a like-for-like replacement and 2 to 3 months for a renovation that removes walls.
Palo Alto offers a Kitchen/Bath Remodel Instant Permit, issued without plan review, but only to a licensed contractor and only when the work stays within the existing kitchen or bathroom footprint, with no changes to walls, windows, doors, or structure, no panel or subpanel upgrade, and no additions to the fixture count or equipment. Inspections are still required.
We will cover each city in its own guide. Rules change with each code cycle, so the date on the guide matters.
Why the Permit Matters When You Sell
California's statutory Real Estate Transfer Disclosure Statement asks whether the seller is aware of "room additions, structural modifications, or other alterations or repairs made without necessary permits," and separately whether any such work is not in compliance with building codes.
There is also a newer rule. For sales where the offer is accepted on or after July 1, 2024, and the seller has owned the home for 18 months or less, Civil Code §1102.6h requires the seller to disclose contractor work done during that period and to give the buyer copies of the permits the seller obtained.
A permit that was pulled, inspected, and closed leaves a clean record of what was built and who inspected it. An unpermitted kitchen does not disappear when you sell. It becomes a disclosure.
How QualiBuild Handles Sunnyvale Permits
QualiBuild is a family-owned company based in Sunnyvale, and you deal directly with the owners. For kitchen and bathroom remodels that require a permit, the permit is part of the project, not an extra you have to manage.
At the site visit we confirm the scope against the City's rules, look at the electrical panel, and check the other plumbing fixtures in the house. We prepare the floor plan and the application, submit through E-OneStop, respond to the City's comments, and photograph the existing conditions before demolition. We schedule and attend every inspection and take the permit through final sign-off. Permit fees are paid to the City and are separate from our price.
The goal is simple: find the code and permit requirements before they turn into change orders.
Frequently Asked Questions
Can I replace my kitchen cabinets in Sunnyvale without a permit?
No. Sunnyvale's Permits A-Z page states that a permit is required for kitchen remodels that include replacement of kitchen cabinets. The kitchen handout exempts only countertop-only replacement and refacing the existing cabinets, both without electrical work. The City's general exemption list mentions cabinets mounted below 5 feet 9 inches as cosmetic work, but the two kitchen-specific sources are explicit, and we pull the permit.
My bathroom has a window. Do I still need an exhaust fan?
Yes. Sunnyvale requires a ducted exhaust fan with humidity control in every bathroom, even with an operable window.
Do I need a permit to remove the wall between the kitchen and living room?
Yes. The permit plan must show existing and proposed walls and identify any load-bearing wall being removed. A load-bearing wall may require additional structural plans and calculations.
Can I replace a toilet and a sink at the same time without a permit?
Not together. One fixture replaced in the same location is exempt. Two or more plumbing fixtures, or a fixture plus electrical work, is a full bathroom remodel under Sunnyvale's handout and needs a permit.
How many inspections does a kitchen or bathroom remodel need?
It depends on the trades involved, the shower system, structural work, and whether the home has fire sprinklers. Sunnyvale publishes the minimum inspection stages, not a fixed number of visits. Plan on a rough inspection before anything is covered, a pan or underlayment inspection for showers, and a final.
Who handles the permit on a QualiBuild project?
We do. For permitted projects, QualiBuild prepares and submits the permit package, responds to the City, and manages inspections through final sign-off.
How long does a Sunnyvale remodel permit take?
It depends on the scope and the City's workload. Kitchen and bathroom remodels can request an over-the-counter plan check appointment after the plans are uploaded. We confirm the review path for each project instead of promising an approval date.
Planning a Kitchen or Bathroom Remodel in Sunnyvale?
From a detailed video with dimensions, we'll give you a real price, not a ballpark. At the site visit we confirm the scope, including the electrical panel and the permit requirements, and if the scope matches, the price holds.
See our kitchen remodeling and bathroom remodeling pages, or request a free estimate.
Official Sources
City of Sunnyvale, Residential Kitchen Remodel, Rev. 3/2026 (PDF)
City of Sunnyvale, Residential Bathroom Remodel, Rev. 1/2026 (PDF)
City of Sunnyvale, Work Not Requiring a Building Permit, Rev. 1/2026 (PDF)
City of Sunnyvale, Permits A-Z, Permit Center, and Inspections
City of Mountain View, Kitchen Remodel for Single-Family Homes and Duplexes