Most permit problems in Monterey are not caused by the building code. They are caused by a review nobody knew was coming — a design review track triggered by the shape of the lot, a water district sign-off attached to a relocated sink, a window replacement assumed to be maintenance. The code is knowable. The sequence is what catches people.
RDD Solutions is a residential design and drafting firm in Carmel. We prepare permit-ready drawings for homeowners and general contractors across the Peninsula — we do not build, and we are not an architecture firm. What follows is how the City of Monterey process runs, in the order you meet it. For the service side, see our Monterey design and drafting page.
What Requires a Permit in Monterey
The city’s permit-required list covers more of a normal remodel than most homeowners expect: re-roofs and skylights, new electrical service or wiring, water heaters, new gas or water piping, heating and cooling systems, and patio covers, and awnings or tent structures over 120 square feet.
Exempt work includes detached one-story structures under 120 square feet, fences 6 feet or less, retaining walls under 3 feet that do not support a surcharge, platforms and walks not over 30 inches, and prefabricated pools of 5,000 gallons or less.
The exemptions are narrower than they sound. A retaining wall under 3 feet is exempt only if nothing loads the soil behind it, which on a sloped Monterey lot is often not the case. And then there is the most common surprise in the city:
Windows always require a permit in Monterey. Every replacement, with no like-for-like exemption. A window carries egress sizing, tempered glazing where the code calls for it, the weather barrier detail where the frame meets the wall, and energy certification. Homeowners regularly treat a whole-house swap as maintenance and find out partway through. If those windows are visible from outside, Planning wants to see them first.
Cabinet-and-finish-only work — repainting, floor covering, swapping cabinet doors — generally does not require a permit as a matter of typical practice. Move a wall, a fixture, a circuit or a window and you are in the permit system. The statewide picture sits in our guide to California building permit requirements.
Architectural Review: The Track Most People Do Not See Coming
The City of Monterey runs design review alongside building plan check, triggered by the conditions of your property rather than the ambition of your project. Any one of these puts you in architectural review: a lot under 5,000 square feet; a slope over 15%, measured on the site rather than eyeballed from the driveway; a new two-story residence; or a second-story addition.
Six neighborhoods in the city also carry architectural review on their own, independent of lot size or slope. If your address falls in one, review applies however modest the work is. Confirm your review area before design starts — it changes what gets drawn.
Story poles may be required — temporary frames erected on site so reviewers and neighbors can see a proposal’s height and mass against the sky rather than on paper. They take time to build and they invite comment. This bites hardest on home additions, where a second story puts you in review on its own.
Plan Check: How Long It Really Takes
Timelines researched in 2026 for the City of Monterey ran roughly 15 business days for projects valued under $100,000, about 20 business days for projects between $100,000 and $1 million, plus roughly 4 days of intake before the plan check clock starts.
Two things inside those numbers explain most of the frustration people report. Intake is separate: an incomplete package is handed back without ever entering the queue. And the figures describe one pass — corrections are normal and the clock runs again on resubmittal, so budget a second round and treat it as routine. Architectural review runs on its own schedule on top of these numbers, not inside them.
Water Credits: The Local Rule That Surprises Everyone
This rule is specific to the Peninsula, and it has stopped more kitchen and bathroom projects than any code provision. If your project adds or relocates plumbing fixtures, you need a waiver or permit from the Monterey Peninsula Water Management District, and the property must have sufficient water credits. Not a fee, and not a form at the end — a separate approval tied to the water history of the parcel itself.
The reason this hurts is timing. A homeowner designs a bathroom around a relocated shower and a second sink, then finds the parcel does not carry credits for the added fixture count — and it is the design that changes, not the paperwork. Ask this in week one. Two other items travel with the city’s kitchen and bath process: exterior changes such as windows, doors and siding need Planning approval first, and gas line alterations must be tested at 10 psi for 15 minutes.
The Code Edition Changed, and the Date That Matters Is Not Obvious
The 2025 California Building Standards Code took effect January 1, 2026, replacing the 2022 edition; the next cycle is 2028. The part worth internalizing: compliance is set by the date your permit application is filed, not by when construction starts or when the project was drawn. A set drawn to the previous edition and filed after the changeover is checked against the current one.
What About a Soils Report?
Given the region’s seismic setting, a geotechnical investigation is generally expected on Monterey County projects, though a building official can waive a full report in defined situations. Slopes of 3:1 or steeper require sign-off from a California Certified Engineering Geologist or registered geotechnical engineer. If your lot was steep enough to trigger review at 15%, raise this early. What triggers a soils report, and the permit mistakes that cost the most time.
Requirements and timelines described here were researched in September 2026 and are typical rather than guaranteed. Verify current requirements with the building department for your jurisdiction.
How the Drawing Side Works
- Consultation. What you want, what the lot and its review track allow.
- Existing conditions. We measure and draw the house as it stands. Why as-builts come first.
- Concept design. Layout against setbacks, lot coverage and height.
- Construction documents. The permit set, with structural and Title 24 coordination.
- Submittal. We prepare the package for intake and answer corrections.
Monterey Permit FAQs
Do I need a permit to replace windows in Monterey?
Yes. Windows always require a permit in the City of Monterey, including like-for-like replacements. The permit covers egress sizing, tempered glazing where required, the weather barrier detail and energy certification. If the windows are visible from outside, Planning approval is generally needed first.
What triggers architectural review in Monterey?
A lot under 5,000 square feet, a slope over 15%, a new two-story residence, or a second-story addition. Six neighborhoods also carry review independently of those conditions, and story poles are required for construction greater than one story, installed at least 10 days before a decision.
How long does plan check take in the City of Monterey?
Figures researched in 2026 ran roughly 15 business days under $100,000 and about 20 business days for $100,000 to $1 million, plus about 4 days of intake before the clock begins. Those describe a single pass — plan for one round of corrections, and add time where architectural review applies.
What are water credits and do I need them?
If your project adds or relocates plumbing fixtures, a waiver or permit from the Monterey Peninsula Water Management District is required and the property must have sufficient water credits. It is a separate approval tied to the parcel, and it can change what your design is allowed to include.
Do I need an architect to pull a permit in Monterey?
For most single-family work, no. California allows a building designer or drafting firm to prepare plans for typical residential projects, with a licensed structural engineer providing calculations where required. Where the line actually sits.
Start Your Monterey Project
Tell us the address and what you want to do, and we will tell you which review track your lot lands in and what the drawings need to carry. Get started with RDD Solutions.