The California Building Permit Process: What Actually Happens Between "Yes" and "Permit"

You signed the agreement. You are excited. You assume drawings show up in a few weeks, the city stamps them, and you start building.

Then two months pass and you are still answering questions about your property line. That gap between hiring an architect and holding a permit is where most owners get frustrated, and almost always it is because nobody explained what happens inside it.

Here is the honest version, from someone who does the design work, holds the accessibility certification, and holds a contractor's license.

Nothing Gets Drawn Until We Know What You Are Allowed to Build

Before a single wall goes on paper, we confirm what your site and building will actually permit.

• Zoning and use. Is your use allowed by right, or does it need a conditional use permit or variance? That answer can add months, because discretionary approvals go through a public process that a building permit does not.
• Existing conditions. For remodels and tenant improvements, we verify what is actually there against what is on record. Unpermitted work discovered later is a schedule killer.
• Occupancy and code path. Occupancy classification, construction type, allowable area, and exiting drive the whole design. Getting these wrong early is expensive to correct late.
• Accessibility triggers. In California, alterations to existing buildings pull in path of travel obligations that often sit outside the area you meant to touch. As a Certified Access Specialist, I flag those in week one rather than letting plan check find them.

This phase feels slow because there is little to look at. It is also what prevents the redesign nobody budgeted for.

Design Happens in Layers, Not All at Once

Schematic design establishes the plan concept, the overall size, and the relationships between spaces. This is where your input matters most and where changes are cheapest.

Design development is where the building becomes real. Structural, mechanical, electrical, plumbing, and energy consultants get involved, and coordination takes calendar time even when everyone is working.

Construction documents are the permit set. Dimensions, details, schedules, specifications, structural calculations, and Title 24 energy compliance documentation. This is the largest single block of time in most projects, and the set your contractor prices and builds from.

A change requested during construction documents costs more than the same change in schematic design, because it ripples through every consultant's drawings.

Submittal and Plan Check Is a Conversation, Not a Vending Machine

Once the set is submitted, building, planning, fire, public works, and sometimes health or a school district each review different things, often on different schedules.

You will get correction comments. Every project does. A first review that comes back with comments is normal, not a sign that something went wrong. What those comments can cost you is a separate conversation.

What matters is how they are handled. A response that answers the reviewer's actual concern, with a clear narrative of what changed and where, clears resubmittal faster than a set that quietly makes edits and hopes.

Each resubmittal restarts a review cycle. That is the mechanism behind the long timelines owners hear about, and why the quality of the first submittal matters more than almost anything else.

What the Law Actually Guarantees You

California does put clocks on public agencies, and it helps to know which clock applies to you.

Discretionary projects. Under the Permit Streamlining Act, an agency generally has 30 days from submittal to determine in writing whether your application is complete, and each resubmittal starts a new 30 day period (Gov. Code section 65943). After the environmental determination, the agency generally has 60 days to approve or deny a project that is exempt from CEQA or covered by a negative declaration, and 180 days after certification of an environmental impact report (Gov. Code section 65950). A deemed approval provision exists if an agency misses the deadline, but it only operates when the required public notice has occurred, so it is not a shortcut to plan around.

Housing projects after entitlement. Where at least two thirds of the square footage is residential, Government Code section 65913.3 sets deadlines on building and other post-entitlement permits. The agency has 15 days to determine completeness, then generally 30 business days for 25 units or fewer and 60 business days for 26 units or more to approve the permit or return a comprehensive set of comments.

Ordinary commercial building permits. These are ministerial and are not covered by the Permit Streamlining Act's decision deadlines. Turnaround varies widely by jurisdiction and workload. Ask for current published review times before you commit to an opening date.

These are the rules as of September 2026. Procedures, fees, and submittal requirements vary by jurisdiction, and the legislature amends this area of law nearly every year.

Two Recent Changes That Affect Your Schedule

The code cycle turned over. The 2025 California Building Standards Code took effect January 1, 2026. Applications submitted on or after that date are reviewed under the 2025 edition. If you are working from an older feasibility study or drawing set, assume some of it needs revisiting.

Local residential standards are frozen. Under AB 130, signed in June 2025, cities and counties are barred from modifying applicable building standards for residential projects between October 1, 2025 and June 1, 2031, with carve outs including emergency, fire safety, and health and safety measures. AB 130 also created a statutory CEQA exemption for qualifying infill housing on urban sites of 20 acres or less, which can remove an entire review track.

Where Projects Actually Lose Time

The schedule rarely dies at the counter. It dies in a handful of predictable places.

• Late scope changes. A decision reversed after construction documents begin costs weeks across multiple consultants.
• Unverified existing conditions. Assumptions that turn out to be wrong force redesign after submittal.
• Accessibility caught late. Path of travel and restroom compliance found in plan check instead of in design.
• Slow owner responses. A week of silence on a reviewer's question is a week of schedule.
• Incomplete first submittals. Submitting early to "get in line" usually costs more time than it saves.

Frequently Asked Questions

How long does it take to get a building permit in California?

It depends on project type, jurisdiction, and whether discretionary approval is required. A tenant improvement moves on a very different schedule than new construction requiring a conditional use permit and environmental review. Ask your jurisdiction for current published plan check turnaround, ask your architect for a document schedule, then add both together.

Why did my plans come back with corrections? Did my architect make a mistake?

Not necessarily. Correction comments are a normal part of plan review. Reviewers interpret code, ask for clarification, and catch coordination items. The measure of a good set is how few cycles it takes to clear, not whether comments appear.

Do I need a permit for interior work only?

Very often yes. Work affecting structure, egress, plumbing, mechanical, electrical, fire protection, or accessibility generally requires a permit even when nothing changes outside. Check with your building department before starting.

Can I start construction while the permit is in review?

No. Building without a permit exposes you to stop work orders, penalties, and problems at sale, refinance, or insurance renewal. It usually costs more to correct than it ever saved.

What is a deferred submittal and does it slow me down?

It is a portion of the design, often items like trusses, fire sprinklers, or storefront systems, that is submitted for review after the main permit is issued. Used deliberately it keeps the project moving. Used carelessly it creates a second review in the middle of construction.

What can I do to speed this up?

Answer questions quickly, freeze scope before construction documents begin, and pay for accurate existing conditions information up front.

Working With Us

We design projects to survive plan check, because we have been on both sides of the process. Avila Architects, Inc. is led by Arturo "Art" Avila, AIA, Certified Access Specialist (CASp #1063), LEED AP BD+C, and a California licensed general contractor, with partner Fred Avila. We provide architectural design, CASp consulting, LEED and sustainability, permit services, and construction administration statewide.

If you are building a realistic schedule, we would rather have that conversation before the drawings start. Visit www.avilaarchitectsinc.com or reach us at art@avilaarchitectsinc.com.

This article is professional information from licensed design and accessibility professionals, current as of September 2026. It is not legal advice. Requirements vary by jurisdiction and California law in this area changes frequently. Consult your building department and, where legal rights are at stake, an attorney.

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