Foster City Building Department 2026: Permits, Inspections & Services

Foster City Building Permits, Inspections & Permit Help

If you are remodeling a kitchen, adding living space, replacing a roof, upgrading an electrical panel, installing HVAC, building an ADU, opening a commercial space or starting new construction, the important part is not simply finding a permit form. You need to know which approval comes first, what documents to prepare, when to pay, how the plan review works and when inspections are required.

What Type of Foster City Permit or Approval Do You Need?

Building Division is only one part of the approval process. A project can require Planning, Public Works, Fire or another review in addition to the building permit.

Exterior alterations can also need Planning approval. For commercial projects, a change in use or occupancy can trigger additional reviews even when the amount of physical construction looks small.

Before Applying: Four Checks That Can Prevent Delays

1. Confirm the property is actually inside Foster City

Do not rely only on the postal city shown in an address. Use the City’s official Maps and Data tools to review city limits, parcels and zoning information.

If the property is in another jurisdiction, use that jurisdiction’s permit office instead. Nearby owners may also find our Atherton Building Department guide or Daly City Building Department guide useful.

2. Check Planning approval before finalizing plans

Planning approval can be required before Building Division review for exterior alterations, additions, new structures, commercial changes, signs and other projects. Planning Division can be reached at 650-286-3225 or planning@fostercity.org.

3. Check HOA requirements

Foster City has many properties within homeowner associations. The City’s over-the-counter permit guidance specifically notes that an HOA approval letter may be required when the property is within an HOA. City approval does not automatically replace private HOA approval.

4. Check construction-and-demolition requirements

Certain projects require a Waste Management Plan before the construction permit is issued. Foster City uses this process to document construction and demolition debris diversion.

How to Apply for a Foster City Building Permit Online

Foster City uses eTRAKiT for building permits, permit searches, payments and inspection scheduling.

What Documents Should You Prepare?

The exact package depends on the project, but Foster City’s current Building Division materials identify several items that commonly matter.

• Completed Building Permit Application.
• Architectural and construction plans appropriate to the work.
• Structural drawings and calculations when required.
• Mechanical, electrical and plumbing information when applicable.
• Title 24 energy documentation and CALGreen information where applicable.
• Soils/geotechnical documentation for projects where required.
• Special inspection documentation when applicable.
• HOA approval when required for the property.
• Planning approval or related Planning documents where required.
• Construction and demolition Waste Management Plan when applicable.

Important details from the City’s permit application

The City’s building-permit application materials include several points that applicants often discover too late:

• If someone other than the owner is acting for the owner on a residential application, an authorization to act as an agent may be required.
• For contractor-led projects, the City may require documentation supporting the construction cost/project valuation.
• A geotechnical report is required by the City’s application instructions for new construction and additions involving habitable space.
• Commercial permit applications require licensed-contractor information; the City’s application instructions state that owner-builder status is not used for commercial applications.

Before uploading files, check the City’s Building Forms and Handouts. It includes project-specific resources for kitchens, bathrooms, reroofs, electrical service, EV charging, solar, tenant improvements, special inspections and other work.

Electronic plan file setup

Foster City’s electronic submittal instructions call for PDF documents. Plan sheets should be prepared so staff can review and mark them electronically. Supporting calculations, soils reports, energy forms and similar documents may need to be uploaded separately from the main plan set.

Clear filenames such as PLANS, STRUCTURAL CALCULATIONS, SOILS REPORT and ENERGY COMPLIANCE are much easier for staff to identify than vague filenames such as “scan001.pdf.”

Simple Permits, Over-the-Counter, Standard and Express Review

Not every permit follows the same plan-check process.

Can an over-the-counter permit really be issued the same day?

For a project that qualifies, the City’s OTC guide says review and issuance can occur during the appointment. That does not mean every small project automatically qualifies. Bring a complete application and every plan, product sheet, calculation or HOA document required for that specific scope.

How Long Does Foster City Plan Review Take?

The City’s Building Division permit flowchart gives a general 1–4 week plan-review timeline. This is not a promise for every application.

Before review begins, the City must first process the application and receive required plan-review payment. The City’s workflow also shows an initial routing stage that may involve multiple departments.

Review can take longer when:

• the application is incomplete;
• Planning approval is still pending;
• Fire, Public Works, Health or another department must review the project;
• plans need structural or technical corrections;
• the applicant does not answer every plan-check comment;
• revised drawings do not clearly identify changes.

If you receive plan-check corrections

1. Read every comment before editing the drawings.
2. Revise the complete plan set.
3. Prepare a response explaining how each comment was addressed.
4. Upload the revised package through the permit process.
5. Repeat until all required reviewing divisions show approval.

Do not upload only the one page that changed unless the City specifically instructs you to do that. A coordinated complete set makes it easier for reviewers to verify the project.

Foster City Building Permit Fees

There is no single Foster City building-permit price. Fees can depend on project valuation, permit type, plan review, trade work, revisions, state charges and other project-specific reviews.

The City explains that final fees are determined after staff reviews the application and project scope. Additional plan reviews, revisions or special services can add costs.

How to Check a Foster City Permit Status

You can search many permit records without trying to find the correct staff member first.

1. Open the official Permit Search.
2. Select the available search field.
3. Enter the permit number or supported property information.
4. Open the matching permit.
5. Review the available permit information, site details, contacts, fees, inspections, chronology, conditions and reviews.

If you are the applicant and the permit is connected to your eTRAKiT account, the City’s FAQ advises checking My Active Permits. If the record is not linked to your account, search by the address or permit number.

How Foster City Building Inspections Work

An issued permit is not the end of the process. Construction must be inspected at the required stages before regulated work is covered or the project is finalized.

Important 2026 pre-construction requirement

Foster City’s eTRAKiT portal currently instructs applicants to schedule a pre-construction inspection before beginning construction or demolition. Schedule it after the permit has been issued.

What time will the inspector arrive?

The City’s Building FAQ says inspection assignments use an AM window of 8:30 AM–12:00 PM or a PM window of 12:00 PM–4:00 PM. Check eTRAKiT after approximately 8:30 AM on the inspection day for the assigned window.

Have these ready at the job site

• Printed permit card when required.
• Approved plans and documents.
• Safe access to the inspection area.
• Work completely ready for the requested inspection.
• Previous correction items completed.

The City’s inspection workflow states that approved documents and plans should be available for the inspector and that the permit card should be posted at the site.

If an inspection fails

The inspector may issue corrections. Fix the listed items and schedule the same inspection type again. Foster City’s inspection flowchart warns that reinspection fees may be added when the same inspection fails twice; a no-show can count as an inspection.

Fire sprinkler and fire-alarm inspections may involve the San Mateo Consolidated Fire Department rather than the Building Division.

Final inspection

Required departmental approvals should be completed before requesting the final building inspection. The City’s workflow states that final approval on the building permit card serves as the Certificate of Occupancy for that permit, with a formal frameable certificate available when applicable and requested.

Which Building Codes Apply in Foster City in 2026?

Foster City adopted the 2025 California Building Standards Code cycle with local amendments. The 2025 California code cycle became effective January 1, 2026. Foster City’s eTRAKiT notice allowed qualifying applications under the prior 2022 cycle only through January 9, 2026.

For new 2026 applications, applicable standards can include:

• 2025 California Building Code
• 2025 California Residential Code
• 2025 California Electrical Code
• 2025 California Mechanical Code
• 2025 California Plumbing Code
• 2025 California Fire Code
• 2025 California Existing Building Code
• California Energy Code
• California Green Building Standards Code (CALGreen)
• Foster City Municipal Code amendments and project-specific requirements

Our California Building Code 2026 guide explains the statewide Title 24 cycle. For an actual permit, always apply Foster City’s local amendments and the requirements associated with the property and project.

Construction Hours in Foster City

The City currently publishes the following general construction-equipment hours for residential districts and areas within 100 yards of a residential district:

Major developments can have stricter work-hour limits written into their conditions of approval. For those projects, the project-specific approval controls.

How to Find Old Building Permits or House Plans

If you are buying a home, planning a remodel or trying to understand earlier additions, old permit records can be extremely useful.

Start with the online permit search. For plans that are not available online, contact Building Division.

The City explains that original plans for homes constructed before Foster City’s incorporation period may not be available. For homes built after 1972, typical plans and permit records may be available for viewing at City Hall, subject to record availability and copyright restrictions.

A Public Records Act request may be needed for copies. Because architectural plans can be protected by copyright, having a record on file does not automatically mean the City can reproduce the entire plan set for you.

For plan-record questions or an appointment, call 650-286-3227.

ADUs, Commercial Projects and Contractor Requirements

ADUs and JADUs

Foster City maintains a dedicated ADU resource page with the current ordinance, handbook, application resources, checklists, neighbor-notification information and pre-approved design resources.

Use that page before preparing final drawings because ADU requirements are influenced by both California law and Foster City’s local implementation.

Commercial tenant improvements

Commercial work commonly requires more coordination than a residential repair. Before signing a lease or committing to construction costs, confirm:

• the proposed business use is allowed;
• Planning approval or a use permit is not required;
• the tenant-improvement plans satisfy accessibility requirements;
• Fire review is addressed when required;
• sign permits are handled separately where applicable;
• a Foster City business license is obtained.

Contractors doing work in Foster City

The City states that a person engaged in business in Foster City must maintain the required Foster City business license. This is separate from a California contractor license and separate from the building permit itself.

Common Problems That Delay Foster City Permits

Foster City Building Department FAQs

Best Way to Start Your Foster City Project

If you are still at the planning stage, do not begin by uploading random documents into the permit portal. First confirm jurisdiction and Planning requirements, check the City’s project-specific handouts, prepare the complete plan package and then submit through eTRAKiT.

Once your application is accepted, follow the City’s payment request, respond carefully to every plan-check comment, obtain permit issuance, schedule the required pre-construction inspection and keep approved documents available throughout construction. This sequence avoids many of the problems that cause otherwise straightforward permits to stall.

Independent resource: USBuilding.org is an informational website and is not the City of Foster City or a government agency. Permit requirements, fees, staffing, appointment availability and project-specific conditions can change. The City of Foster City makes the final determination for an individual property or project.