What happens if you skip the permit (and you needed one)
- Stop-work orders carry $250–$500 fines in Foster City, plus double permitting fees when you eventually pull the correct permits — a $600 electrical permit becomes $1,200.
- Insurance denials: homeowners policies explicitly exclude unpermitted work; water/electrical damage from unpermitted plumbing or electrical work is often denied, leaving you liable for $10,000–$50,000+ in repairs.
- Title transfer hit: California requires TDS (Transfer Disclosure Statement) disclosure of unpermitted work; buyers' lenders often refuse to finance, forcing a cash sale or price cut of 5–15% ($50,000–$150,000+ on a Bay Area home).
- Bay Mud settlement risk: Foster City sits on bay mud; unpermitted plumbing work without proper slope/support can shift under seasonal water table changes, causing cracked slabs and foundation issues that cost $15,000–$40,000 to remediate and are uninsurable if unpermitted.
Foster City full kitchen remodels — the key details
California B&P Code § 7044 allows owner-builders to pull permits for their own homes, but with a critical exception: electrical and plumbing work requires state-licensed contractors. In Foster City, this means you can manage the general construction permit yourself, but you must hire a licensed electrical contractor to pull the electrical permit and a licensed plumbing contractor to pull the plumbing permit. Many homeowners skip this step, thinking they can hire an unlicensed worker to 'help' — the city's inspectors will catch it at the rough electrical or rough plumbing inspection, issue a stop-work order, and require you to hire a licensed contractor to redo the work. The Building Department's online submission form has a checkbox field asking whether you are pulling as owner-builder; checking 'yes' triggers an automated reminder that electrical and plumbing sub-permits must be pulled by licensed contractors. This is a city-specific friction point because some neighboring cities (Belmont, San Carlos) have less aggressive plan-review enforcement of this rule, allowing unlicensed subs to slide through to inspection; Foster City's inspectors are more consistent about this verification.
Plumbing in Foster City kitchens must comply with California Plumbing Code (which adopts IRC P2722 with state amendments). The city's plan-review checklist explicitly requires a full drainage and venting diagram showing trap-arm length (cannot exceed 24 inches from trap weir to vent stack per code), and vent-stack sizing based on total drainage load. Foster City sits on bay mud, which means settlement is a real issue; undersized or missloped drainage lines can trap water and fail during the wet season. The city requires all kitchen drain lines to have a minimum 1/4-inch-per-foot slope, and the plan must show this with dimensions on a full floor-plan drawing. Many homeowners and contractors submit simplified 'schematic' plumbing drawings; Foster City will reject these and send them back for full-scale details. Expect a 2–3 week turnaround on first-submission plan review; second submissions with corrected drawings typically clear in 1 week. The plumbing permit itself costs $150–$300 depending on the valuation (typically 1.5–2% of total project cost).
Electrical work in a full kitchen remodel triggers California Title 24 requirements for two dedicated small-appliance branch circuits (per NEC 210.11(C)(1), as adopted by California). These two circuits must be sized for 20 amps each, cannot be shared with lighting, and must serve all countertop receptacles. The city's plan must show these circuits explicitly labeled and color-coded on a one-line diagram. Additionally, all countertop receptacles must be GFCI-protected (either individual GFCI outlets or a GFCI breaker protecting the entire circuit), and no receptacle can be more than 48 inches from an adjacent receptacle (per NEC 210.52(A)(1)). The range outlet (typically 40–50 amp, 240-volt) is a separate circuit, and the dishwasher is a third dedicated circuit. Foster City inspectors will request a full electrical floor-plan and one-line diagram during plan review; schematic or incomplete drawings are returned for revision. Many contractors skip the 48-inch spacing diagram or fail to label GFCI requirements clearly — these are the top two rejection reasons the city sees. The electrical permit costs $200–$500 depending on scope and valuation.
Gas line changes (if you're moving a cooktop or adding a gas range) require a separate plumbing permit (gas lines fall under California Plumbing Code jurisdiction, not electrical). The plan must show existing gas meter location, proposed cooktop/range location, pipe sizing, and termination details (manifold, shutoff valve). If you're moving the cooktop more than 10 feet from the current location, the city may require a new gas line from the meter, which can involve wall drilling and may require a licensed plumber's statement that the line is pressure-tested and leak-free. Gas-line permits cost $100–$200. If you're not moving the gas line, only replacing an in-place cooktop with a new cooktop of the same type and location, no gas permit is required — but the plumbing inspector will verify this at rough plumbing inspection.
Range hood ventilation (if you're installing a hood that ducts to the exterior) requires a plan detail showing the duct routing, diameter (typically 6 inches for a residential kitchen), insulation (if the duct runs through an unconditioned space like an attic), and exterior termination cap. California Title 24 requires that kitchen hoods operate at a minimum of 100 CFM (or 5 air changes per hour of kitchen volume, whichever is greater). Foster City's plan-review checklist explicitly flags missing duct termination details as a common rejection; the city wants to see that the duct terminates through an exterior wall or roof with a damper-equipped cap to prevent cold-air backflow. Ductless 'recirculating' hoods that filter and recirculate air are allowed but less common; if you're choosing this route, you still need to show the filter type and maintenance access on the plan. These details are typically part of the building permit and don't require a separate mechanical permit, but some kitchens with complex HVAC integration may require mechanical sign-off.
Three Foster City kitchen remodel (full) scenarios
Bay Mud, slope, and why Foster City's plumbing plan-review is stricter than neighbors
Foster City sits on San Francisco Bay mud, a soft, compressible clay layer deposited over millennia. Homes in Foster City are typically built on pilings or deep foundations to prevent settlement. What this means for your kitchen remodel: any new plumbing run that doesn't have adequate slope (minimum 1/4 inch per foot) or support can trap water and fail during the wet winter months when the water table rises. The city has seen enough failed drain lines in older kitchens that it now requires full-scale drainage plans with dimensions on all remodels — this is a higher bar than some neighboring cities (San Mateo, San Carlos) which sometimes accept schematic drainage sketches. Foster City's Building Department FAQ explicitly states: 'All plumbing plans must show drain-line slope and trap-arm dimensions; schematic drawings will be returned for revision.' This upfront rigor saves headaches later: if your contractor installs a drain line with insufficient slope and it plugs during the first rainy season, the city's inspection records show that the plan was reviewed and approved with specific slope dimensions, protecting both you and the city from liability.
The second reason Foster City is strict on plumbing plans is the bay-mud settlement risk over time. If a drain line sags or settles, it can trap water and collapse. The city wants the plumbing inspector to verify at rough-in that the drain line is supported on a proper slope and that the vent stack is correctly sized and routed. This typically requires 2–3 inspections: rough plumbing (before walls are closed), final plumbing (after walls are closed and all rough-in is done), and a final visual inspection at completion. Expect these inspections to be thorough; the inspector will measure slope with a level, verify trap-arm length with a tape measure, and confirm that vent stacks are properly sized per code tables.
For owner-builders managing kitchen plumbing plans, the key is to hire a licensed plumber early in the design phase, not after the fact. The plumber will prepare the plan with the slope and trap-arm details the city requires; the city will review it in 2–3 weeks; and you'll avoid a second submission round. Budget $500–$1,500 for the plumbing plan alone (separate from the plumber's labor cost for installation). If you're doing this DIY, you'll likely need to hire a plumber to review your drawings before submission, which is a good investment to avoid rejection.
Title 24 small-appliance circuits, GFCI, and the most common electrical rejections in Foster City kitchens
California Title 24 (2022 edition, adopted by Foster City) requires that kitchens have two dedicated small-appliance branch circuits, each sized for 20 amps and 120 volts. These two circuits must serve all countertop receptacles and the refrigerator; they cannot be shared with other loads like lighting or garbage disposal. The intent is to prevent overloads when you run a toaster, microwave, and coffee maker simultaneously. The electrical plan must explicitly show these two circuits on a one-line diagram with wire gauges (typically 12 AWG for 20-amp circuits) and breaker sizes. Foster City's Building Department plan-review checklist lists 'Two small-appliance branch circuits not shown' as the #1 electrical rejection reason in kitchens. Many contractors and handymen either don't know about this requirement or assume one dedicated circuit is enough. The city will send the plan back for revision if the two circuits are not clearly labeled.
The second most common rejection is improper GFCI protection. All countertop receptacles within 6 feet of the sink must be GFCI-protected. GFCI protection can be provided in two ways: (1) individual GFCI outlets at each location, or (2) a GFCI breaker in the panel protecting the entire circuit. Many plans show GFCI outlets at some locations but not others, or show a GFCI breaker protecting the small-appliance circuits but no individual GFCI outlets at the sink counter. The code requires GFCI at every location within 6 feet of the sink. The electrical plan must call this out clearly, or the inspector will flag it at rough-in and require a correction before the drywall goes up. Additionally, no countertop receptacle can be more than 48 inches from the next receptacle. This spacing requirement is often missed in remodels where the layout changes; the plan must show receptacle spacing with dimensions.
For island kitchens with cooktops, the cooktop circuit is separate: typically 40–50 amps at 240 volts for electric cooktops, or 20 amps at 120 volts plus a gas line for gas cooktops. This circuit must be shown separately on the one-line diagram and is not part of the two small-appliance circuits. Dishwashers also get a dedicated 20-amp circuit at 120 volts. The disposal, if present, is typically on the lighting circuit or its own small circuit; some codes allow it on the dishwasher circuit if capacity allows, but Foster City prefers it shown separately on the plan. The key to avoiding rejections: hire a licensed electrician to prepare the electrical plan, or if you're submitting a DIY plan, have an electrician review it before you file. The plan-review fee ($200–$500) is much cheaper than a rejection and resubmission cycle.
610 Foster City Boulevard, Foster City, CA 94404
Phone: (650) 286-3200 | https://www.fostercity.org/permits-and-planning (search 'Foster City online permit portal' to confirm current URL)
Monday–Friday, 8:00 AM–5:00 PM (verify by phone; hours may vary)
Common questions
Can I do a full kitchen remodel as an owner-builder in Foster City?
Partially. California B&P Code § 7044 allows owner-builders to pull their own building permits, but electrical and plumbing work must be pulled by state-licensed contractors. You can manage the general construction permit and hire subs, but the electrical and plumbing permits must be pulled by licensed electricians and plumbers. Foster City's inspectors verify this at the rough inspection; if an unlicensed electrician or plumber is found to have done the work, a stop-work order is issued and you must hire a licensed contractor to redo it.
How long does plan review take for a full kitchen remodel in Foster City?
Typically 3–6 weeks. A straightforward remodel with plumbing relocation and electrical circuit changes takes 3–4 weeks. If the plan includes structural changes (load-bearing wall removal), add another 2–3 weeks for the structural engineer's letter and beam review. Plan review is longer in Foster City than some neighbors because the city's checklist is detailed (bay-mud drainage concerns, Title 24 GFCI/circuit labeling). Resubmissions (if the first plan is rejected for missing details) typically clear in 1 week.
Do I need a separate mechanical permit for the range hood vent?
No, the range hood vent is typically included in the building permit. You do not need a separate mechanical permit for a standard kitchen range hood. However, the building plan must show the duct routing, diameter (typically 6 inches), insulation (if the duct runs through an attic or unconditioned space), and the exterior termination cap detail. Foster City explicitly requires this termination detail on the plan; vague or missing duct routing is a common reason for plan rejection.
How much do permits cost for a full kitchen remodel in Foster City?
Permit fees vary with project valuation. A typical full kitchen remodel ($20,000–$40,000) will incur: Building permit $400–$600, Plumbing permit $200–$300, Electrical permit $250–$400. Total permits: $850–$1,300. Fees are typically 1.5–2% of the declared project cost. If you're removing a load-bearing wall, add a structural review (included in the building permit fee, but the structural engineer's own fee is $800–$2,000 separate). These are city fees; they do not include contractor labor or materials.
What if I'm only moving the kitchen sink, nothing else?
Moving the sink requires a plumbing permit. The plan must show the new drain-line routing, slope, and trap-arm distance to the vent stack. Even if you're not touching electrical, gas, or structural elements, the plumbing work alone triggers a permit. Foster City will require a licensed plumber to pull the plumbing permit and perform the rough and final inspections. The plumbing permit costs $150–$250.
Do I need plan drawings, or can I describe the work to the city?
You must submit plan drawings. Foster City requires scaled floor plans (typically 1/4 inch = 1 foot) showing the kitchen layout, fixture locations, electrical outlet locations, plumbing drain and supply lines, and gas line routing (if applicable). For electrical work, a one-line diagram is required showing circuit numbers, breaker sizes, and wire gauges. Schematic or hand-drawn sketches are not accepted; plans must be legible and to scale. If you're working with a contractor or architect, they will prepare these drawings. If you're DIY, you may need to hire a drafter or use CAD software.
What is the biggest reason kitchen remodel plans get rejected in Foster City?
Missing or incomplete plumbing drainage details (trap-arm length, vent-stack routing, slope dimensions) and missing electrical circuit labeling (the two small-appliance circuits not clearly shown, GFCI protection not labeled). These are the two consistent rejection reasons. Foster City's plan-review checklist is explicit about what must be shown; submitting a plan without these details will result in a rejection and a 1–2 week resubmission cycle. Budget for a licensed electrician and plumber to review your plan before filing to catch these issues early.
If my house was built before 1978, do I need lead-paint testing or disclosure for a kitchen remodel?
Lead-paint disclosure is required by California law, but it's not a building permit requirement — it's a real-estate/health requirement. Before starting any remodel in a pre-1978 home, you must provide anyone living in the home (and any workers) with an EPA lead-disclosure pamphlet. If you suspect lead paint, hiring a certified lead inspector ($400–$800) before the remodel begins can identify lead-containing surfaces; the contractor can then use lead-safe work practices (containment, HEPA vacuuming, wet wiping) to avoid dust. This is separate from the permit process but is legally required and failure to disclose can result in fines.
Can I use a general contractor or do I need separate electricians and plumbers?
You can hire a general contractor to manage the project, but the electrician and plumber must be state-licensed. A general contractor typically subcontracts the electrical and plumbing work to licensed trades. The general contractor can pull the building permit, but the electrician and plumber will pull their own electrical and plumbing permits. The city will require proof of licensure (contractor's license number and current DEA/license verification) on the permit applications. Do not hire unlicensed subs; the city will catch it at inspection and issue a stop-work order.
What happens at the rough plumbing and rough electrical inspections?
The rough plumbing inspection verifies that all drain lines are properly sloped (1/4 inch per foot minimum), that trap arms are within code distance (24 inches max from trap weir to vent), that vent stacks are properly sized, and that all connections are made correctly. The rough electrical inspection verifies that all circuits are run in the correct gauge wire, that breaker sizes match the wire gauges, that GFCI protection is in place at all required locations, and that outlet spacing is correct (no more than 48 inches apart). Both inspections occur before drywall is installed; if issues are found, you must make corrections and request a re-inspection. Plan on 2–3 days turnaround for inspection scheduling.