Foster City, CA Building Permits & Teardown Predictor
We track every Foster City building permit, demolition filing, zoning change, and off-market transaction in one place, giving spec builders and developers a single feed of where the market is moving. Each permit is scored against lot value, structure age, and neighborhood comps to surface high-ROI teardown and new-build opportunities before they hit the MLS.
Related guides: Who tracks demolition & building permits in Silicon Valley? · Can you SB 9 lot-split in Foster City? Run the screener · How to estimate developer ROI on a teardown rebuild
The free weekly Peninsula Plays brief
One email a week on Peninsula permits, teardowns and sales: what sold, what is sitting, and which houses just pulled the permit that says they are about to change. Built from permits, parcels and recorded sales, no spam.
Why Developers Target Foster City
Foster City has seen a surge in “mansionization”, older, smaller homes on large lots demolished to build luxury spec homes. AddressIntel's algorithm identifies these aging properties from Floor Area Ratio (FAR), recent neighborhood comps, and permit velocity.
- Automated Demolition Cost Estimates
- New-Build Proforma ROI Generation
- Real-time Permit Webhooks
Foster City Market Metrics
| Permits Trackedall permits on file | 57 |
|---|---|
| Demolition Permitssince January 1, 2023 | 1 |
| New-Construction Permitssince January 1, 2023 | 0 |
| High-Probability Teardowns | 7 Active |
| Total Declared Permit Valuesince January 1, 2023 | — |
Foster City & San Mateo County Building Permits
AddressIntel tracks 57 Foster City building permits as part of our San Mateo County building permits dataset, pulled from municipal sources and updated regularly. Whether you need to look up a single Foster City building permit for one address or scan San Mateo County building permits for teardown and new-construction activity, every filing is scored for developer ROI and teardown potential.
Working a teardown? See our guide to the demolition permit process, or learn who tracks Silicon Valley building permits and how San Mateo County permit data reaches developers.
Top Teardown Opportunities in Foster City
| Address | Teardown Score | List Price |
|---|---|---|
| 999 Lurline Dr | 82 | $1,588,000 |
| 396 Port Royal Ave | 50 | $2,150,000 |
| 286 Puffin Ct | 40 | $1,748,000 |
| 796 Ranger Cir | 40 | $2,198,880 |
| 560 Trinidad Ln | 35 | $2,560,000 |
| 867 Arcturus Cir | 20 | $2,555,000 |
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Recent Foster City Building Permits
The latest Foster City building permits and demolition filings, drawn from 57 permits we track for the city, pulled from municipal sources and updated regularly.
| Address | Type | Value | Issued |
|---|---|---|---|
| 1142 POLYNESIA DR | BUILDING RESIDENTIAL - WINDOW INSERTS - SAME SIZE RETROFITS_434 | — | 2026-10-23 |
| 291 HUDSON BAY ST | BUILDING RESIDENTIAL - REROOF_NA | — | 2026-10-19 |
| 879 LURLINE DR | BUILDING RESIDENTIAL - REPAIR_NA | — | 2026-10-13 |
| 1051 FLYING FISH ST | BUILDING RESIDENTIAL - REROOF_NA | — | 2026-10-12 |
| 815 817 819 821 RIGEL LN | BUILDING RESIDENTIAL - REROOF_NA | — | 2026-10-12 |
| 1111 BLYTHE ST | BUILDING RESIDENTIAL - WINDOW REPLACEMENT_434 | — | 2026-10-09 |
| 238 BEACH PARK BLVD | BUILDING RESIDENTIAL - REROOF_NA | — | 2026-10-09 |
| 210 PELICAN CT | BUILDING RESIDENTIAL - REROOF_NA | — | 2026-10-06 |
Foster City Teardown & Permit FAQ
How many teardown opportunities are there in Foster City?
AddressIntel currently tracks 7 high-probability teardown opportunities in Foster City, scored by lot value, structure age, and neighborhood comps.
What is the typical developer ROI on a Foster City teardown?
We do not publish a single Foster City figure, because there is no honest one: returns swing on land cost, buildable envelope, and comps. Instead, every Foster City property page carries an interactive build-to-zoning proforma (purchase, demolition, construction at current costs, cost of sale against size-matched comps) so each lot is underwritten on its own numbers.
Where can I find recent Foster City building permits?
AddressIntel tracks Foster City building permits (57 permits currently on file), including new construction, additions, and demolition filings, pulled from municipal sources and updated regularly. See the recent permits table above for the latest activity.
How do I find demolition permits in Foster City?
AddressIntel tracks Foster City building and demolition permits (1 full-structure demolition permits since January 1, 2023), updated regularly from municipal sources.