City of San Mateo Building Permits & Teardown Predictor
We track every San Mateo 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 San Mateo? 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 San Mateo
San Mateo 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
San Mateo Market Metrics
| Permits Trackedall permits on file | 536 |
|---|---|
| Demolition Permitssince January 1, 2023 | 0 |
| New-Construction Permitssince January 1, 2023 | 72 |
| High-Probability Teardowns | 64 Active |
| Total Declared Permit Valuesince January 1, 2023 | $96,795,665 |
San Mateo & San Mateo County Building Permits
AddressIntel tracks 536 San Mateo 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 San Mateo 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 San Mateo
| Address | Teardown Score | List Price |
|---|---|---|
| 3809 Colegrove St | 92 | $1,398,000 |
| 1245 Laurel Hill Dr | 92 | $2,788,000 |
| 2015 Ticonderoga Dr | 88 | $2,488,888 |
| 3726 Branson Dr | 86 | $1,488,000 |
| 221 N Delaware St | 85 | $1,198,000 |
| 2006 Los Altos Dr | 80 | $3,500,000 |
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Recent San Mateo Building Permits
The latest San Mateo building permits and demolition filings, drawn from 536 permits we track for the city, pulled from municipal sources and updated regularly.
| Address | Type | Value | Issued |
|---|---|---|---|
| 2072 S DELAWARE ST SAN MATEO 94403-1498 CA | Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat) - Kitchen & Bath Remodel (Flat) | $26,000 | 2026-10-24 |
| 25 MCAKER CT Unit: 134 SAN MATEO 94403-1755 CA | Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat) - Kitchen & Bath Remodel (Flat) | $14,310 | 2026-10-23 |
| 632 FALLON AVE Unit: B SAN MATEO CA 944013027 | Single Family (New) - New - New | $180,000 | 2026-10-23 |
| 632 W 39TH AVE SAN MATEO 94403-4149 CA | Single Family (Alteration/Repair) - Alter - Alter | $293,922 | 2026-10-21 |
| 1618 DOLAN AVE SAN MATEO 94401-2125 CA | Single Family (New) - New - New | $164,400 | 2026-10-21 |
| 847 N HUMBOLDT ST Unit: 401 SAN MATEO 94401-1485 CA | Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat) - Kitchen & Bath Remodel (Flat) | $42,000 | 2026-10-21 |
| 308 42ND AVE SAN MATEO CA 94403-5004 | Single Family (Addition) - Add/Alter - Add/Alter | $234,243 | 2026-10-20 |
| 416 FAIRFAX AVE SAN MATEO 94402-2210 CA | Single Family (Alteration/Repair) - Alter - Alter | $7,500 | 2026-10-20 |
San Mateo Teardown & Permit FAQ
How many teardown opportunities are there in San Mateo?
AddressIntel currently tracks 64 high-probability teardown opportunities in San Mateo, scored by lot value, structure age, and neighborhood comps.
What is the typical developer ROI on a San Mateo teardown?
We do not publish a single San Mateo figure, because there is no honest one: returns swing on land cost, buildable envelope, and comps. Instead, every San Mateo 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 San Mateo building permits?
AddressIntel tracks San Mateo building permits (536 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 San Mateo?
AddressIntel tracks San Mateo building and demolition permits, updated regularly from municipal sources.