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Building permits in Clayton, CA
From Apr 27, 2026 to Oct 18, 2026, the weekly reports list 211 building permits with a Clayton address. That's about 8.4 a week, and $6.8M in declared work.
Contra Costa County issues building permits for the City of Clayton and lists them in its weekly report. We include all of them. Of the 211 here, 198 are from the City of Clayton and 13 are County permits for unincorporated land with a Clayton address.
- Last 4 weeks: 9.0 a week, against 8.4 over 25 weeks.
- Most common work: remodel / general, then solar.
- Median declared job: $18,720.
- 94% name a contractor. Most of the rest are owner-builder jobs.
- Biggest job in the period: $564,855, re-roof 475 squares safeway. overlaying the existing roof with white… (05/14/2026).
Clayton permits by trade
211 permits over 25 weeks, Apr 27, 2026 to Oct 18, 2026.
| Trade | Permits | Per week | Median value |
|---|---|---|---|
| Remodel / general | 55 | 2.2 | $15,000 |
| Solar | 36 | 1.4 | $31,232 |
| Electrical | 33 | 1.3 | $5,000 |
| HVAC | 33 | 1.3 | $15,459 |
| Roofing | 24 | 1.0 | $23,050 |
| Plumbing | 13 | 0.5 | $8,800 |
| Pool | 6 | 0.2 | $125,000 |
| ADU / new build / addition | 5 | 0.2 | $95,430 |
| Commercial (signs, telecom) | 4 | 0.2 | $25,000 |
| Landscape / hardscape | 2 | 0.1 | $28,500 |
Recent permits in Clayton
The 15 newest. The Monday email has every one, with the contractor's license phone.
Scroll the table sideways to see all columns.
| Issued | Trade | Address | Work | Value | Contractor |
|---|---|---|---|---|---|
| 10/16 | Remodel / general | 55 Karkin Pl | Replace 23 windows retrofit | $27,500 | Cal Coast Window & Door Inc |
| 10/15 | Landscape / hardscape | 5880 Herriman Dr | construction of open roof pergola structure 18'x16' | $12,000 | Alder Pool & Landscape Co |
| 10/15 | Electrical | 5826 Diablo Meadows Ct | Add (N) Tesla Wall Connector to (E) PG&E panel. Mount charger inside garage | $1,603 | Comletric Inc |
| 10/14 | Plumbing | 5947 Cardinet Dr | Replacing drains inside the house using ABS pipes & Installing new 50gal gas water heater | $14,558 | All Pro Repipes Inc |
| 10/13 | Plumbing | 267 Mountaire Pkwy | Whole house Copper water repipe | $15,819 | All Pro Repipes Inc |
| 10/13 | HVAC | 3033 Windmill Canyon Dr | R8 ducts 11 supplies 1 return | $15,459 | Service Champions |
| 10/13 | Remodel / general | 1467 Indianhead Cir | Replacing 6 existing windows using retro fin installation. no changes to any of the… | $15,000 | Custom Exteriors Inc |
| 10/09 | HVAC | 1346 El Camino Dr | 80k btus furnace changeout in closet | $11,472 | Service Champions |
| 10/09 | Electrical | 22 Westbrook Ct | MAIN PANEL UPGRADE (MPU) ONLY. Remove existing meter/main service panel and install new… | $8,000 | Lgcy Electric |
| 10/09 | Electrical | 428 Mt Sequoia Ct | Remove and reinstall solar panels for reroof (no change to array location). THE SOLAR… | $5,000 | All On Electric Inc |
| 10/08 | Roofing | 243 Mountaire Pkwy | Re Roof McAdams 25 sq COMP SHINGLES | $20,000 | Freeman Roofing |
| 10/07 | Pool | 402 Wright Ct | Strip pool, remove old tile and coping. Resurface pool, replace tile and coping. Replace… | $40,000 | None listed (owner-builder) |
| 10/07 | Solar | 55 La Honda Ct | Rooftop Mounted Solar Energy System PV+ST 17 REC460AA Pure-RX-DC solar modules 17… | $21,569 | Got Watts Electric, Solar & HVAC |
| 10/05 | Electrical | 1548 N Mitchell Canyon Rd | Removal and reinstallation of existing solar panels to accommodate roof replacement.… | $4,200 | Gayler Greg Construction Co |
| 10/01 | Solar | 321 Semillon Cir | Install 25 PV panels | 11.0kw | (1) tesla powerwall 3 | 200a sub panel | $30,000 | Solar Optimum Design & Electrical |
Busiest contractors here, last 90 days
| Contractor | Permits | Main trade | Value |
|---|---|---|---|
| Service Champions | 8 | HVAC | $134,957 |
| Renewal By Andersen Of San Francisco | 4 | Remodel / general | $32,115 |
| Got Watts Electric, Solar & HVAC | 4 | Solar | $69,043 |
| United Constructors Inc | 3 | Remodel / general | $16,406 |
| Environmental Heating & Air Solutions Inc | 3 | HVAC | $72,024 |
| Jacuzzi Bath Remodel Of California | 2 | Remodel / general | $18,658 |
| Revival Kitchen & Bath | 2 | Remodel / general | $15,806 |
| Corda Solar LLC | 2 | Solar | $87,547 |
Permits pulled Jul 20, 2026 to Oct 18, 2026. Names as on the permit or the state license.
Week by week
| Week | Permits |
|---|---|
| Week of Oct 12 | 7 |
| Week of Oct 5 | 7 |
| Week of Sep 28 | 10 |
| Week of Sep 21 | 12 |
| Week of Sep 14 | 5 |
| Week of Sep 7 | 7 |
| Week of Aug 31 | 10 |
| Week of Aug 24 | 9 |
Get the whole list every Monday
Every permit from last week, all trades, with the contractor's license phone number. Plain email, plus a CSV.
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