Active in Unincorporated Marin (81 permits)
Raw permit filing aliases merged: SIMPSON SHEET METAL INC · SIMPSON SHEET METAL, INC
81 issued · 75 parcels
vs 23 prior 24m(−43%)
Includes 1 ADU permits
Sum of permit job values
Application → issuance
Latest: Aug 10, 2026
Where this builder's geocoded permits cluster
Compares this builder's median days from permit application to issuance against all peer permits in Unincorporated Marin (trailing 5-year benchmark).
| Permit Category | Permits | Issued | Units | Declared Valuation | Builder Median Review | City Median (75th pct) | Relative Pace |
|---|---|---|---|---|---|---|---|
| 77 | 77 | — | $1,326,301 | 0d (n=68) | 0d (0d p75) | Within typical range | |
| 3 | 3 | — | $39,365 | 0d (n=3) | 0d (1d p75) | Within typical range | |
| 1 | 1 | 1 | $21,200 | — | 204d (331d p75) | — |
Multi-permit and HCD housing projects linked to this builder's permits
Click any address to open the full property dossier or inspect the official agency record
| Property / Parcel | Record & Category | Applied / Issued | Status | Valuation | Work Description & Raw Attribution |
|---|---|---|---|---|---|
| 16 Eagle Rock Rd Unincorporated Marin · APN 034-082-11 | Other B47845Portal ↗ | Issued Aug 10, 2026 0d review | Issued | $7,965 | Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 2130 Elderberry Ln Unincorporated Marin · APN 164-022-07 | Other B47306Portal ↗ | Issued Jun 25, 2026 0d review | Issued | $11,400 | Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 11 Fire Rd Unincorporated Marin · APN 172-081-03 | Other B46018Portal ↗ | Issued Feb 26, 2026 0d review | Issued | $20,000 | Mechanical Appliance, Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 1097 W California Ave Unincorporated Marin · APN 048-202-38 | HVAC / heat pump B45108Portal ↗ | Issued Dec 10, 2025 0d review | Issued | $17,950 | Replace existing furnace with new 95% AFUE furnace + install Carrier AC. — Mechanical Appliance, Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 446 Palm Ave Unincorporated Marin · APN 071-071-26 | HVAC / heat pump B44912Portal ↗ | Issued Nov 25, 2025 0d review | Issued | $41,410 | Main Floor - replace old furnace with new furnace. 2nd floor - Replace existing furnace and a/c with dual fuel furnace + heat pump. 3rd floor - Replace existing furnace and a/c with dual fuel furnace + heat pump — Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 38 Almenar Dr Unincorporated Marin · APN 070-151-47 | HVAC / heat pump B44911Portal ↗ | Issued Nov 25, 2025 0d review | Issued | $10,715 | REPLACE FURNACE, DUCTS — Replace Ductwork, Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 1731 Indian Valley Rd Unincorporated Marin · APN 146-303-02 | HVAC / heat pump B44758Portal ↗ | Issued Nov 12, 2025 0d review | Issued | $20,410 | Replace existing gas furnace with new 5-ton Carrier ducted heat pump system. — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 100 Silver Hills Rd Unincorporated Marin · APN 166-140-17 | HVAC / heat pump B44757Portal ↗ | Issued Nov 12, 2025 0d review | Issued | $10,875 | ADD NEW DUCTLESS MINI SPLIT SYSTEM — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 25 Knob Hill Rd Unincorporated Marin · APN 119-181-18 | Accessory dwelling unit (new or conversion) B44610Portal ↗ | Issued Oct 30, 2025 0d review | Issued | $21,200 1 units | MAIN HOUSE - ADD DUCTLESS MINI SPLIT SYSTEM WITH 2 INDOOR HEADS. ADU - ADD DUCTLESS MINI SPLIT SYSTEM WITH 1 INDOOR HEAD. — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 12401 Sir Francis Drake Blvd Unincorporated Marin · APN 114-172-10 | HVAC / heat pump B43187Portal ↗ | Issued Jul 22, 2025 0d review | Issued | $7,350 | ADD NEW DUCTLESS MINI SPLIT SYSTEM TO SERVICE LIVING ROOM — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 30 Upland Rd Unincorporated Marin · APN 075-012-03 | HVAC / heat pump B41451Portal ↗ | Issued Feb 28, 2025 0d review | Issued | $15,235 | Install new 4 ton Carrier AC, COIL, and adapt to existing horizontal Furnace in attic — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 140 John St Unincorporated Marin · APN 102-073-07 | HVAC / heat pump B40859Portal ↗ | Issued Jan 15, 2025 0d review | Issued | $13,000 | install new heat pump on to existing gas furnace to allow for electric heat & cooling — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 901 Centro Way Unincorporated Marin · APN 048-171-06 | HVAC / heat pump B40231Portal ↗ | Issued Nov 19, 2024 0d review | Issued | $14,840 | Replace furnace & duct work with new 95% AFUE furnace and aluminum line duct work (R8 insulated) — Replace Ductwork, Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 105 Vision Rd Unincorporated Marin · APN 112-182-08 | HVAC / heat pump B40144Portal ↗ | Issued Nov 11, 2024 0d review | Issued | $9,165 | ADD NEW DUCTLESS MINI SPLIT SYSTEM. — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 335 Highland Ave Unincorporated Marin · APN 015-241-12 | HVAC / heat pump B40142Portal ↗ | Issued Nov 11, 2024 0d review | Issued | $27,960 | Replace existing 95% AFUE gas furnace with new 97% AFUE gas furnace. Replace existing 5 ton AC and install new Carrier 5 ton AC. — Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 2036 Hatch Rd Unincorporated Marin · APN 146-250-84 | HVAC / heat pump B39332Portal ↗ | Issued Sep 3, 2024 0d review | Issued | $15,320 | Install new R8 Alumaflex ductwork in crawl space location of home. — Replace Ductwork Filed as: SIMPSON SHEET METAL INC |
| 7 Mesa Rd Unincorporated Marin · APN 119-140-35 | HVAC / heat pump B39142Portal ↗ | Issued Aug 16, 2024 0d review | Issued | $11,875 | ADD NEW HEAT PUMP & COIL TO EXISTING FURNACE — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 68 Creekside Dr Unincorporated Marin · APN 164-630-18 | HVAC / heat pump B39017Portal ↗ | Issued Aug 6, 2024 0d review | Issued | $43,425 | Replace (2) old 80% AFUE furnace units with new 96% AFUE variable speed furnace units. Replace (2) old A/C units with new inverter heat pumps. Homeowner has Tesla batteries and wants the dual-fuel set up for gas heat and electric heat — Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 2063 Huckleberry Rd Unincorporated Marin · APN 164-012-06 | HVAC / heat pump B39014Portal ↗ | Issued Aug 6, 2024 0d review | Issued | $19,930 | ADD NEW DUCTLESS MINI SPLIT — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 65 Third St Unincorporated Marin · APN 119-224-09 | HVAC / heat pump B38967Portal ↗ | Issued Aug 2, 2024 0d review | Issued | $20,250 | Install 3 indoor wall mount units to one outdoor heat pump on north end of building — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 390 S Morning Sun Ave Unincorporated Marin · APN 050-073-05 | HVAC / heat pump B38856Portal ↗ | Issued Jul 24, 2024 0d review | Issued | $21,600 | Replace existing 80% AFUE gas furnace with new Mitsubishi 3.5-ton air handler and Heat pump. — Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 1295 San Antonio Rd Unincorporated Marin · APN 125-040-38 | HVAC / heat pump B37331Portal ↗ | Issued Mar 13, 2024 0d review | Issued | $21,000 | HACIENDA HOUSE - install (3) indoor ceiling mount 1-way cassettes, connect to (1) outdoor Heat Pump — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 1295 San Antonio Rd Unincorporated Marin · APN 125-040-38 | HVAC / heat pump B37330Portal ↗ | Issued Mar 13, 2024 0d review | Issued | $25,000 | DAIRY HOUSE - Install (3) ductless wall mount units to (1) outdoor heat pump — Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 1295 San Antonio Rd Unincorporated Marin · APN 125-040-38 | HVAC / heat pump B37327Portal ↗ | Issued Mar 13, 2024 0d review | Issued | $32,348 | FARM HOUSE - remove gas furnace. Install new ducted heat pump with alumaflex duct work in the attic — New Ductwork, Mechanical Appliance, Replace Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |
| 41 Montecito Rd Unincorporated Marin · APN 016-053-03 | HVAC / heat pump B36927Portal ↗ | Issued Feb 6, 2024 0d review | Issued | $11,795 | ADD NEW DUCTLESS MINI SPLIT W/2 INDOOR UNITS — Mechanical Appliance Filed as: SIMPSON SHEET METAL INC |