21100 W Erwin St, Los Angeles
1 home-service permit on record at 21100 W Erwin St, Los Angeles; the roof was last permitted on Apr 6, 2022 at a declared value of $11,000,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Apr 6, 2022 | Bldg-Alter/Repair: CHANGE OF USE & TENANT IMPROVEMENT 2-STORY OFFICE TO MEDICAL OFFICE/ RESEARCH WITH ACCESSORY VIVARIUM 1,200 SF , CONVERT EXISITNG INDOOR GARAGE TO MECHANICAL EQUIPMENT AREA . INTERIOR IMPROVEMENTS, RE-ROOF ROOF & ELEVATOR & RE-STRIPE PARKING.1 OF 2 | Roofing | $11,000,000 | — | cofo issued | 21016-10000-08959 |
On W Erwin St
106 permits on record on W Erwin St.
| Trade | Permits | Since Oct 4, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 78 | 25 | $7,000 | $2,580–$29,702 | Aug 3, 2026 |
| Heating and cooling | 11 | 7 | $10,280 | $501–$109,100 | May 5, 2026 |
| Plumbing | 11 | 2 | — | under 5 | Feb 9, 2026 |
| Solar | 4 | 0 | — | under 5 | May 2, 2022 |
| Electrical | 2 | 1 | — | under 5 | Apr 16, 2026 |
Roof replacement cost in Los Angeles
Across 20,614 one- and two-family reroof permits since October 4, 2024, most declared values run from $2,000 to $13,000 (the middle 80%); the median is $5,200 and half fall between $3,600 and $7,800. The lowest on record is $19 and the highest $570,000. Every permit behind that range.
Furnace, heat pump or air conditioner replacement cost in Los Angeles
Across 5,315 one- and two-family heating and cooling permits since October 4, 2024, most declared values run from $501 to $39,031 (the middle 80%); the median is $4,251 and half fall between $1,250 and $15,000. The lowest on record is $1 and the highest $1,800,000. Every permit behind that range.
Source
Los Angeles Department of Building and Safety, via the city open-data portal, pulled nightly; the assessor roll for the property fields. As of October 4, 2026. Owner names are not shown on any page.