4243 N Mammoth Ave, Los Angeles
1 home-service permit on record at 4243 N Mammoth Ave, Los Angeles; the roof was last permitted on Nov 16, 2020 at a declared value of $8,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 16, 2020 | Bldg-Alter/Repair: ROOF TRUSSES FOR APARTMENT BUILDING | Roofing | $8,000 | — | Finaled Sep 7, 2021 | 20016-20000-21811 |
On N Mammoth Ave
82 permits on record on N Mammoth Ave.
| Trade | Permits | Since Oct 6, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 65 | 16 | $5,000 | $1,800–$7,630 | Sep 27, 2026 |
| Heating and cooling | 8 | 3 | — | under 5 | Jul 1, 2026 |
| Plumbing | 6 | 2 | — | under 5 | Mar 4, 2025 |
| Electrical | 3 | 2 | — | under 5 | Sep 9, 2025 |
Roof replacement cost in Los Angeles
Across 20,953 one- and two-family reroof permits since October 6, 2024, most declared values run from $2,000 to $12,900 (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 5,341 one- and two-family heating and cooling permits since October 6, 2024, most declared values run from $501 to $39,220 (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 6, 2026. Owner names are not shown on any page.