Block 2817, lot 018
20 Alton Ave
- City’s use
- Single Family Residential
- Built
- 1949
- Stories
- 2
- Units
- 1
- Rooms
- 3 bedrooms, 3 bathrooms
- Building
- 1,534 sq ft
- Lot
- 3,693 sq ft
- Zoning
- RH1D
- Construction type
- D
From the assessor's latest secured roll, which can lag recent work. Lot plans, zoning and planning history on the city’s Property Information Map
Permits filed here
3 permits filed for this property since 2000.
| Filed | Outcome | Address | Contractor | Work described on the permit | Declared cost |
|---|---|---|---|---|---|
| Jun 5, 2025 | Completed final sign-off Sep 2026 | 20 Alton Av | Andrew Gallagher Construction | horizontal addition for new stairs at 3rd fl. interior remodel. lower floor at media room at ground level to create more ceiling height. 9 (n) windows and 1 (n) sliding door. removal of (e) rear deckDetails
horizontal addition for new stairs at 3rd fl. interior remodel. lower floor at media room at ground level to create more ceiling height. 9 (n) windows and 1 (n) sliding door. removal of (e) rear deck | $300,000 |
| Feb 11, 2013 | Completed final sign-off Mar 2013 | 20 Alton Av | Golden Roofing, Inc. | reroofing.Details
reroofing. | $9,000 |
| Feb 17, 2012 | Never finaled issued Feb 2012, no final | 20 Alton Av | Renewal By Andersen | replace (4) windows in 1 opening with fibrex paintable wood composite. not in bedroom. u-factor less than .40. note: existing windows matl appears to be vinyl - replacing same size with mulled 4w casement/pw combo, visible from street.Details
replace (4) windows in 1 opening with fibrex paintable wood composite. not in bedroom. u-factor less than .40. note: existing windows matl appears to be vinyl - replacing same size with mulled 4w casement/pw combo, visible from street. | $3,556 |
Who worked here
Everyone with a license on these permits, by role, with how many permits each is on.
- Contractors
- Andrew Gallagher Construction, Golden Roofing, Inc., Renewal By Andersen
- Architects
- Brooks Mcdonald
- Engineers
- Donald David
Find contractors for work like this
Starts from the last permit filed here; change it to describe your own project. Results cover single-family homes like this one.