Attached · Lone Mountain/USF
817 Lyon St
In progress+1 unit on this lot · now 215 permits
Vertical & horizontal addition to existing 1 story and (1) basement sfd. Proposed one additional residential unit.
filed May 2019issued Nov 2021 · permit wait 2 years 6 months5 years since issue
waiting for permitconstructionrelated building permitelectrical permitplumbing permit
Declared value
$898,034 + other work
the permit also covers work unrelated to the ADU, so this is not an ADU price
Permit wait
2 years 6 months
filed → issued
Build time
in progress
issued → completed
Builder
Martinez & Sons ContractorsPermits in this project
| Permit | What | When | Declared | |
|---|---|---|---|---|
| ADU permit | Vertical & horizontal addition to existing 1 story and (1) basement sfd. Proposed one additional residential unit. 201905160789 · Martinez & Sons Contractors | filed May 2019 · issued Nov 2021 | $850k | city record |
| Related permit | Residential fire sprinlker system, 37 heads, 4in fire water sercice 25lf. 202407116335 · Madden Plumbing LLC | filed Jul 2024 · issued Jul 2024 · done May 2026 | $40k | city record |
| Sprinklers | Installation of a new sprinkler monitoring system. 202501299322 · Crime Watch Security Sys Llc | filed Jan 2025 · issued Jan 2025 · done Jun 2026 | $6,534 | city record |
| Related permit | Stand alone permit retaining wall at front of residence. Repair and replace brick with concrete ref#2019-0516-0789. 202504144343 · cites 201905160789 · Martinez & Sons Contractors | filed Apr 2025 · issued Apr 2025 | $1,500 | city record |
| Revision | Revision to 201905160789. Stucco removal and replacement due to dryrot and broken diaphragm members. Remove simpson wswh 18x8 on line 2 (s-10) header rest on concrete shear wall and a35 framing clips. 202506168768 · cites 201905160789 · Ohana Renovations INC | filed Jun 2025 · issued Jun 2025 | — | city record |
| Electrical | Unit # 817 a lyon street: 1 service panel, 6 kitchen circuits, 2 bathrooms, 1 garbage dis. , 1 kitchen islands, 2 bedrooms, and one living room, and 20 lights. E20231116658 | Nov 16, 2023 → Apr 10, 2026 | — | |
| Electrical | Unit #817 lyon: 1 service panel, 1 service drop, 1 kitchen, 6 circuits, 3 bath rooms, 1 garage and 1 garbage disposal, 1 kitchen island, 3 bedrooms and 1 living room circuits. 20 lights. E20231116656 | Nov 16, 2023 → Apr 10, 2026 | — | |
| Electrical | To renew e20231116658 for change of contractors: unit # 817 a lyon street; 1 service panel, 6 kitchen circuits, 2 bathrooms, 1 garbage dis. , 1 kitchen islands, 2 bedrooms, and one living room, and 20 lights. E20250306731 | Mar 6, 2025 → Apr 10, 2026 | — | |
| Electrical | To renew e20231116656: unit #817 lyon; 1 service panel, 1 service drop, 1 kitchen, 6 circuits, 3 bath rooms, 1 garage and 1 garbage disposal, 1 kitchen island, 3 bedrooms and 1 living room circuits. 40 lights. E20250306733 | Mar 6, 2025 → Apr 10, 2026 | — | |
| Electrical | Online electrical permit: 60 of buildings of 6 dwelling units or less. Installation of a sprinkler monitoring system. E202512037514 | Dec 3, 2025 → Dec 19, 2025 | — | |
| Electrical | Ref: witness test fee for e202512037514. EW202512191641 | Dec 19, 2025 → Dec 19, 2025 | — | |
| Plumbing | Renewal of permit no pm20231120130. Final inspection, 2 mini splits. PM20241206411 | Dec 6, 2024 → Dec 9, 2024 | — | |
| Plumbing | Work category: 4pb; renewal of expired permit pw20241213770. Installation of overhead wet sprinkler system, includes underground service. Ref pa 202407116335. PW20251218391 | Dec 18, 2025 → Jan 13, 2026 | — | |
| Plumbing | To renew pp20231116066: to obtain final inspection (unit #a - 2 bathrooms, 1 mini split, 1 tankless water heaters and 1 kitchen. ). PP20260331264 | Mar 31, 2026 → Apr 16, 2026 | — | |
| Plumbing | To renew pp20231116065: to obtain final inspection (2 bathrooms, 1 mini split, 1 tankless water heaters and 1 kitchen. Add subsoil drainage. ). PP20260331265 | Mar 31, 2026 | — |
1 other permit on this lot during the project, not counted
| Other | To obtain final inspection for work approved under 201903256118. All work is complete. 202506168770 | filed Jun 2025 · issued Jun 2025 | — | city record |
These permits also cite 201903256118, which the city filed before our records begin.
Trade permits show what work was done and when; the city does not record who pulled them.
- Lot
- block 1150, lot 003
- Why we call it an ADU
- Two independent model reviewers agreed the permit creates an ADU: “"vertical & horizontal addition to (e) 1 story and (1) basement sfd. proposed one additional residential unit." Existing units: 1 → Proposed units: 2; 1 family dwelling → 2 family dwelling”