Updated: May 28, 2026
Location and Projects
Address
171 Lily St, San Francisco, CA, 94102
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BUILD SF Photos
BUILD SF Construction
BUILD SF, 171 Lily St, San Francisco, CA (Owned by: Simon Humphrey Gil Spark) holds a General Building license and 2 other licenses according to the California license board.
Their BuildZoom score of 116 ranks in the top 2% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring BUILD SF, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
BUILD SF Services
Start a project today:
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Architectural Drawings and ...
Demolition
Paving, Driveways, and Side...
Excavation and Grading
Other Site Work
Sea Walls
Drafting
Addition
Vertical Addition
Horizontal Addition
Vertical and Horizontal Add...
BUILD SF Contact Information
Phone Number: (415) 503-9443
Address: 171 Lily St, San Francisco, CA 94102
BUILD SF San Francisco
Quality
116
98th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
BUILD SF has a BuildZoom score of 116, which places them above 98% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that BUILD SF has worked on at least
2.0 projects over the past 2 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$100k-$250k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior remodel existing unit. 1st fl: bathroom remodel addition new fireplace. 2nd fl: new kitchen and primary bathroom. new fire place. refinish floors. general lighting improvements
Valuation:
$136,000
Permit #:
202404190387
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
92 - artist live/...
Repair fire damaged building per attached nov #201699821- replace back stair with full sprinkler system. addition habitable space @ ground floor - 2 bedrooms wet bar media room bathroom addition 1 bathroom on 3rd floor new bathroom & office on 4th floor. addition dormers per zoning admin admin bulletin# 3
Valuation:
$653,000
Permit #:
201612225780
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
One bathroom remodel. no walls moved or removed
Valuation:
$37,000
Permit #:
202106222913
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Replace exisiting brick foundation with new concrete foundation. replace concrete slab at same elevation
Valuation:
$100,000
Permit #:
201611183067
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Construct standard l shaped (n) concrete footing 12"x12 w/6 stem wall 6 min above grade. with #5 rebar at 12 center. replace existing framing & siding as req. to remediate dryrot. paint to match existing
Valuation:
$3,000
Permit #:
201803012627
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Exploratory demolition (structural) - place bin on street. remove plaster wall sections & concrete to expose structural elements for visual inspection by structural engineer. 25 sq ft feet total
Valuation:
$7,500
Permit #:
201801118410
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Third floor renovation adding dormers to create new fourth floor. with kitchen (n) roof deck at fourth floor. restoring building to (2) units
Valuation:
$100,000
Permit #:
201803214224
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Addition stucco to (e) north & west elevation ref 201805148991 201803214224 not visible from street
Valuation:
$50,000
Permit #:
201910073714
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
To obtain final inspection for pp#20170206704 & pp#20170112127
Valuation:
N/A
Permit #:
PP20191224251
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(1) shower pan inspection
Valuation:
N/A
Permit #:
PP20200117896
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 100a temp power ufer ground (1) receptacle
Valuation:
N/A
Permit #:
E201701122241
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
To renew pa# 201705317970 and 201608124948 for final inspection
Valuation:
$1
Permit #:
201812208936
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision to permit application #2014-1113-1376. new plans with altered layout with alterations to basement: new gyp board removal of non-brg walls alteration of wall btwn entry & garage. new fire-rated decor btwn garage & entry
Valuation:
$125,000
Permit #:
201501135654
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Interior remodel to ground floor: new stair bathroom laundry office media room skylight exterior rear doors. no expansion to building envelope. no alteration to front facade. compliance with maher ordinance no. 155-13 not required
Valuation:
$85,000
Permit #:
201407252195
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Ground floor conversion to habitable space with renovation to (e) second floor and (1) bike space. adding doors and windows to rear
Valuation:
$320,000
Permit #:
201805148991
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Convert (e) 55 sq. ft. utility room to habitable space new 17 sq. ft. addition under 2/f footprint relocate/remodel (e) kitchen relocate/remodel (e) bathroom new plumbing & electrical in kitchen & bathroom
Valuation:
$95,000
Permit #:
202008061282
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Water intrusion: removed water damaged trims drywall & insulation as needed. test for sources of water intrusion. repair areas where leak originate. mold prevention & remediation in 2 front bedrooms on 3rd floor. currently uninhabitable due to water damage and mold. test repaired areas
Valuation:
$8,000
Permit #:
202005127473
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Bathroom remodel kitchen remodel repair (e) sunroom porch replace windows @ porch replace doors to rear yard. no walls to be moved no change of building envelope. no change on walls
Valuation:
$78,000
Permit #:
201502178534
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
(n) bedroom full bathroom and laundry room at 1st fl. remodel kitchen bathroom living and dining areas at 2nd fl. includes removing walls at 2nd floor. replace 2 (e) rear windows at 1st fl. 2(n) skylights at 2nd fl
Valuation:
$110,000
Permit #:
201302210628
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision to pa# 201502178534: window replacement at rear porch - larger openings replace door with french doors. dining room - replace window with french door rear bedroom - replace (e) window-same size
Valuation:
$1
Permit #:
201503251801
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
BUILD SF Reviews
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Verified License
BuildZoom confirmed this contractor's license
BUILD SF License info
Verified License
| License # | 1049987 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for BUILD SF at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 985410 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for BUILD SF at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 850777 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for BUILD SF at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
116
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
35
Permits
- Building permit records show that BUILD SF has worked on 35 permitted projects.
BUILD SF Employees
JW
Jaak Henry Wassmuth
Sole Owner
KD
Kimball Diamond
Principal Project Management
SS
Simon Humphrey Gil Spark
Owner