Updated: Jun 01, 2026
Location and Projects
Address
2385 TIPPERARY AVE, South San Francisco, CA, 94080
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3N1 Construction Inc
Serving South San Francisco and the surrounding Bay Area, 3N1 Construction Inc specializes in residential remodels and home improvement projects. With 7 years of experience, the company delivers a range of construction services including kitchen and bathroom renovations, room additions, and interior updates. Projects featured in their portfolio include open-concept kitchen transformations, custom tile installations, and upgrades to living spaces to improve functionality and aesthetics. 3N1 Construction Inc works closely with homeowners to execute remodels tailored to each property’s layout and individual requirements. The company uses current building materials and construction methods that align with industry standards in the region. Their service area extends throughout communities in San Mateo County, providing expertise in both structural and cosmetic home renovations.
3N1 Construction Inc Services
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3N1 Construction Inc Contact Information
Phone Number: (415) 310-8878
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Address: 2385 TIPPERARY AVE, South San Francisco, CA 94080
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3N1 Construction Inc South San Francisco
Quality
102
89th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
3N1 Construction Inc has a BuildZoom score of 102, which places them above 89% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
3 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that 3N1 Construction Inc has worked on at least
9.0 projects over the past 3 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.
Experience
|
4 projects
|
Home Additions |
|
3 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that 3N1 Construction Inc mostly works on
home addition
and multi-room remodel
projects.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
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.
Addition new media room on 1/f. 2)install barsink in both new media room and (e) family room on 1/f. 3)remodel 2/f bathroom. 4)add a bedroom separation wall on 2/f of (e) rear addition
Valuation:
$47,571
Permit #:
202502190592
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Bathroom remodel with water fixture rearrangement. no wall removal. replace in kind. tiles vanity convert existing tub to standing showr with same footprint. move toilet to existing standing shower space with 30 wide and 24 clearance at front
Valuation:
$28,000
Permit #:
202501158368
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Remodel 2nd fl. bathroom in kind addition 2 wetbar counter outlet & nw 1st floor media room & light fixtures. 8 lights 6 switches 12 erceptacles 1 fan 1 range
Valuation:
N/A
Permit #:
E20250226392
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bathroom remodel with water fixture rearragement. no wall removal. replace in-kind: tiles vanity. convert existing tub to standing shower with same footprint. move toilet to existing standing shower space with 30"wide and 24 clearance at front
Valuation:
$20,552
Permit #:
202408269489
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Bathroom remodel in kind. provide 1 20amp dedicate circuit gfci outlet. 2 lights 2 switches 1 receptacle 1 fan
Valuation:
N/A
Permit #:
E202501159355
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bathroom remodel. provide 1 20amp dedicate circuit gfci outlet. 3 lights 3 switches 2 receptacles 1 fan
Valuation:
N/A
Permit #:
E202501159354
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition webar sink in 1st fl rear family room & new media room. remodel 2nd floor bathroom in kind
Valuation:
N/A
Permit #:
PP20250226774
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
In response to dbi complaint 202425913. addition new bathroom and remodel existing kitchen at 2/f. reconfigure existing bathroom at 3/f. no exterior work
Valuation:
$60,000
Permit #:
202408128454
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
2/f: remodel rear additional bathroom. replace in kind and no wall removal
Valuation:
$28,000
Permit #:
202501158370
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Infill @ 1st floor rear. addition 1 new family room. 2 new bedrooms 2 new baths & 2 new closets @ 1st floor. remodel (e) kitchen @ 2nd floor. relocate (e) bathroom & addition new bathroom @ 2nd floor. reconfigure interior stair case per plan. reconfigure rear yard staircase & remove lightwell staircase per plan
Valuation:
$160,000
Permit #:
202106011387
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Bathroom remodeling with water fixture rearrangement and 1 shower pan
Valuation:
N/A
Permit #:
PP20250115992
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install ventilation fan in 1st floor new media room
Valuation:
N/A
Permit #:
PM20250226776
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Upgrade main panel to 200 amp and addition subpanel for bathroom remodeling. 5 lights 4 switches 2 receptacles 1 fan 1 range
Valuation:
N/A
Permit #:
E202408266512
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel rear additional tub bathroom in kind
Valuation:
N/A
Permit #:
PP20250115993
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Whole house rewire. addition subpanel 50a in basement. addition power receptacles light fixturs in new bedroom in basement. new plugs lights switches
Valuation:
N/A
Permit #:
E202202178473
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Ref to building pa #202408128454: addition new 70 amp sub panel for 1 new bathroom and remodel 1 e) bathroom & e) kitchen
Valuation:
N/A
Permit #:
E202408136205
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel 1 (e) bathroom with tub addition 1 new bathroom with showerpanel relocate & remodel kitchen. addition new laundry room in garage
Valuation:
N/A
Permit #:
PP20220217176
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 60a sub to 2/f for kitchen & bathroom remodeling. whole house rewiing. install led recess light throughout the house
Valuation:
N/A
Permit #:
E202202178468
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair/add on west side of exterior wall for 7 hardie cement plank siding. (approx. 500 sq ft). extg wall with wood siding material
Valuation:
$3,000
Permit #:
202312051940
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Enclose center light court. relocate kitchen addition new full bathroom remodel bathroom addition 2 ndw skylights on 2nd fl addition media room 2 bedrooms full bathroom 1st fl replace furnace
Valuation:
$90,000
Permit #:
201812077749
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
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3N1 Construction Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
3N1 Construction Inc License info
Verified License
| License # | 1005965 |
| 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 3N1 Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
15
Permits
- Building permit records show that 3N1 Construction Inc has worked on 15 permitted projects.
3N1 Construction Inc Employees
KM
Ka Wang Mak
Sole Owner
KM
Ka Wang Mak
Rmo / Ceo / Pres