Updated: Jan 27, 2026
Location and Projects
Address
937 Harrison St, San Francisco, CA, 94107
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21st Century Home Improvement Photos
21st Century Home Improvement
21st Century Home Improvement Painting and Roofing is a family owned and operated, licensed, and insured general contractor with more than 30 years experience in the home improvement industry. We operate throughout the Bay Area, including San Francisco, Marin, Alameda, Contra Costa, and San Mateo counties. Our main office is in San Francisco.
Our goal as a company is to serve the home improvement needs of homeowners by providing high quality, long lasting work, and professional service. Our clients demand high-quality work that will serve them well over the long term. One of our greatest strengths as a company is the wide range of home improvement services we offer. These include interior and exterior painting, roofing, window replacement, carpentry, remodeling, vinyl siding, and seismic retrofitting. Our diversity is a major plus for our customers, especially those undertaking projects involving several types of work. It allows our clients to avoid searching for two or three reputable contractors they feel comfortable with, dealing with the often conflicting schedules of each, and paying the associated overhead and mark-up for each company.
From BuildZoom: 21st Century Home Improvement, 937 Harrison St, San Francisco, CA holds a Renovation license and 3 other licenses according to the Environmental Protection Agency license board.
Their BuildZoom score of 105 ranks in the top 8% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring 21st Century Home Improvement, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
21st Century Home Improvement 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
Drywall
Interior Plaster
Flatwork Concrete
Foundations
Other Concrete
Gutters and Flashing
Industrial Renovation
Hotel Renovation
Warehouse Renovation
Small Multi-Family Remodel ...
Whole Home Remodel
Addition
Vertical Addition
Horizontal Addition
Vertical and Horizontal Add...
Attic Remodel
Single Room Remodel
Cosmetic Remodel
Large Multi-Family Remodel ...
Healthcare Facility Renovation
21st Century Home Improvement Contact Information
Phone Number: (415) 902-8868
Address: 937 Harrison St, San Francisco, CA 94107
21st Century Home Improvement San Francisco
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
21st Century Home Improvement has a BuildZoom score of 105, which places them above 92% of 336,931 contractors in California.
Activity
|
8 projects
|
2025 |
|
11 projects
|
2024 |
|
12 projects
|
2023 |
Our building permit records indicate that 21st Century Home Improvement has worked on at least
31.0 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
|
3 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that 21st Century Home Improvement mostly works on
kitchen remodel
projects.
Pricing
|
3 projects
|
< $5k |
|
16 projects
|
$5k-$20k |
|
9 projects
|
$20k-$50k |
|
1 project
|
$100k-$250k |
|
2 projects
|
$250k-$500k |
The typical size of their permits is approximately $15,000. This graph shows the distribution of these job values.
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.
Building Permits by 21st Century Home Improvement
This is a sample of this contractor's permits. Click here to access their complete permit history.
1/f: addition 1-family room 1/2-bath laundry room stairs to 2/f; 2/f: remodel kitchen bathroom in-fill north side; 3/f: remodel bathroom; rebuild side stairs; addition new patio
Valuation:
$460,000
Permit #:
202402266585
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Repair dry rot siding to both side walls and back wall of home install new hardie sidng approx 500 sqft at back of building. replace (3) windows in back and side with new vinyl windows to (e) opening no structural changes (all work not visible from the street)
Valuation:
$30,000
Permit #:
202402155997
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Replace two windows in-kind in same location. st visible aluminum. replace front stucco & dry rot around front stairs approx. 300 sqft. repair front stair steps & dry-rot less than 50% non structural
Valuation:
$27,100
Permit #:
202412106515
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$25,000
Permit #:
202505015626
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
1/f: addition 720 sf living space. entire house remodel. rewire electricity throughtout the house. 65 lights 30 switches 70 receptacles 3 fans 1 dishwasher 1 garbage disposal 1 microwave
Valuation:
N/A
Permit #:
E202403223271
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$20,000
Permit #:
202503253009
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
1.install vinyl siding back of home (unvisible) :2. replace 5 vinyl window in back (unvisible) replace 2 aluminum window in front (visible) 3. remodel kitchen and 2 bathrooms
Valuation:
$72,000
Permit #:
202201196231
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Replace (8) windows in back of home with new vinyl windows. not visible from street. install new hardie board siding to back wall approx. 400 sq ft. no structural changes. u = 0.30 max
Valuation:
$20,000
Permit #:
202309146570
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$110,000
Permit #:
202210073978
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Revision to pa #2024-0226-6585 vault ceilings at living room
Valuation:
$5,000
Permit #:
202504083976
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Repair & replace stucco and dryrot in front. in-kind. around 500 sqft. replace 2 windows in-kind street visible. max u-factor 0.30
Valuation:
$19,700
Permit #:
202403067225
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Install t1-11 wood siding(replace/repair in kind) to west wall of building only. (left side) no structural change
Valuation:
$12,000
Permit #:
202301170236
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Revise 202401174146: kitchen remodel replace all kitchen cabinets replace sheetrock wall surfaces. sheetrock replaced
Valuation:
$15,000
Permit #:
202402166067
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Replace four windows in-kind (rear side -non visible from the street) remodel shower pan only
Valuation:
$21,000
Permit #:
202305308817
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$10,000
Permit #:
202508143072
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$25,000
Permit #:
202301170242
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$110,000
Permit #:
202210073976
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Unit #8: replace kitchen countertop & cabinet. replace bathroom tile. no structural work - no wall/framing modificaiton
Valuation:
$35,000
Permit #:
202204061730
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Bpa for replacement of (3) street-facing windows (primary façade) with wood windows (no vinyl allowed); replacement of 3 (e) windows at rear of property with vinyl windows (not facing prow); no other work to be performed under this permit
Valuation:
$6,500
Permit #:
201903195697
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Re-roofing: remove and replace roofing material existing roofing material (in-kind)
Valuation:
$17,000
Permit #:
202301170240
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
21st Century Home Improvement Reviews
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Verified License
BuildZoom confirmed this contractor's license
21st Century Home Improvement License info
Verified License
| License # | NAT-60365-3 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for 21st Century Home Improvement at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 682929 |
| Status | Active |
| State | California |
| Type | General Building, Roofing, Painting And Decorating |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for 21st Century Home Improvement at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 619021 |
| Status | Inactive |
| City | Butte County |
| Type | Contractor |
- According to the Butte County, CA, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for 21st Century Home Improvement at the Butte County, CA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-60365-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- According to the United States Environmental Protection Agency, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for 21st Century Home Improvement at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
1.7K
Permits
- Building permit records show that 21st Century Home Improvement has worked on 1744 permitted projects.