1
Darren Lee
Based in San Francisco
6 home addition permits in SF, latest Aug 2026, median permit value $533k · addition, deck, interior remodel
licensed 33 yrs
Active · B · #672385 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Home addition contractors in San Francisco, CA
31 contractors have addition permit records in San Francisco. CSLB license data dated Oct 16, 2026.
Which license do you need?
B license required. An addition needs a B (General Building) contractor. A B-2 may not touch footings, foundations, load-bearing walls or roof structure, and every addition does.
Do you need a permit?
Check with San Francisco first. Section 311 notice gives owners and residents within 150 feet, and Registered Neighborhood Groups, 30 days to ask the Planning Commission for Discretionary Review of your project.
Source: San Francisco Planning, Oct 18, 2026
Cost. Half of addition permits declared $150k to $670k, not total project cost. Details
25 of 31 with addition permits
Source: DataSF permits, 24 months to Oct 18, 2026.
Sorted by San Francisco home addition permits in the last 24 months, then years licensed. 6 more have addition permit records and aren't shown. How we rank.
31 contractors on this list pulled home addition permits in San Francisco in the last 24 months, 74 permits in all (DataSF, matched on license number; CSLB file dated Oct 16, 2026). In most of the city, adding a story triggers Section 311 notice, which gives neighbors within 150 feet 30 days to ask the Planning Commission for Discretionary Review (SF Planning, checked Oct 18, 2026).
2
Ren Lei Construction Co Inc
Based in San Francisco
5 home addition permits in SF, latest Mar 2026, median permit value $483k · addition, bath, kitchen
licensed 34 yrs
Active · B · #635360 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
3
C H Burnham Inc
Based in San Francisco
4 home addition permits in SF, latest Sep 2026, median permit value $270k · addition, interior remodel, bath
licensed 15 yrs
Active · B · #965331 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
4
At6 Architecture + Design Build
Based in San Francisco
3 home addition permits in SF, latest Apr 2026, median permit value $189k · addition, bath, interior remodel
licensed 53 yrs
Active · B · #283485 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
5
Planart Construction Corp
Based in San Francisco
3 home addition permits in SF, latest Sep 2026, median permit value $727k · addition, interior remodel, bath
licensed 16 yrs
Active · B · #942728 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
6
AMS Acropolis Construction Incorporated
Based in San Francisco
3 home addition permits in SF, latest May 2026, median permit value $211k · addition, deck, flooring
licensed 8 yrs
Active · B · #1034015 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
7
Fog Horn Builders Inc
Based in San Francisco
2 home addition permits in SF, latest May 2025, median permit value $108k · addition, bath, deck
licensed 28 yrs
Active · B · #749698 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
8
Jeff King & Company Inc
Based in San Francisco
2 home addition permits in SF, latest Jun 2026, median permit value $754k · interior remodel, addition, garage
licensed 26 yrs
Active · B · #772547 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Workers' comp policy ends Oct 21, 2026. Ask for the renewal certificate.
9
Kenneally Construction Inc
Based in San Francisco
2 home addition permits in SF, latest Apr 2026, median permit value $328k · addition, deck, bath
licensed 26 yrs
Active · B · #773788 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
10
Keegan Construction Incorporated
Based in San Francisco
2 home addition permits in SF, latest May 2026, median permit value $848k · addition, accessibility, bath
licensed 25 yrs
Active · B · #792673 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Show #11 to 25
11
MRCC
Based in San Francisco
2 home addition permits in SF, latest Aug 2026, median permit value $530k · interior remodel, addition, bath
licensed 23 yrs
Active · B · #821253 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
12
McMahon Construction LLC
Based in San Francisco
2 home addition permits in SF, latest Jun 2026, median permit value $199k · addition, bath, demolition
licensed 23 yrs
Active · B · #823609 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
13
S L M Development Inc
Based in San Francisco
2 home addition permits in SF, latest Sep 2026, median permit value $370k · addition, bath, flooring
licensed 22 yrs
Active · B · #841898 · Bond ✓ · Workers' comp via leasing · Verify on CSLB
14
Abbeyside Construction Inc
Based in San Francisco
2 home addition permits in SF, latest Sep 2026, median permit value $744k · addition, bath, kitchen
licensed 21 yrs
Active · B · #849012 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
15
Thompson - Suskind L P
Based in San Francisco
2 home addition permits in SF, latest May 2026, median permit value $539k · addition, flooring, interior remodel
licensed 21 yrs
Active · B · #860556 · Bond ✓ · Workers' comp via leasing · Verify on CSLB
16
Cardea Building Co
Legal name: Dimension Design Group · Based in San Francisco
2 home addition permits in SF, latest Aug 2026, median permit value $323k · addition, bath, deck
licensed 21 yrs
Active · B · #860686 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
C-6 Cabinet, Millwork, Finish Carpentry
17
Saturn Construction Co
Based in San Francisco
2 home addition permits in SF, latest Sep 2026, median permit value $763k · addition, adu, bath
licensed 21 yrs
Active · B · #861233 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
18
Devlin / MC Nally Construction
Based in San Francisco
2 home addition permits in SF, latest Jun 2026, median permit value $260k · addition, flooring, interior remodel
licensed 19 yrs
Active · B · #896044 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Workers' comp policy ends Nov 30, 2026. Ask for the renewal certificate.
19
O Donoghue Construction Inc
Based in San Francisco
2 home addition permits in SF, latest May 2026, median permit value $1.3M · addition, adu, deck
licensed 18 yrs
Active · B · #917704 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
20
Bay C T Construction Inc
Based in San Francisco
2 home addition permits in SF, latest Oct 2026, median permit value $229k · addition, bath, flooring
licensed 18 yrs
Active · B · #922224 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
21
Burdell Construction Inc
Based in San Francisco
2 home addition permits in SF, latest Sep 2026, median permit value $405k · addition, bath, deck
licensed 17 yrs
Active · B · #938610 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
22
Keightley Builders Inc
Based in San Francisco
2 home addition permits in SF, latest Jun 2026, median permit value $143k · addition, garage, bath
licensed 15 yrs
Active · B · #965843 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
23
Bay Concept Builder Group
Based in San Francisco
2 home addition permits in SF, latest Apr 2026, median permit value $1.2M · addition, bath, deck
licensed 10 yrs
Active · B · #1018594 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
C-10 Electrical
24
Perez Construction LLC
Based in San Francisco
2 home addition permits in SF, latest Jul 2026, median permit value $119k · interior remodel, addition, bath
licensed 9 yrs
Active · B · #1024474 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
25
Winwin Construction Inc
Based in San Francisco
2 home addition permits in SF, latest Jan 2025, median permit value $220k · addition, bath, interior remodel
licensed 8 yrs
Active · B · #1031942 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Payment doesn't change the order. Business build-out? See commercial GCs. Each card shows CSLB data from the file dated Oct 16, 2026. Verify live on CSLB.
Permits in San Francisco
Permits go through San Francisco Department of Building Inspection (DBI), Permit Center, 49 South Van Ness. Put in the contract who pulls the permit.
Most San Francisco kitchen and bath remodels are reviewed over the counter at the Permit Center, 49 South Van Ness. A remodel that changes the floor plan or removes walls needs two sets of plans, and registered contractors can file in-kind, non-structural kitchen and bath work through PermitSF with no plans.
Source: San Francisco Department of Building Inspection, checked Oct 18, 2026
DBI gives over-the-counter review only to projects needing under 1 hour of plan review; plan on 2 to 8 hours at the counter. Bigger jobs go to in-house electronic plan review, and permit fees run about 3 to 4.5% of construction cost.
Source: San Francisco Department of Building Inspection, checked Oct 18, 2026
An owner can pull their own SF building permit, but a tenant can't unless acting as the owner's or contractor's agent. An agent's authorization must be dated by the owner within 30 calendar days.
Source: San Francisco Department of Building Inspection, checked Oct 18, 2026
If your building is 45 years old or older, SF Planning asks you to see a Historic Preservation Specialist at the Planning Counter (628-652-7300). Exterior work on an Article 10 landmark or in a historic district also needs a Certificate of Appropriateness.
Source: San Francisco Planning, checked Oct 18, 2026
What a addition job costs
Half of the 306 addition permits declared between $150k and $670k (median $308k).
Declared permit valuation, not total project cost
San Francisco permits from the last 24 months to Oct 18, 2026. The value is what the applicant wrote on the permit, so it is not what a homeowner paid in total. Source: DataSF. For an estimate by size and finish, use the home construction cost calculator.
Planning an accessory dwelling unit? That has its own site: Bay Area ADU Builders.
B or B-2: which license fits your job
Both classes can act as your prime contractor. A B-2 is limited to remodels of an existing wood-frame house. If your plan changes the structure, look for a B.
| Job | B General Building | B-2 Residential Remodeling |
|---|---|---|
| Kitchen or bath remodel in an existing house | Yes | Yes, when the contract covers 3 or more unrelated trades |
| Addition or new rooms | Yes | No |
| Moving or removing a load-bearing wall | Yes | No |
| New home | Yes | No |
| Commercial or tenant work | Yes | No |
Sources: CSLB, class B and class B-2, checked Oct 18, 2026. More in B vs B-2.
California rules for your contract
A down payment on a home improvement contract can't be more than $1,000 or 10% of the price, whichever is less. No progress payment can be more than the work done or materials delivered.
Source: California B&P Code 7159.5, checked Oct 18, 2026
Work under $1,000 in total (labor and materials) that needs no building permit doesn't require a license. The exemption doesn't apply if the person advertises as a contractor, has employees, or splits a job to stay under the limit.
Source: California B&P Code 7048, checked Oct 18, 2026
Every licensed contractor must keep a $25,000 contractor's bond on file with CSLB. That has been the amount since January 1, 2023.
Source: CSLB, bond requirements, checked Oct 18, 2026
A contractor with employees must carry workers' comp. Until 2028, a B contractor with no employees can legally file an exemption, so check which one yours did. From January 1, 2028, a workers' comp certificate is required for every license.
Source: CSLB, workers' compensation, checked Oct 18, 2026
Complaint history isn't in CSLB's free data files, so we don't show it. Check complaints on CSLB before you sign.
Home addition contractors near San Francisco
Other project types in San Francisco
How this list is built
City permit records from DataSF (the San Francisco open data portal), matched to each contractor by license number, covering the last 24 months. Checked Oct 18, 2026. A contractor is listed only with evidence for addition work: a permit record whose description matches, or a source the contractor gave us.
License class, status, dates, bond and workers' comp come from CSLB's public data files: Master file Oct 16, 2026, workers' comp file Oct 17, 2026, processed Oct 18, 2026. Each card links to that license's live CSLB record. Full method.