General contractor San Francisco, CA Limited Liability

McMahon Construction LLC

Active License #823609 B General Building · San Francisco, CA

CSLB lists license #823609 as active in its file dated Oct 16, 2026. CSLB shows a $25,000 contractor bond with American Contractors Indemnity Company and workers' comp coverage through Omaha National Casualty Company (policy to Aug 3, 2027).

CSLB license age: 23 yrs 1 mo; since Sep 7, 2003
Expires: Oct 31, 2027
Bond: $25,000 bond; American Contractors Indemnity Company
Workers' comp: Omaha National Casualty Company

14 city permits in 24 months · latest Sep 10, 2026

CSLB records dated Oct 16, 2026 checked Oct 18, 2026 Verify live on CSLB

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License record

Status: Active CSLB status code: CLEAR
Class: B · General Building
Business type: Limited Liability
Issued: Sep 7, 2003 CSLB license age: 23 yrs 1 mo as of the file date
Contractor bond: $25,000 bond American Contractors Indemnity Company, since Jan 1, 2023
Workers' comp: Omaha National Casualty Company Aug 3, 2026 to Aug 3, 2027 · WC file dated Oct 17, 2026
CSLB last updated this record: Sep 9, 2026

Personnel of record

Emmet MC Mahon Responsible Managing Member

As listed in CSLB's personnel file dated Oct 17, 2026. Personnel of record qualify the license. The file does not show who owns the business.

What the permit record shows

We have permit records for San Francisco and San Jose only. Other Bay Area cities don't publish contractor names in a form we can read, so an empty list here says nothing about work elsewhere.

San Francisco permits (matched by license number)

14permits in 24 months

Residential: 9
Commercial: 5
Latest issued: Sep 10, 2026
Median permit value: $53,000

Permit descriptions that mention: Kitchen remodel (3), Bathroom remodel (3), Home addition (2)

Permits by declared value (14 with a value)

Under $50k 6
$50k to $250k 6
$250k to $1M 2
Over $1M 0

Latest permits (public permit numbers)

Permit	Issued	Type	Value
202609107866	Sep 10, 2026	Over-the-counter alterations permit	$170,000
202605080954	Jun 15, 2026	Bathroom remodel	$103,000
202605010518	May 1, 2026	Bathroom remodel	$30,000
202602256511	Feb 25, 2026	Kitchen remodel	$80,000
202601234423	Jan 23, 2026	Over-the-counter alterations permit	$166,000
202512121632	Dec 19, 2025	Over-the-counter alterations permit	$35,000
202510288307	Oct 28, 2025	Over-the-counter alterations permit	$50,000
202509306401	Sep 30, 2025	Over-the-counter alterations permit	$28,000
202509235954	Sep 30, 2025	Over-the-counter alterations permit	$10,000
202507312038	Aug 21, 2025	Over-the-counter alterations permit	$55,000

Over-the-counter alterations permit · $170,000 · Sep 10, 2026 Permit #202609107866
Bathroom remodel · $103,000 · Jun 15, 2026 Permit #202605080954
Bathroom remodel · $30,000 · May 1, 2026 Permit #202605010518
Kitchen remodel · $80,000 · Feb 25, 2026 Permit #202602256511
Over-the-counter alterations permit · $166,000 · Jan 23, 2026 Permit #202601234423
Over-the-counter alterations permit · $35,000 · Dec 19, 2025 Permit #202512121632
Over-the-counter alterations permit · $50,000 · Oct 28, 2025 Permit #202510288307
Over-the-counter alterations permit · $28,000 · Sep 30, 2025 Permit #202509306401
Over-the-counter alterations permit · $10,000 · Sep 30, 2025 Permit #202509235954
Over-the-counter alterations permit · $55,000 · Aug 21, 2025 Permit #202507312038

Look up a permit number on SF DBI

Source: DataSF building permits, checked Oct 18, 2026

Complaints and legal actions

CSLB lists complaint and legal-action disclosures on the license's page.

Check complaints on CSLB

Before you sign

Down payment. On a home improvement contract it can't exceed $1,000 or 10% of the price, whichever is less. B&P 7159.5
What this class covers. A B contractor's prime contract needs 2 or more unrelated trades (B&P 7057). B covers additions and structural work; a B-2 doesn't (CSLB class B-2).

Other licensed general contractors in San Francisco

Ranked by the published scoring rules on the methodology page.

Mission Home Remodeling Inc

Based in San Francisco

39 bath, 28 kitchen, 2 new homes · median permit value $35k · latest: kitchen, Oct 2026 (SF permits)

87 residential permits · licensed 5 yrs

Active · B · #1078954 · Bond ✓ · Workers' comp ✓ · Verify on CSLB

Active · B General Building · License #1078954, expires Jul 31, 2027 · Bond $25,000 ✓ · Workers' comp: State Compensation Insurance Fund, policy ends Dec 8, 2026 · Verify on CSLB

Request bids License details

Reliable Construction Inc

Based in San Francisco

30 bath, 17 kitchen, 1 addition · median permit value $27k · latest: kitchen, Sep 2026 (SF permits)

73 residential permits · licensed 13 yrs

Active · B · #983658 · Bond ✓ · Workers' comp: policy ended · Verify on CSLB

Active · B General Building · License #983658, expires May 31, 2027 · Bond $25,000 ✓ · Workers' comp: Insurance Company of the West, policy ended Oct 17, 2026 in CSLB's file; ask for the current certificate · Verify on CSLB

Workers' comp policy ends Oct 17, 2026. Ask for the renewal certificate.

Request bids License details

We Do Construction Inc

Based in San Francisco

39 bath, 18 kitchen, 1 addition · median permit value $36k · latest: kitchen, Oct 2026 (SF permits)

70 residential permits · licensed 4 yrs

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Active · B General Building · License #1096552, expires Sep 30, 2028 · Bond $25,000 ✓ · Workers' comp: State Compensation Insurance Fund · Verify on CSLB

C-36 Plumbing

Workers' comp policy ends Nov 14, 2026. Ask for the renewal certificate.

Request bids License details

Questions about McMahon Construction LLC

Is McMahon Construction LLC licensed?

Yes. CSLB lists license #823609 (B, General Building) as active in its file dated Oct 16, 2026. It was first issued Sep 7, 2003 and expires Oct 31, 2027. Check the live record on CSLB before you sign.

What is the CSLB license number for McMahon Construction LLC?

CSLB lists McMahon Construction LLC under license #823609, class B, in San Francisco, CA.

Is McMahon Construction LLC bonded and insured?

CSLB shows a $25,000 contractor bond with American Contractors Indemnity Company and workers' comp coverage through Omaha National Casualty Company (policy to Aug 3, 2027). Those are the bond and workers' comp records in CSLB's file dated Oct 16, 2026. Ask for its certificate of general liability insurance.

Who owns McMahon Construction LLC?

CSLB lists Emmet MC Mahon (Responsible Managing Member) as personnel of record. That file names the people who qualify the license. It does not show who owns the business. CSLB lists the business type as limited liability.

Where can I see CSLB complaint and legal-action records for #823609?

On license #823609's page on CSLB. It lists any complaint disclosures and legal actions CSLB publishes for the license.

Where can I read reviews of McMahon Construction LLC?

We don't host reviews. The links under the license details search for McMahon Construction in San Francisco on Yelp, Google, Houzz, BBB, Thumbtack and Angi, so you read them at the source.

Confirm or correct this page

For the business owner. Everything above comes from CSLB and city permit files. Send a correction and we check it against the source.

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