Larratt Bros Plumbing, Inc., San Francisco, CA

Approvals

✓ On the San Francisco authorized testers Phone matches its Google profile

San Francisco authorized backflow assembly testing companies, as of August 14, 2026. Being on this list means the utility lets the company file backflow test reports in its water system; it is not a state license.

Certified tester	Certificate
Brandon Dillon

Ask for the certificate number of the tester who will do your test, and check that your own water utility accepts reports from this company.

Call (650) 873-5794 Visit website More testers in California

Price reports

What a backflow test costs in San Francisco

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Published prices nationwide

$29.99 to $100 per assembly

$0$25$50$75$100$125

Based on 14 published prices · Read Oct 2026 Prices testing businesses list on their own websites, from our cost guide. Listed prices, not what people paid.

Every published price, with its source: what a backflow test costs.

Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.

What Larratt Bros Plumbing, Inc.'s website says

Services listed on Larratt Bros Plumbing, Inc.'s website, read October 11, 2026: general plumbing, water heaters and drain and sewer service. larrattbros.com

It says	Details	Page
Emergency service	Offered, it says (hours not stated)	larrattbros.com

Read on larrattbros.com on October 11, 2026 (1 page). This is what the business says about itself.

Where you will find Larratt Bros Plumbing, Inc.

These are the city pages close enough for this business to appear on.

Other backflow testers nearby

Business	Services	Distance
Cornely Company	Backflow Testing	under 1 mi
Ros Plumbing	Backflow Testing	under 1 mi
Arch Plumbing Inc	Backflow Testing	1 mi
Malcolm Plumbing & Mechanical	Backflow Testing	1 mi
Bay Area Mechanical and Engineering, Inc.	Backflow Testing	1 mi
Pacific Automatic Sprinkler Co.	Backflow Testing	1 mi

Questions about Larratt Bros Plumbing, Inc.

Is Larratt Bros Plumbing, Inc. approved to test backflow assemblies?

Larratt Bros Plumbing, Inc. is on the San Francisco authorized testers, as of August 14, 2026. That means the utility lets the company file backflow test reports in its system; it is not a state license. Ask for the tester's certificate number before the test.

What does Larratt Bros Plumbing, Inc. do?

Their listing covers backflow testing. Call to confirm the service you need, because offerings change.

What areas does Larratt Bros Plumbing, Inc. serve?

They are based in San Francisco, California, within driving distance of San Francisco, South San Francisco, Burlingame, Oakland, San Mateo. Service areas are set by the business, so confirm yours when you call.

How do I reach Larratt Bros Plumbing, Inc.?

Call (650) 873-5794. Their website is linked on this page.

Compiled from public records and public business information. Not an endorsement. Check licensing before you hire.

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