01
Response windows we actually commit to
Commercial service partners get defined emergency arrival windows. We would rather quote a realistic window than a flattering one.
Family-owned since 2014
A commercial contractor's discipline, at a family shop's scale.
Daso Plumbing was started to fill a gap on the Peninsula: a plumbing contractor that runs with corporate-level safety, communication and documentation, without the corporate distance.
Headquarters · Belmont, CA
570 Marine View Ave, Unit-F
Who we are
Quality service, and the paperwork to prove it.
We are focused on providing high-quality plumbing service to clients across the San Francisco Peninsula. As your trusted family plumber, we earn confidence by understanding what a property actually needs and delivering a solution that holds up — then documenting it.
Since 2014 we have completed more than 1,600 projects, from single fixture replacements in Belmont to ground-up estate rough-ins in Woodside and multi-phase tenant improvements for facilities across the Peninsula. The same crews and the same standards cover both.
Every technician works to California building code, municipal protocol and our own quality checks. Sites stay clean. Prices are written down before the work begins. If conditions change mid-job, you hear about it before we proceed, not on the invoice.
How we operate
Four things we hold ourselves to.
These are the commitments we make to property groups, general contractors and homeowners — the same list, regardless of job size.
02
A photo record of every job
Crews log high-resolution photos of each diagnostic, pipe layout and completed repair, so facility managers get clean visual evidence for approval files.
03
Efficient systems by default
Heat pump water heaters, recirculation balancing, low-flow commercial valves and gray water systems — specified because they cost less to run, not as an upsell.
04
Clean sites, every day
Occupied homes and operating facilities get protected floors, contained work areas and a site left usable at the end of each day.
Standards
What you are actually buying.
Plumbing is bought on trust, so here is the paperwork behind it. Every claim on this page can be checked before you hire us.
1
License
California State License #1037326, Class C-36, in active standing and verifiable through the CSLB.
2
Bonded & insured
Contractor bond in place through a licensed surety, plus commercial and residential liability coverage.
3
Code compliance
Work performed to California building code and municipal protocol, with permits pulled where the scope requires them.
4
Photo documentation
Every diagnostic, pipe layout and completed repair is photographed and logged — useful for facility files and insurance.
Our work
See all projects
Twelve years of it, photographed.
Every image below is a Daso crew on a Peninsula property. Rough-ins, manifolds, heat pumps and repipes — the parts of the job that get covered up before anyone sees them.
Woodside, CA
Custom Estate Framing
Ground-up custom luxury residence with active framing and Daso fleet dispatch.
San Mateo, CA
Main Water Service & Backflow
Outdoor main water line copper soldering and backflow valve installation.
Belmont, CA
Sewer Lift Station Trenching
Deep exterior trench excavation for a sewer lateral lift station and basin installation.
Atherton, CA
Freestanding Soaking Tub
Architectural master bath freestanding soaking tub with floor-mounted fixtures on custom marble.
South San Francisco, CA
Commercial Overhead Piping
Daso Plumbing crew on extension ladders fitting overhead drainage and seismic gas runs.
San Carlos, CA
Commercial Cast-Iron Rough-In
Heavy cast-iron DWV waste piping and copper risers framed in steel studs.
Coverage
Sixteen cities, one crew base.
We run out of Belmont, which puts every city we serve inside a short drive — the difference between a same-day look and a next-week appointment. Each city page covers the building stock, permitting and water conditions specific to that jurisdiction.
Crew base
570 Marine View Ave, Unit-F
Belmont, CA 94002
Belmont, CA 94002
Sixteen Peninsula cities, all within a short drive of the yard — Atherton and Hillsborough to the north, Santa Clara and San Jose to the south.
570 Marine View Ave, Unit-F, Belmont, CA 94002
Get directions →
Next step
Talk to the people who will do the work.
Send the scope, the address, or just the problem. A licensed plumber reviews it and comes back with a written price — not a range.