Ed Asuncion owns the company and does the work himself. In many cases a tankless conversion can reuse your existing gas line — the part that usually blows up the price in an old Alameda house.
Residential plumbing in Alameda's older housing stock, plus maintenance for commercial properties.
Old tank pulled, new Navien or Rinnai tankless set, with a dedicated gas line sized and permitted properly. About one a month, year in year out.
Straight tank replacements, relocations out of crawl spaces, and 50-gallon heat-pump water heaters for owners going electric.
Galvanized replaced with copper, partial repipes under the house in copper or PEX, and new water mains run from the meter.
Rusted gas line replaced, CSST and black iron run to appliances, earthquake gas shut-off valves fitted and tested.
Toilets and faucets repaired or replaced, appliances that touch water plumbed in, bathroom and laundry remodels.
Leaks found and fixed, small drain cleaning, and ongoing maintenance for commercial properties.
In Alameda's single-family Victorians — the houses this shop works in most — the expensive part of going tankless is usually not the unit. It is running a new gas line across an old house.
“I eventually discovered that, in many cases, a Noritz unit allows me to keep the same gas line.” — Edward Asuncion, owner, in a published contractor profile
Bonafide Plumbing Company was established in 2007. Edward Asuncion has been in the plumbing industry for 30 years — first while serving in the Navy, then with two San Francisco Bay Area plumbing companies — before venturing out on his own to serve Alameda and the surrounding East Bay. Stephanie Asuncion runs the office; it is a two-name business, and the owner is the one under your house.
The state license, CSLB #908376, is active and held in sole ownership, with a $15,000 bond through American Contractors Indemnity. Public permit records show 95 permitted jobs, twenty of them in the last three years, and the recent ones are almost all in Alameda.
Published reviews, quoted as written.
He is the real deal! He discovered a hidden leak in our three-story house…
Gregory S. · March 2026Bonafide Plumbing has been my first call for any plumbing issue since I bought my first house in 2021. Since then, I've called Ed, the owner of Bonafide, several times…
Dacyl A. · November 2025Ed is my hero. I used to be neighbors with Ed and his amazing wife Steph. A great reliable neighbor is hard to come by so when I moved into my new place and broke my sink, I knew…
Tu-Anh N. · August 2025Alameda first — that is where nearly every permit is — and the surrounding East Bay communities. Consumers' Checkbook lists the service area as Alameda County.
Call the shop during service hours, or leave your details and get a call back.
| Service, Mon–Fri | 8:00 AM – 5:00 PM |
| Office, Mon–Fri | 9:00 AM – 5:00 PM |
| Weekends | Hours vary — call to ask |