General Contractor · Northern California
Built plumb.Built once.
Commercial construction across the Bay Area since 1971. Priced with precision, sequenced without drama, and handed over on the day we said we would.
Established
1971
Projects
1,240+
EMR
0.58
On time
98.4%
55
Years building
Since 1971
1,240+
Projects delivered
Across 9 counties
38M
Square feet
Ground-up and renovation
0.58
EMR safety rating
Industry avg. 1.00
Who we are
Great buildings
start with people
who give a damn.
Plumbline has been employee-owned since 1994. The people estimating your project are the same people standing on the slab when it pours, and they carry the outcome personally.
We price it before we promise it.
Preconstruction isn't a formality — it's where the budget is actually won. Our teams estimate against real subcontractor pricing, not square-foot averages.
The superintendent never changes.
Whoever walks your site on day one walks it on the last day. Continuity in the field is the single biggest predictor of a clean closeout.
Nothing gets buried quietly.
Field conditions, cost exposure, schedule slip — you hear it from us the day we find it, with options attached. Bad news doesn't improve with age.
Portfolio
Five sectors.
One standard.
We build where the constraints are hardest: occupied campuses, tight urban infill, and buildings the public pays for and never stops using.
Expertise
How a
building
goes up.
Five stages, each one closing out risk before the next begins. Nothing moves forward on optimism.
Preconstruction
Cost variance target: under 3%We price the drawings before they're finished. Constructability review, long-lead procurement and a cost plan you can actually hold us to.
Design–Build
Single-source accountabilityOne contract covering design and construction. Fewer seams to argue about, and a single team carrying the schedule from concept to occupancy.
Virtual Design
BIM LOD 400 coordinationEvery trade modelled and clash-detected before a single beam is fabricated. The expensive surprises get found on a screen, not in the field.
Prefabrication
Up to 40% faster installationBathroom pods, MEP racks and exterior panels assembled indoors under controlled conditions, then installed once, correctly, on site.
Build & Close
98.4% on-time completionDaily field reporting, a live schedule you can see, and a closeout package delivered before the last punch item is signed.
Start a project
Bring us the
hard one.
Send us the drawings, the site constraints, and the date it has to open. We will tell you what it costs and whether we believe the schedule — before you sign anything.
General enquiries
Mon–Fri, 7am–5pm PT
Licensing
CSLB #482911
Bonded & insured