BuilderDuty Inc. Millbrae, California

The team behind
your team,
at every stage of the build.

BuilderDuty Inc. is a commercial construction support company based in Millbrae, California. Our four divisions cover pre-construction planning, general contracting, subcontracting, and bids and estimates. Whatever stage your project is at, you get a partner who shows up prepared and finishes what they start.

01
Pre-construction services

Plan it right before you build it.

Commercial development site during early planning
Scope review, budgets, schedules, and permits, handled before ground breaks.

The most expensive mistakes in construction happen before the first crew arrives.

Our pre-construction division gives owners, developers, and contractors a plan they can trust. Scope that is fully understood. Budgets that hold. Schedules that reflect how the work will really go. You start the build already ahead, with fewer questions waiting on site and fewer change orders waiting in your inbox.

  • Scope review and constructability input
  • Preliminary budgets and cost planning
  • Schedule development and phasing
  • Subcontractor and vendor prequalification
  • Permit and documentation coordination
02
Commercial general contracting

A general contractor who treats your name like their own.

General contracting leadership on a commercial construction site
Planning, coordination, field execution, and turnover, owned end to end.

Because ours is on it too.

BuilderDuty leads commercial construction projects with tight coordination, honest reporting, and a crew that solves problems on site instead of sending them back to you. We take ownership of the day-to-day demands that decide whether a project succeeds, and we keep quality, schedule, and communication at the center of every decision. Fewer surprises. Cleaner handoffs. A build you are proud to show.

  • Full commercial project oversight
  • Site coordination and schedule management
  • Trade and vendor supervision
  • Quality control and punch-list closeout
  • Client reporting and execution updates
03
Commercial subcontracting

Every GC has a story about the sub who showed up unprepared.

Trade crew reviewing plans on a commercial site
Scope-specific trade support that keeps the field moving.

We are the other story.

Our subcontracting division arrives prepared, communicates before problems grow, and performs to the standard the job demands. We reduce friction between scopes, keep production moving, and give general contractors and superintendents one less thing to chase. When you put BuilderDuty on your schedule, that scope stops being something you worry about.

  • Scope-specific trade support
  • Field-ready coordination with GCs and supers
  • Schedule-conscious execution
  • Clean communication across teams
  • Quality-focused installation support
04
Construction estimating and bid support

Bids that go out late do not win. Bids that go out wrong cost you twice.

Estimating team working through bid documents
Takeoffs, scope pricing, and proposal packages, ready when you need them.

We make sure yours do neither.

Our estimating team delivers accurate quantity takeoffs, scope-based cost estimates, and organized proposal packages fast enough to meet real deadlines. You chase more opportunities, price them with confidence, and stop pricing jobs at midnight. More bids out the door, and better ones.

  • Detailed quantity takeoffs
  • Scope-based cost estimating
  • Bid support and proposal preparation
  • Budget planning for commercial work
  • Organized estimate packages for faster review
Start here

You build.
We handle the rest.

Tell us what you are working on and which stage it is at. A real person on our team reads every inquiry and comes back with a straight answer about how BuilderDuty can help. No pitch deck. No runaround.

Start the conversation Book a consultation Monday to Friday · 8:00 AM to 6:00 PM · One business day reply