For GCs, owners & program managers
Invite us to bid your commercial mechanical project, in California or nationwide
We price and build large commercial HVAC, refrigeration, chiller, and boiler scopes as a union mechanical contractor: UA Local 250 member, PLA and prevailing-wage ready, with certified payroll and closeout documentation built in. Our home base is Orange County; for larger projects elsewhere we pursue the work state by state, with licensing, labor, bonding, and service coverage settled before we submit a number.
Scopes we bid
Portfolio-wide rooftop replacements and new installs with crane scheduling, curb adapters, controls, and closeout documentation.
Chillers, boilers, pumps, and piping: replacement, retrofit, and new plant work.
Walk-ins, reach-in programs, rack and remote-condensing systems for food retail and distribution.
Commercial water heater and boiler replacement for hotels, schools, healthcare, and multifamily.
Municipal, state, school, and federal facilities under PLA, prevailing-wage, or Davis-Bacon requirements.
Summer-window modernizations and campus-wide equipment replacement.
Temperature-critical spaces where documentation and uptime are non-negotiable.
Large-footprint RTU systems, heat, ventilation, and temperature-controlled storage.
How an out-of-state bid works with us
- Screen. We review the plans, specs, bid date, wage and labor requirements, and bonding terms.
- Confirm the path. Licensing in the project state, business and tax registration, insurance endorsements, and surety authorization.
- Plan labor. Core crew plus local referral under the applicable agreement or PLA, prevailing wage, or Davis-Bacon requirements.
- Price. Takeoff, equipment quotes and lead times, rigging, mobilization, permits, and a clear list of clarifications and exclusions.
- Deliver. Submittals, coordination, startup, commissioning support, and closeout documents.
- Support. Warranty and maintenance coverage explained up front, with equipment records in the DaVinci Portal.
What to send with a bid invitation
- Drawings and specifications, with all addenda
- Bid date, bid form, and submission method
- Project location and schedule constraints
- Prevailing wage, PLA, or Davis-Bacon requirements
- Bond and insurance requirements
- Site access and logistics (roof, crane, hours)
- Owner or GC contact for questions
We respond to qualified invitations promptly and will tell you early if a project isn't a fit.
Read before you invite us
Bid-project FAQ
Do you bid projects outside California?
Yes, on a project-by-project basis for larger commercial and public mechanical scopes. Before bidding we confirm the licensing path, labor agreement, insurance, and bonding for the project state and state it in the proposal.
What do you need to price a project?
Plans and specifications (including addenda), the bid date and form, schedule constraints, wage or PLA requirements, bonding requirements, and site access information.
Will you work as a subcontractor to our GC?
Yes. We bid to general contractors and construction managers as the mechanical subcontractor, and can also contract directly with owners.
Can you support the project after turnover?
We document equipment in the DaVinci Portal at closeout and can structure warranty and maintenance coverage. For out-of-area sites we explain the service plan in the proposal.
Are you union?
Yes, Davinci Mechanical is a UA Local 250 member, PLA and prevailing-wage ready, with certified payroll.