Isometric architectural blueprint of a two-story house in glowing white and gold wireframe, rising from a drafting grid — how OnSite scopes a whole build before crews arrive
Sec A-A · General contracting
Serving Pomona, CA

We run the whole job — from the first photo to the final walkthrough.

OnSite is the general contractor on your project in Pomona, CA. Send us a couple of photos and we'll tell you what we're looking at — then put a sectioned, line-item estimate in front of you before any crew arrives.

Insured & bonded Line-item estimates Serving the U.S.
The build, in order

Every job is a sequence. We run all of it.

Exploded isometric blueprint of a house under assembly — framing, roof planes and floors separating in glowing white and gold wireframe over a drafting grid
Dwg B-01 · Exploded assembly

Foundation

Footings, slab, and waterproofing — set and checked before anything gets framed on top.

Framing

Walls, floors, and roof structure squared to the drawings before rough-in starts.

Rough-in

Electrical, plumbing, and HVAC run while the walls are open — and inspected before they close.

Finish

Drywall, trim, paint, and fixtures, through to the final walkthrough.

Sec B-0 · Manifesto

We do the work.

Not a directory. Not a lead broker. Our crews, our schedule, and one number to call.

What we build

The work we take on in Pomona

Kitchens to rooflines, foundations to finished basements — scoped, priced, and built by one accountable team.

How the job runs

Ten stations, first photo to final walkthrough.

Every OnSite job moves through the same sequence. Scroll through it.

  1. Send photos

    Text us a couple of photos of what you're looking at. That's enough to start.

  2. We read the scope

    We look for the sequence and the failure points, then tell you what the job actually involves.

  3. Walkthrough

    A Zoom walkthrough of the space — it waives the $149 in-person written estimate.

  4. Line-item estimate

    A sectioned estimate with every line priced, so you can see exactly where the money goes.

  5. You approve

    You approve every line before any crew arrives. No surprise change orders.

  6. Permits & schedule

    We register with your village as its code requires and lock the crew schedule.

  7. Materials

    Ordered against the estimate lines and staged before demo day.

  8. The build

    Our crews run the sequence — demo, framing, rough-in, with inspections while the walls are open.

  9. Punch list

    We walk the space and clear every open item before we call it done.

  10. Final walkthrough

    You sign off on the finished work. One accountable team, one number to call — before and after.

Sprawling isometric blueprint cityscape of houses and buildings in gold and white wireframe on a vast drafting grid — the scale OnSite crews build across
Map E-01 · Service area

On the ground in Chicago, Naperville, Denver, Oak Park, Evanston, Arlington Heights, Schaumburg, Cicero, Berwyn.

That's where our crews are running jobs today. We take on projects across the United States.

Chicago, ILNaperville, ILDenver, COOak Park, ILEvanston, ILArlington Heights, ILSchaumburg, ILCicero, ILBerwyn, IL
Reg E-02 · The contractor of record

A contractor who has run jobs on two continents.

  • We are the contractor. We hold the schedule, carry the liability, and our crews are on site — not a directory, not a lead broker.
  • Insured and bonded. We register with each village as its code requires.
  • We take on the projects other contractors hand back.
  • One accountable team, and one number to call.
Free by phone or text

Get your estimate

Your phone and text estimate is free. An in-person written estimate is $149 — a Zoom walkthrough waives it. Tell us about the project and we'll come back with a clear, line-item scope.

Get your estimate

Tell us about your project and we’ll send a clear, line-item estimate — no obligation.

By submitting, you agree to be contacted by OnSite about your request by phone, text, or email. Consent isn’t a condition of purchase; message and data rates may apply.

Isometric blueprint detail of a two-story house — roof structure, bay window and framing drawn in glowing white and gold wireframe on a drafting grid
Sheet F-02 · Portal

Already working with us?

Track your estimate, approvals, and schedule from your OnSite portal.

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Terms & disclosures — CA