Owner's Representative & Construction Management · Northern California
Your eyes on the job site. Ashtonco, LLC watches the work in the field to make sure your project is built according to the drawings, and to the standard of quality and finish you expect, before problems are built in and covered up.
Most owners build once every few years. Your contractor builds every day. We sit on your side of the table, so the project you pay for is the project you get.
What we do
- Field observationRegular, hands-on presence on site, checking that the work matches the drawings and specifications as it goes in.
- Quality and finishHold the contractor to the workmanship and appearance you expect: alignments, finishes and the details drawings don't fully capture.
- Catch it earlySpot deficiencies while they are still easy to fix, and follow each one until it is corrected.
- Keep the recordDetailed daily field logs and photos that show what was built, when, and why.
- Report to the ownerClear, regular updates so you know what is happening on your project without having to be there.
- Close outPunch lists, inspections, as-built documents and handoff to your operations team.
Project types
Pads, shell buildings and national-tenant stores.
Warehouses, distribution and manufacturing buildings, rail-served sites.
Grading, utilities, paving, offsite improvements and site prep.
Office, retail and industrial interiors in occupied buildings.
Owner-builders who need an experienced manager on their side.
First facilities for growing technology companies, including power and test sites.
How engagements work
Daily field observation through active construction.
Scheduled site visits and inspections for smaller projects or quieter phases.
Scope, budget, schedule and contractor selection, then hand off to your team.
Every engagement includes a written daily field log with photos, so you always know what happened on site and why.
Recent work

Kraft Heinz, LathropMulti-track rail spur relocation tied into the mainline, over a mile of track, plus site development and a covered rail dock.

Food 4 Less, MantecaNew 55,000 sf grocery store, opened on time.

Starbucks, TracyGround-up drive-thru store, opened on time.

Rail and civil site workTrack, grading and utilities for an 800,000 sf rail-served building.
Also: Watson Ranch, American Canyon (Napa County), site development for McGrath Properties' 309-acre master-planned community, turning raw fields into large parcels and individual lots; and civil site work in Tracy, CA. See all projects →
Why an independent owner's rep
A full-time construction manager costs a salary, benefits and liability for a project that ends. Ashtonco, LLC is a licensed firm you bring in for the length of the job, scaled to the hours you need.
Ashtonco, LLC · Licensed California General Contractor #1058186 · (510) 773-0622
Talk to David