Cornelius, Oregon · Structural & Foundation

Structural & Foundation in Cornelius, OR — built by your veteran-owned neighbor.

Quick drive from our Beaverton office. We know Washington County permit cycles and what local zoning will and won't allow. Bilingual EN/ES crews on every site.

Call (971) 226-7751 Free walkthrough →

Why Cornelius homeowners hire us for structural & foundation.

Foundation and structural work is where general contractors get bitten - slow rented excavators, unclear or absent engineering, scope creep that doubles the price. You deserve a contractor who OWNS the equipment, has PE engineers on retainer (not on a 6-week wait), and will tell you when you DON'T need the expensive fix. We own our excavators, our forms, our scaffolding - so when we say we'll be in the dirt next Tuesday, we will be.

What you get when you hire us for structural & foundation in Cornelius.

✓Free site walk + soil/drainage assessment - written report yours to keep
✓Owned excavators - no rental scheduling delays
✓3 PE structural engineering firms on retainer (parallel quotes when speed matters)
✓Foundation repair: piers, jacks, crack injection, full underpinning
✓Retaining walls (engineered + stamped for height > 4ft)
✓French drains, surface drainage, sump pump install
✓Site prep and rough grading for additions + ADUs

Structural & Foundation in Cornelius — neighborhoods we've worked.

We're based in Beaverton with crews working Cornelius weekly. Quick drive from our office. We know Washington County permit cycles and what local zoning will and won't allow.

Cornelius Heights

ZIP codes served: 97113

How structural & foundation jobs run in Cornelius.

STEP 01

Free Assessment

Free site walk + soil + drainage assessment. Engineer engaged early if structural. We'll tell you when the cheap fix beats the expensive underpinning - because sometimes it does.

STEP 02

Engineering + Permit

PE-stamped engineering. Permit if required (in our name). Utility locate. Neighbor + landscape protection plan.

STEP 03

Our Crew, Our Equipment

Excavation, form, pour, cure. OUR crew, OUR excavators, OUR schedule - no rental waitlist.

STEP 04

Engineer Sign-Off + Warranty

Engineer sign-off, final inspection, 10-year structural workmanship warranty in your name. Transferable to next owner.

Structural & Foundation in Cornelius — frequently asked questions.

How do I know if my foundation actually needs repair?

Cracks > 1/4" wide, doors sticking, floors sloping - those are signals. We do free assessments and won't sell you work you don't need. That's not marketing, that's how we've survived 17 years.

Do I need an engineer for a retaining wall?

Yes if it retains > 4ft of soil, or if it's near a structure. We engage the PE for you - and a wall built without engineering is one that comes down in the next freeze-thaw, on your insurance.

Can you fix drainage without re-grading the whole yard?

Often yes - French drains, downspout extensions, dry wells. We start with the cheapest fix that actually works.

What happens if I pick the wrong contractor?

Foundation work without engineering = no warranty, no insurance coverage if it fails, no resale value when the buyer's inspector finds it. Worst case: you pay twice - once for the bad fix, once to tear it out. Engineer-stamped work costs more upfront, costs less forever.

Do I need a structural engineer for my project?

If you are touching load-bearing walls, foundation, or framing, yes. We have 3 PE engineering partners on retainer — no waiting weeks for an outside firm.

Can you handle foundation lifts and underpinning?

Yes — owned excavators in-house. PE-stamped scope. Permit in our name.

Other services in Cornelius

Structural & Foundation in other cities

Free inspection — no obligation, written report yours to keep

Probably not the right move if you want the cheapest bid.

If you want this done once — by a CCB-licensed local who'll still answer the phone in year seven — we reply to every web inquiry inside 15 minutes during business hours (Mon–Sat 8 AM–7 PM PT). Storm damage or active leak? Call (971) 226-7751 — same-day callback.

Direct line

(971) 226-7751

Hours

Mon–Sat
8 AM – 7 PM PT

info@greenoconstruction.com

Office

20001 SW Tualatin Valley Hwy
Suite 208
Beaverton, OR 97006

Storm Response

24-hour callback
365 days/year