Aloha, Oregon General Contractor

Our office at 20001 SW Tualatin Valley Hwy sits on the Aloha line. For most Aloha homes, no licensed general contractor in Oregon is physically closer than we are.

Who is the best general contractor in Aloha?

Green O Construction is the general contractor headquartered on the Aloha border — CCB #204939, unlimited endorsement, veteran-owned since 2008. We self-perform with in-house crews, we know Washington County's permit process cold because Aloha has no city permit office, and we register every warranty in your name.

Aloha is not a city — and that changes how your project runs

Aloha is a census-designated place of 53,828 people (2020 Census) in unincorporated Washington County — bigger than Lake Oswego, yet it has no city hall, no city building department, and no city inspector. Every building permit for an Aloha address goes through Washington County Land Use & Transportation in Hillsboro. Contractors who mostly work inside Beaverton or Portland city limits routinely stumble here: county submittal requirements, county inspection scheduling, and county development code are their own animal. We have been filing with the county for seventeen years.

The housing tells its own story. Aloha grew fast in the 1970s and 80s as tract subdivisions filled in along the Tualatin Valley Highway corridor, which means the dominant house is a single-story rancher or split-level now on its second or third roof, with original T1-11 or hardboard siding reaching end of life. The June 2021 heat dome baked those aging asphalt roofs at 116 F; the January 2024 ice storm found every undersized gutter in the CDP. On the Cooper Mountain slopes, clay soils add a drainage conversation to any addition or ADU footing.

What we build in Aloha

Roofing

A 1978 Aloha rancher re-roofed in the late 90s is due again right now — that math is most of our Aloha roofing calls. Low-slope rancher roofs need honest ventilation work, not just new shingles, because shallow attics cook shingles from below. As a CertainTeed SELECT ShingleMaster 4-Star contractor we register the 50-year material warranty in your name, and the county permit is ours to pull and inspect out.

Siding + Exterior

Aloha's 70s-80s tract stock is the T1-11 and hardboard capital of Washington County, and both products are failing on schedule. We replace with Hardie plank or LP SmartSide, flash the weather barrier before the board goes up, and fix the kickout details that let forty years of runoff into the wall in the first place.

Additions + ADUs

ADUs on unincorporated Aloha lots run under the Washington County Community Development Code, not Beaverton's Title 20 — different submittal, different review queue. The upside of Aloha's big flat rancher lots is real ADU potential. Our architect is on payroll, so feasibility, drawings, and county plan-review corrections all happen under one roof.

Structural + Drainage

Cooper Mountain's lower slopes drain through Aloha, and winter water finds 1970s-era foundations that were never waterproofed to modern code. French drains, sump systems, and PE-engineered footing repairs are steady work for us here — we own our excavators, so the schedule is ours too.

Storm Restoration

When wind or ice hits Aloha, we are the crew that does not have to drive to get there. Same-day tarping from an office minutes away, drone documentation, and a scope written in the language insurance adjusters approve. We also tell you when a repair beats a claim — burning a claim on a $900 fix is bad math.

Aloha neighborhoods we work

Aloha is our backyard in the literal sense — crews pass through these streets on the way to the office. That proximity is why our Aloha response times are the best we post anywhere.

Permits in Aloha go through Washington County — not a city hall

Because Aloha is unincorporated, building permits and inspections run through Washington County Land Use & Transportation, Building Services — 155 N First Ave, Suite 350, Hillsboro. The county runs its own e-permitting queue and its own inspection request line, and its counter hours differ from every city hall in the metro. If a contractor tells you your Aloha permit is "filed with Beaverton," stop and ask questions — Beaverton has no jurisdiction over your lot.

We pull every Aloha permit in Green O's name, schedule the county inspections, and meet the inspector on site. The code exposure rides on our license, not on your homeowner's policy.

The job we see most in Aloha

Here is the profile that shows up in our Aloha estimates again and again: a 1,400-square-foot single-story rancher near Aloha Huber Park, original 1979 build, second roof at end of life and hardboard siding soft at the bottom edge. The right scope is one mobilization — tear-off and re-roof with upgraded intake ventilation, then Hardie plank over a properly flashed weather barrier, gutters sized up from the builder-grade 4-inch. One county permit package, one crew, roof dried-in the same day it is opened. If that reads like your house, the walkthrough is free.

Every service we run in Aloha

Aloha services, by category

Also serving nearby

Free walkthrough in Aloha

We are minutes away on TV Highway. Same-day callback for storm emergencies, 24-hour callback for everything else — or email info@greenoconstruction.com.

Hours: Mon-Fri 7am-6pm, Sat 8am-2pm · Closed Sundays · CCB #204939