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Tree service in Tanasbourne and Rock Creek, Oregon

Our office is on NE Stucki Avenue in the AmberGlen part of Tanasbourne, so this is the area we drive through every day. South of the Sunset Highway it is Hillsboro's busiest district, with shopping, apartments, medical offices and townhomes. North of the highway, Rock Creek is a quieter unincorporated community around a golf course and a greenway.

Call (503) 386-0199 Request an estimate

Harry Fauver, founder. Updated September 2026.

Where Tanasbourne sits.

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The trees of Tanasbourne

ZIPs 97006, 97124 and 97229. Tanasbourne is in the City of Hillsboro. Rock Creek is unincorporated Washington County.

The two halves have different trees and different rules. Tanasbourne's trees are mostly planted, young to middle-aged, and managed by property managers and associations. Rock Creek's are older, bigger and mostly in private yards.

In Tanasbourne the work is landscape trees: red maples, pears, zelkovas and pines in parking lots, along private streets and between buildings. They were planted close together for quick effect, and many now crowd buildings, block signs and lights, and lift paving. Structural pruning and selective removal keep a site looking intended instead of overgrown.

Rock Creek was built in the 1960s and 1970s around its golf course, and the yards hold mature Douglas-fir, pine, birch and a lot of large ornamental conifers. Trees along the fairways take more wind than trees inside the streets, and birches here are dying of bronze birch borer, as they are everywhere in the valley.

The Rock Creek greenway links the two. Its wet ground is full of Oregon ash, and Bethany Lake Park at its east end is one of the places where the state confirmed emerald ash borer in August 2026. Ash anywhere near the greenway should be considered exposed.

What we are usually called for in Tanasbourne

Pruning for apartment and HOA sites

Clearance from buildings, lights, signs and walkways, done to a written scope a manager can approve, with as little disruption to residents and parking as we can manage. Tree trimming and maintenance.

Removing overcrowded landscape trees

Taking out the trees that were planted too close, after the city or the association has approved it, and grinding the stumps so the bed can be replanted. Tree removal.

Ash near the Rock Creek greenway

Assessment of ash trees in yards that back onto the greenway, and removal of those already in decline. Tree removal.

Storm damage on short notice

Being a few minutes away helps. Blocked drives, limbs on carports and split trees in common areas after wind or ice. Emergency tree service.

Around Tanasbourne

Local landmarks, and what the trees around each one tell you about your own.

AmberGlen

The former business park around our office is being rebuilt as a dense neighborhood around a central park and ponds. Its mature campus trees are some of the best in Tanasbourne, and keeping them through construction depends on protecting their roots from grading and trenching.

Tanasbourne's shopping district

Parking lot trees lead hard lives: reflected heat, compacted soil and little water. They decline early and shed dead limbs over cars. Trees at commercial sites were required by the site's approval, so removal goes through the city.

Rock Creek Trail

The trail follows the creek and the power line corridor through wetlands and ash groves. Yards along it sit next to regulated vegetated corridors, and trees inside those corridors are not the homeowner's to remove freely.

Bethany Lake Park

The park at the greenway's east end is where emerald ash borer was confirmed in 2026. Look for ash with thinning tops and heavy woodpecker damage along the trail, and compare them with any ash in your own yard.

Tanasbourne and Rock Creek on the map. Open in Google Maps

Which tree rules apply in Tanasbourne

Two jurisdictions meet here. Tanasbourne is in Hillsboro. Rock Creek, north of the Sunset Highway, is unincorporated. East of 185th Avenue you may be in Beaverton or in the county instead.

Inside Hillsboro city limits

Hillsboro regulates trees in the public right-of-way. You need the city's free Tree Care Permit before planting, removing or replacing a street tree, and before major pruning, which the code defines as removing branches or roots 2 inches across or larger, or more than 20 percent of the crown. A street tree that comes out has to be replaced.

The owner next to a street tree maintains it to ANSI A300 standards and keeps it 8 feet clear over the sidewalk and 15 feet clear over the street. Trees on your own lot are generally yours to manage, unless they stand in a mapped natural resource area or were required by a development approval.

In unincorporated Washington County

No city tree code applies here, even with a Beaverton or Portland mailing address. The county generally leaves trees on a developed home lot to the owner, with two big exceptions: mapped Significant Natural Resource areas, and the vegetated corridors along creeks and wetlands that Clean Water Services regulates. Cutting inside either can need review, even for a dead tree.

Trees along the road are generally the adjoining owner's responsibility, and a county right-of-way permit is needed when planting or removal affects traffic. Many subdivisions add a layer of their own, with covenants and common-area trees that need the homeowners association's approval. For neighbor disagreements over trees, the county points residents to free community mediation.

Specific to Tanasbourne

Much of Tanasbourne is apartments, condominiums and commercial property, where trees were required by the development's approval and managed by an association or a property manager. Rock Creek has an active homeowners association and common areas along the golf course and greenway. In both, the first question is who owns the tree, and the second is which government's rules cover it.

The permit checker gives a first answer in two questions, and the permit guide has the detail. We check every tree's status before a job is booked.

Tree services we offer in Tanasbourne

How a job goes

You call or send the form and tell us what the tree is doing. Phone photos help.
We walk the site and write the estimate in plain language.
Permits and the 811 utility locate are sorted out before any saw starts.
On the day, drop zones are protected and anything over a structure is roped down.
We rake, blow and haul, then walk the yard with you before we leave.

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Tree service questions from Tanasbourne

Is Tanasbourne in Hillsboro or Beaverton?

Tanasbourne west of 185th Avenue is in the City of Hillsboro, so Hillsboro's tree rules apply, including its free Tree Care Permit for street trees. East of 185th you are in Beaverton or in unincorporated county. Rock Creek is unincorporated.

Do I need a permit to remove a street tree in Tanasbourne?

Yes. Hillsboro requires its free Tree Care Permit before a street tree is planted, removed or replaced, and before major pruning. A removed street tree has to be replaced. We arrange the permit as part of the job.

Do you work for HOAs and apartment communities?

Yes. We provide a written scope and, where a board or the city needs one, a written assessment of the trees involved. Work is scheduled around residents' parking and access, and the site is cleaned the same day.

Has emerald ash borer reached Rock Creek?

The state confirmed it at Bethany Lake Park, at the east end of the Rock Creek greenway, in August 2026. Ash in nearby yards should be identified now. Healthy trees can be protected with treatment, and declining ones are best removed early.

Do you give free estimates in Tanasbourne?

Yes. We walk the site, tell you what the tree needs, and put the scope in writing: what is cut, how it comes down, where the wood and chips go and whether the stump is included. Call (503) 386-0199 or send the form on this page.

Request an estimate

Tell us about the tree and we'll call to set up a site walk. For emergency service, skip the form and call.