LANDSCAPING CONTRACTOR IN HILLSBORO, OREGON
Serving the Portland Metro Since 1987 | 285+ Five-Star Reviews | LCB# 7419 Get A Free QuoteLandscaping Services in Hillsboro, Oregon
Hillsboro is the largest city in Washington County, stretching from the established neighborhoods around downtown and the Tualatin Valley Highway corridor to the newer planned communities expanding south and east toward the tech campuses that define the region’s economy. Much of the city was farmland within living memory, and that agricultural soil creates both advantages and challenges for residential landscaping.
Monaghan’s Landscaping has been serving Hillsboro homeowners since 1987, installing retaining walls, sod lawns, automatic sprinkler systems, artificial turf, custom paver projects, and drainage solutions throughout the city.
From the walkable lots in Orenco Station and Tanasbourne to the larger residential properties throughout Reedville and the newer builds in South Hillsboro, we bring firsthand knowledge of Hillsboro’s soil conditions, lot layouts, and seasonal drainage patterns to every project we take on.
NOTE: We serve all of Multnomah County, Clackamas County, And Washington County. If you feel you live outside of these areas, give us a call. Chances are we serve your area too.
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Landscaping Contractor Services In Hillsboro, OR
Retaining Wall Installation
Most of Hillsboro sits on flat valley floor, but properties along the edges of Rock Creek, in the older neighborhoods near downtown, and on the gently rising ground toward the west side of the city deal with grade changes that send water where it shouldn’t go. A properly engineered retaining wall from Monaghan’s controls those transitions, creates defined outdoor living areas, and holds up through Oregon’s wet winters without shifting or settling. We’ve completed hundreds of retaining wall installation projects across Washington County.
New Sod Lawn Installation
Decades of farming across what’s now residential Hillsboro left behind soil that can be fertile but also compacted, poorly draining, and inconsistent from one part of a lot to the next. Newer builds in South Hillsboro come with graded but unfinished yards where builder-grade soil needs proper prep before anything will grow well. Monaghan’s installs premium sod suited to Washington County’s climate, including perennial ryegrass and fine fescue blends recommended by OSU Extension for western Oregon lawns. Every installation includes full soil assessment, prep, and grading.
Sprinkler System Installation
Hillsboro’s open valley location means more sun exposure and less natural shade than many Portland-area suburbs, and that dries lawns out faster during the five to eight weeks of dry weather between July and September. Monaghan’s designs and installs automatic sprinkler systems throughout the Hillsboro, OR area, with multi-zone setups scaled for everything from the compact lots in Orenco Station to the larger properties in Reedville and the newer builds in South Hillsboro. Smart scheduling keeps water bills manageable while keeping grass green through the dry months.
Artificial Turf Installation
Planned communities throughout the city often come with smaller lot footprints where every square foot of yard takes heavy use from kids, dogs, and daily foot traffic. That concentrated wear breaks down natural grass faster than on larger lots with room to spread the impact around. Synthetic turf from Monaghan’s holds up under all of it: no muddy paws, no re-seeding, no brown patches. Modern artificial grass drains fast, looks realistic year-round, and stands up to Oregon’s wet winters without matting or fading. It’s a popular upgrade throughout Hillsboro’s newer subdivisions where yard space is at a premium.
Paver Installation
Older properties along Tanasbourne, the neighborhoods near downtown, and the sections of the city along Tualatin Valley Highway are replacing aging concrete patios, driveways, and walkways that have settled or cracked on the valley’s agricultural soil over the decades. Monaghan’s installs paver patios, driveways, and walkways using precision base prep designed for Hillsboro’s soil conditions. The result is a long-lasting, attractive surface that adds real curb appeal and value to your property.
Drainage Solutions
Former agricultural soils across the valley floor create drainage conditions that vary from lot to lot, even within the same Hillsboro subdivision. Some properties drain well where the soil was previously tilled, while others sit on compacted layers that hold water for weeks during the rainy season. We install French drains, catch basins, and regrading solutions tailored to the specific soil profile on your property.
Beyond our five core services, we handle a full range of residential and commercial landscaping projects across the Portland metro area.
Hillsboro Landscaping Contractors
Monaghan’s Landscaping is a Hillsboro landscaping company with nearly four decades serving Washington County and the greater Portland area. Our crews have completed hundreds of projects throughout the city, from sod and sprinkler installations on the newer lots in South Hillsboro and Orenco Station to paver patios and drainage work on the established properties near downtown and along Tualatin Valley Highway. Every job comes with a workmanship warranty and a detailed written quote, and we won’t leave until the work meets the standard we set in the estimate. We’re not satisfied until you feel we deserve a 5-star review.
Hillsboro has added more residential development in the last 30 years than almost any city in the Portland metro, and that growth happened on land with a wide range of soil conditions left over from its agricultural past. A lawn installation on former nursery ground in Orenco is a different job than one on compacted fill in a South Hillsboro subdivision. Monaghan’s has been working on Hillsboro properties for more than 38 years, and that depth of experience with the city’s varied soil profiles shows up in the quality of every estimate and every finished project we deliver.
Looking for a Hillsboro, Oregon landscaper with a long track record in the area? No matter the scope of the project, Monaghan’s brings the same attention to detail we’ve applied to thousands of completed projects across the region. Whether you’re building a patio in Tanasbourne or installing drainage on a newer lot in South Hillsboro, call (503) 847-9110 or use the contact form below to get started with a free estimate from a Hillsboro landscaper who knows the soil. We also serve neighboring Beaverton, Tigard, and Portland.
Frequently Asked Questions
Quick Reference
Monaghan's Landscaping LLC
7925 SW Canyon Ln, Portland, Oregon 97225
Monday through Saturday, 7:00 AM to 6:00 PM
Fully licensed, bonded, and insured
A+
All of Multnomah, Clackamas, and Washington Counties
1987
Q: What areas of Hillsboro do you serve?
Monaghan’s Landscaping serves all of Hillsboro, Oregon, including Orenco Station, Tanasbourne, Reedville, South Hillsboro, AmberGlen, Witch Hazel Village, West Union, and the older neighborhoods near downtown along Tualatin Valley Highway. We also cover all of Washington County, Multnomah County, and Clackamas County. Call (503) 847-9110 or use the contact form below to confirm service to your address.
Q: What type of sod grows best in Hillsboro?
Perennial ryegrass and fine fescue blends are the top-performing varieties for Hillsboro’s wet winters and dry summers, and are the varieties recommended by OSU Extension for lawns throughout western Oregon. These blends establish quickly, handle foot traffic well, and stay green through the cooler months. Monaghan’s uses these as the standard for all sod installations in the Hillsboro area.
Q: Does Hillsboro’s agricultural soil affect landscaping projects?
Yes, and in ways that aren’t always obvious. Much of residential Hillsboro was farmland within the last few decades. That soil can be rich in organic matter but also compacted from heavy equipment, inconsistent in drainage from one part of a lot to the next, and layered with fill material where developers graded over the original topsoil. Those conditions affect how we prep for paver installations, how deep we build drainage layers behind retaining walls, and how we amend soil before laying sod. Our crews assess the soil profile on every Hillsboro property before recommending a scope of work.
Q: What permits are required for retaining walls in Hillsboro?
In the City of Hillsboro, retaining walls over four feet in height generally require a building permit. Walls near property lines, on slopes, or supporting surcharges like driveways may have additional engineering and setback requirements under Hillsboro’s development code. Monaghan’s is familiar with local permitting for residential retaining wall projects and can help guide you through what’s needed for your specific site.
Q: Do you work on newer construction homes in South Hillsboro?
Yes. South Hillsboro is one of the largest active residential expansion areas in the Portland metro, and many of the homes there come with graded but unfinished yards, compacted builder soil, and minimal established landscaping. Monaghan’s works regularly on new construction properties throughout this part of the city, including sod installation, sprinkler systems, and paver work on lots where builders have left the final landscaping to the homeowner.
Q: Do you work on older homes near downtown Hillsboro?
Yes. The neighborhoods near downtown and along Tualatin Valley Highway include some of Hillsboro’s oldest residential properties, many dating to the mid-20th century or earlier. These homes often have original concrete that has settled, aging grading that no longer directs water away from the foundation, and mature landscaping that has outgrown the original design. Monaghan’s handles paver replacements, drainage corrections, and retaining wall projects on these older lots regularly.
Q: How does Hillsboro’s flat terrain affect drainage?
Flat lots don’t move water naturally the way sloped properties do, and across much of Hillsboro the valley floor terrain means rainfall pools rather than drains. When you add the variable soil conditions from the city’s agricultural past, some properties handle rain well while the lot next door stays saturated for weeks. Proper drainage planning in Hillsboro requires assessing the specific soil profile on your property, not just applying a standard solution. That’s something our crews evaluate during every estimate.
Q: How do I get a free estimate for my Hillsboro landscaping project?
Call us at (503) 847-9110 or fill out the contact form below with a brief description of your project. We’ll get back to you quickly to schedule a site visit and provide a written estimate at no charge.
Why Hillsboro Homeowners Choose Monaghan’s Landscaping
When you’re investing in landscaping projects for your property, you want a contractor who understands Portland-area soil, climate, and terrain. Here’s why homeowners across the metro area trust Monaghan’s.
38+
years in Portland
285+
five-star reviews
A+
BBB rating
3 yr
workmanship warranty
Licensed, bonded, insured — Oregon LCB# 7419 👈 click to verify
Free written estimates — on-site consultation, full scope before work begins
5-star commitment — we won't leave until we've earned your 5-star review, see our live Google reviews
Eco-friendly equipment — electric at 65-70 dB, quieter than conversation, no nasty exhaust fumes
65 dB
our equipment
85 dB
gas equipment
Committed to cleaner, quieter landscaping
We're committed to using clean, renewable energy. We've deployed all-electric mowers, trimmers, and blowers across our fleet. No exhaust fumes, no 85-decibel noise at 7 AM. Our electric equipment runs at conversation level, and we're converting our remaining vehicles to electric and hybrid next. Your neighbors will thank you.
Neighborhoods We Serve In Hillsboro, OR
- AmberGlen
- Brookwood
- Downtown Hillsboro
- Hawthorn Farm
- Jackson School
- Orenco Station
- Quatama
- Reedville
- Rock Creek
- South Hillsboro
- Tanasbourne
- West Union
- Witch Hazel Village
Areas We Serve
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