Landscaper Portland Oregon
Serving Portland Since 1987 | 285+ Five-Star Reviews | LCB# 7419
Get Your Free Landscaping Quote in 3 Easy Steps
1️⃣ Request a Fast, Free Quote
Fill out the quick form on the right (or below on mobile), and one of our estimators will get right back to you to schedule your free consultation and quote.
You can also tap on the button below to call us.
2️⃣ Receive Your Written Estimate
After the project details are collected, you’ll receive a written estimate outlining the job details and the cost. After you accept, we’ll schedule the job to be completed when convenient.
3️⃣ Get Your Project Done!
Our crew of professionals will show up on the scheduled date and time to complete your landscaping project.
What To Expect: Most consultations are scheduled within a few days of your request. We’ll come to your property, assess the project, and provide a detailed written estimate with line-item pricing. No pressure, no obligation.
“This is the second project Monaghan’s has done for us, and both times the job has turned out even better than expected. I can’t recommend them highly enough.”
Jordan F. · Beaverton, Oregon
FREE QUOTE REQUEST FORM
Landscaping Contractor Services In Portland, OR
Retaining Wall Installation
Portland’s sloped lots and clay soil make retaining walls one of the most common hardscape projects in the metro area. We build concrete block, natural stone, and boulder walls that create level, usable yard space and hold up through decades of Oregon rain.
New Sod Lawn Installation
A finished lawn in a single day, using perennial ryegrass and fine fescue blends grown in the Willamette Valley and recommended by OSU Extension for Western Oregon. We handle soil prep, grading, and installation on Portland’s clay-heavy soil so the roots actually take hold.
Automatic Sprinkler System Installation
Portland gets less than 3 inches of rain from July through September. A properly zoned irrigation system keeps your lawn and planting beds healthy through the dry months with smart controllers, backflow compliance, and zone-by-zone coverage designed for your property.
Artificial Turf Installation
Shaded yards, muddy dog runs, and moss-covered lawns that won’t grow no matter what you try. We install UV-stabilized synthetic turf on a drainage-ready aggregate base built for Portland’s rain, giving you a clean, green yard year-round with zero maintenance.
Paver Installation
Concrete slabs crack in Portland’s freeze-thaw cycles. Pavers flex with the ground and last decades longer. We install concrete, brick, natural stone, and permeable pavers for patios, walkways, and driveways on properly prepared bases designed for our clay soil.
Beyond our five core services, we handle a full range of residential and commercial landscaping projects across the Portland metro area.
See What Your Neighbors Are Saying
Why Portland 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.
Areas We Serve
Don't see your area? Give us a call, we probably serve your area too! Call (503) 847-9110
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
What areas does Monaghan's Landscaping serve?
▼We serve all of Multnomah County, Clackamas County, and Washington County. That includes Portland, Lake Oswego, West Linn, Happy Valley, Beaverton, Clackamas, Damascus, Milwaukie, Gladstone, Tigard, Tualatin, Oregon City, Hillsboro, and surrounding communities. If you're not sure whether we cover your area, call (503) 847-9110 and we'll let you know.
What services does Monaghan's offer?
▼Our core services are retaining wall installation, sod lawn installation, automatic sprinkler system installation, artificial turf installation, and paver installation. We also handle landscape design, French drains and drainage solutions, grading and erosion control, landscape lighting, fire pits, outdoor kitchens, tree and shrub installation, native plantings, seasonal cleanups, sprinkler repair, and commercial landscaping.
How much does a typical landscaping project cost in Portland?
▼It depends entirely on the scope. Small projects like a front yard sod installation or a short retaining wall typically start in the $1,500 to $5,000 range. Mid-size projects like a full-yard sod installation, paver patio, or multi-zone sprinkler system generally run $5,000 to $15,000. Large-scale projects involving retaining walls with significant grading, full property landscaping, or outdoor living spaces can range from $15,000 to $50,000+. We provide free, itemized written estimates after an on-site assessment so you know the full cost before any work begins.
How do I get a free estimate?
▼Call (503) 847-9110 or fill out our online quote request form. We'll schedule an on-site consultation, typically within a few days, where we assess your property, discuss your goals, and then provide a detailed written estimate with line-item pricing. No pressure, no obligation.
Is Monaghan's licensed and insured?
▼Yes. We hold Oregon landscape contractor license LCB# 7419, and we're fully bonded and insured with general liability and workers' compensation coverage.
What warranty does Monaghan's provide?
▼We offer a 3-year workmanship warranty on structures and installations, a 3-year warranty on equipment and fixtures, and a 1-year plant warranty with proper watering compliance. Warranty terms are documented in your written proposal before work begins.
How long does a typical project take?
▼Small installations like irrigation repairs or a front-yard sod job are often completed in 1 to 3 days. Mid-size projects like paver patios or retaining walls typically take 3 to 7 days. Full design-build projects involving multiple elements, grading, and permitting can take several weeks. We provide a timeline in the proposal and schedule around Portland weather windows.
Does Monaghan's work year-round?
▼Yes. Portland's mild climate allows us to work through all four seasons. We schedule around heavy rain periods and adjust project timing based on seasonal conditions. Fall and spring are ideal for planting, summer is peak construction season, and winter is the best time for drainage work when you can see exactly where water is going.
Does Monaghan's handle permits and code compliance?
▼Yes. We have experience navigating Portland permitting requirements for retaining walls over 4 feet, significant grading, and certain hardscape projects. We coordinate with local building departments, prepare permit documentation, and make sure installations meet stormwater and drainage standards.
What payment terms does Monaghan's offer?
▼We require a 50% deposit to begin work, with the balance due on completion. We accept credit card, check, and Venmo. All terms are documented in a written contract before work starts. For larger projects, we can structure milestone-based payments or phased work plans.
Can Monaghan's help with drainage and erosion problems?
▼Yes. Portland properties routinely deal with wet-season runoff, standing water, and slope erosion. We design and install French drains, catch basins, dry creek beds, subsurface drain systems, and retaining walls to manage water and stabilize slopes. For complex drainage issues, we coordinate with civil engineers when needed.
Does Monaghan's provide landscape design services?
▼Yes. We offer full design-build services, from initial site analysis through installation. Our designers evaluate your property's soil, sun exposure, drainage, and existing features, then create a plan that fits your goals and budget. We specify plant palettes appropriate for Portland's climate and can provide multiple design options at different price points.
Does Monaghan's do commercial landscaping?
▼Yes. We work with property managers, HOAs, and businesses throughout the Portland metro area. Commercial projects often involve phased installations, coordination with other trades, and scheduling around tenant or resident activity. We provide detailed proposals, insurance certificates, and project timelines.
What's the best time of year for landscaping projects in Portland?
▼It depends on the project type. Sod and planting are best in early fall (September through October) or mid-spring (April through May). Hardscape projects like retaining walls, pavers, and patios can be built in any season but summer offers the most predictable weather. Drainage work is actually best scheduled in the wet months when you can see exactly where water flows and pools.
Does Monaghan's install and repair sprinkler systems?
▼Yes. We design and install new automatic sprinkler systems with proper zone coverage, smart controllers, and backflow prevention compliant with Portland Water Bureau requirements. We also repair and upgrade existing systems, including seasonal tune-ups, head replacements, line repairs, and controller upgrades.
Can Monaghan's remove trees or grind stumps?
▼We coordinate tree removal and stump grinding through licensed arborist partners. For smaller trees, our crews can handle removal directly. For large or complex removals, we work with certified arborists and manage the permitting, disposal, and any site restoration like replanting or regrading.
Does Monaghan's offer seasonal cleanups?
▼Yes. We provide seasonal cleanup services including leaf removal, bed cleanups, mulch replenishment, pruning, and debris hauling. We offer one-time cleanups or recurring seasonal service plans.
How does Monaghan's handle client communication during a project?
▼Each project is assigned a project manager who handles scheduling, progress updates, and any change orders. We provide written scopes and confirm the timeline before work begins. If anything changes during the project, we discuss it with you and get approval before proceeding.
What sustainability practices does Monaghan's use?
▼We've transitioned to all-electric mowers, trimmers, and blowers that operate at 65-70 decibels, roughly conversation level, compared to 80-90 decibels for gas equipment. We also incorporate native plantings, water-efficient irrigation, and permeable paving into projects where appropriate. Our next step is converting our vehicle fleet to electric and hybrid.
How should I prepare my property before work begins?
▼Clear outdoor furniture, toys, and debris from the work area. Mark any sprinkler heads, shallow irrigation lines, or landscape lighting. Remove pet waste and make sure there's access for trucks and equipment. We'll confirm specific prep tasks during the consultation and handle all the heavy work from there.
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