Clackamas County Home Inspections, From Your Oregon City Neighbor.

I live and work in Oregon City. Lake Oswego mid-century, West Linn hillside, Happy Valley new build, Sandy crawlspace, Estacada farmhouse. I've walked all of them. As Oregon City's only Certified Master Inspector® with 2,400+ inspections and 12 years of contractor experience, this is my home county and my home market.

Russ Motyko, Oregon City's only Certified Master Inspector, inspecting a Clackamas County home
2,400+
Inspections in Oregon & Washington
5.0
Google & Yelp Rating

This Is My County. I Inspect Here Every Week.

A representative Clackamas County Oregon home that Russ inspects
Clackamas County, Oregon

Clackamas County covers more ground than most people realize. A Lake Oswego mid-century on a sloped lot. A 1995 Happy Valley spec. A farmhouse outside Molalla on five acres. A new build on the Oregon City bluff. They all need an inspection. They all need a different one. And I live right here.

Not only do I have 10 years of inspector experience, I also worked as a Contractor for 12. My specialty was difficult and high-end framing. But I've also replaced roofs, ran wiring, poured concrete, waterproofed showers, set tile, replaced siding and windows, installed drywall, and set doors. That dual background is what lets me read a 1968 Lake Oswego ranch the way the original carpenter framed it, then spot what the 1990s addition did wrong.

When I walk a Clackamas County home, the era and city set the priorities before I even open the door. In Happy Valley I'm focused on grading, drainage, and CPVC at heat sources. In Estacada it's well, septic, wood stove clearances, and outbuildings. In Lake Oswego it's hillside drainage, complex rooflines, and deferred maintenance on systems that were high-end thirty years ago.

I hold Certified Master Inspector® certification (top 3% of the industry), Oregon OCHI license #1898, Washington DOL license #1856, and CCB #254518. Every inspection includes free thermal imaging. In Clackamas County's climate, that's necessary, not optional.

Clackamas County, OR Housing Market

County-wide statistics sourced from Clackamas County, OR.
$615,000
Median sale price
39 days
Median days on market
429
Homes sold last month
1,148
Homes for sale now
Live Market Data · Updated March 2026
Source: Redfin Data Center

Clackamas County, City by City

From the urban core in Lake Oswego and Milwaukie to the rural edges in Estacada and Molalla. Each city has its own inspection priorities. Click any to read more.

Oregon City
1850s – present

The county seat and my home base. Wide range of eras from historic downtown homes near the falls to new construction on the bluff. Knob-and-tube and Federal Pacific findings in older stock, grading and CPVC concerns in new.

Lake Oswego
1960s – present, luxury stock

Mid-century and luxury homes on hillside and waterfront lots. Complex roofs, multi-zone HVAC, pools, and deferred maintenance on systems that were premium 30 years ago. Inspection depth matters here.

West Linn
1970s – present

Hillside lots and waterfront properties on the Willamette and Tualatin. Retaining wall condition, foundation drainage, and crawlspace moisture are constants here. Site grading is rarely simple in West Linn.

Happy Valley
1995 – present

One of Oregon's fastest-growing cities. Heavy new construction with grading, drainage, and CPVC concerns. 11-month warranty inspections are critical here before builder warranties run out.

Milwaukie
Post-WWII through 1970s

Post-WWII housing stock with consistent findings: galvanized plumbing, aging electrical panels, original windows, and crawlspace moisture. Buried oil tank checks every time on pre-1990 homes.

Gladstone
1950s – 1980s

One of the county's older small cities. Crawlspace moisture, oil tank concerns, and aging electrical are common findings. Federal Pacific Stab-Lok panels still in service in mid-century homes here.

Clackamas
1970s – 2000s

Unincorporated community with a mix of ranch-style homes and newer subdivision development. Aluminum wiring in older stock, EIFS siding concerns on newer mid-90s and early-2000s builds.

Damascus
Mixed eras, rural

Transitional area between suburban and rural. Both older properties and new development. Grading on newer lots, well and septic on older parcels. Radon Zone 1 across all of it.

Canby
Mixed, agricultural fringe

Small-city feel with a mix of older in-town homes and newer subdivisions on the agricultural fringe. Manufactured homes, outbuildings, and acreage parcels are all in scope here.

Sandy
Mixed, foothills climate

Gateway to Mt. Hood at 1,000 feet elevation. Rural homes, 1990s subdivisions, and newer outer-edge development. Wood stoves, crawlspace moisture, and well/septic are constant focus areas.

Estacada
Rural, mixed eras

Rural community along the Clackamas River. Older farmhouses, well and septic, wood heat, and outbuildings are the norm. Wildfire risk maps apply to many parcels in and around the city.

Molalla & Wilsonville
Rural and suburban mix

Molalla is a rural small town with site-built and manufactured housing. Wilsonville is the county's southwest tech corridor with newer planned communities. Different inspection priorities, same county.

Clackamas County Homes by Construction Era

Each era of construction in the county has its own materials, failure patterns, and inspection focus. Knowing which era your home falls into tells you a lot about what's coming.

Pre-1965 Homes

The county's oldest stock is concentrated in Oregon City, Milwaukie, Gladstone, Estacada, and rural parcels across the south county. Post-and-beam framing, knob-and-tube electrical, galvanized supply, cast iron drains, and foundations that predate modern seismic standards. These homes need a different inspection than anything built in the last 40 years.

Buried oil tanks are a documented liability in pre-1990 Clackamas homes and especially common in this era. We look for fill caps, vent pipes, supply line stubs, and patched concrete every time. Cast iron sewer scope is a near-universal recommendation here.

Common findings in pre-1965 Clackamas homes
Buried oil tanks
Pre-1990 Clackamas homes often used oil heat. Abandoned tanks are an insurance and disclosure liability. Cleanup $1,500 to $20,000+.
Galvanized supply pipes
60-plus years of internal corrosion. Restricted flow, discoloration. Repipe $10,000 to $25,000.
Knob-and-tube or early panels
Original wiring in some rural Estacada and Molalla farmhouses. Insurance carriers often require replacement.
Cast iron drain lines
60-plus years underground. Scale, joint seepage, root intrusion. Sewer scope essential before closing.
Unreinforced foundations
Seismic retrofitting wasn't standard. Anchor bolt presence and cripple wall bracing documented for awareness.

1965–1985 Homes

The county's first major subdivision wave. Split-levels and ranches in Milwaukie, Gladstone, Oregon City, and the early Sandy and Lake Oswego neighborhoods. The electrical systems from this era are the priority finding. Federal Pacific Stab-Lok and Zinsco panels appear regularly. Aluminum wiring shows up in 1965 to 1974 builds.

Polybutylene plumbing was used in some Oregon builds from late 1970s through mid-1990s. Identification before closing avoids a $10,000 to $20,000 surprise later.

Common findings in 1965–1985 Clackamas homes
Federal Pacific & Zinsco panels
Documented failure rates. Insurance carriers often flag or decline coverage.
Aluminum wiring (1965–1974)
Connection failures at outlets and switches are a fire risk if not properly addressed.
Polybutylene plumbing
Used in late 1970s and early 1990s Oregon builds. Degrades with chlorine exposure. Repipe $10,000 to $20,000.
Oil-to-gas conversions, undocumented
Common in Milwaukie and Oregon City. Missing flue lining is a combustion safety issue.
Crawlspace moisture
Minimal vapor barriers. Pacific NW rainfall keeps soil saturated October through May.

1985–2005 Homes

The bulk of Clackamas County's current housing stock. Subdivisions in Happy Valley, Damascus, Clackamas, Wilsonville, and outer Sandy and Canby. First-generation composition roofs from this period are past their 25-to-30-year service life. CPVC plumbing is brittle. Deck ledger connections are a frequent structural concern.

Unpermitted additions and conversions from this period are common across the county. Records gaps for unincorporated areas can be significant.

Common findings in 1985–2005 Clackamas homes
Roofs at or past service life
25-year shingles from 1995-2000 are aged out. Replacement $10,000 to $20,000+.
CPVC plumbing brittleness
Brittle with age. Cracks at fittings near water heaters are the warning sign.
Deck ledger and wood rot
Wet climate accelerates rot at ledger boards and post bases. A structural safety concern.
Unpermitted additions and conversions
Garage conversions and finished basements without permit documentation in Clackamas County records.
HVAC at replacement age
Mid-1990s to early-2000s furnaces and heat pumps near end of service life.

Happy Valley & New Construction

Happy Valley, the Oregon City bluff, Damascus infill, and Wilsonville growth corridors keep adding new stock. Buyers in new construction sometimes assume that a new home doesn't need an inspection. That assumption gets expensive when it turns out wrong. Code inspections check minimum standards at specific phases. They don't evaluate the finished home.

The 11-month warranty inspection is essential here. Document defects before the builder's one-year warranty expires. The clock starts at closing.

Common findings in new Clackamas construction
Grading toward foundation
Freshly disturbed lots drain toward the house before soil settles. Common in Happy Valley new builds.
HVAC installation defects
Improperly sealed ducts, disconnected vents, uncalibrated systems found regularly in new construction.
Flashing deficiencies at windows and doors
Improper installation allows moisture into wall assemblies. Wet climate makes failures show up fast.
Attic insulation and ventilation gaps
Thermal imaging finds these. Covered by builder warranty if caught in time.
Radon (yes, even in new homes)
Clackamas geology produces radon regardless of home age. Passive mitigation requires testing to confirm it works.

Recent Findings From Clackamas County Inspections

Three findings from real Clackamas inspections this season. Every report includes high-res photos, severity ratings, and repair context.

Buried oil tank fill cap discovered at a Milwaukie 1962 ranch inspection
Oil Tank Sign — Milwaukie
1962 Ranch

Capped fill pipe at exterior wall, supply line stub in basement, no decommissioning paperwork on file. Documented for buyer awareness and insurer disclosure before closing.

New construction grading issue in Happy Valley draining toward foundation
New Build Grading — Happy Valley
2023 Subdivision

Negative slope at three sides of the foundation. Builder responsibility under warranty. Documented during 11-month warranty inspection so the homeowner could submit before the deadline.

Cedar shake roof at end of life on a Lake Oswego home
Cedar Shake Roof — Lake Oswego
1979 Home

Original cedar shake at 45+ years. Heavy moss, split shakes, exposed underlayment. Replacement cost documented with three contractor referrals supplied separately.

Home Risk Quiz

Is Your Dream Home Hiding Significant Issues?

See Your Potential Home Through an Inspector's Eyes.

Transform your observations into a clear risk profile. In just two minutes, you will receive a breakdown of what a professional inspector would be concerned about based on what you saw.

2 minutes
Based on what you saw at the showing
No technical knowledge needed
Free Assessment
Begin Assessment

8 quick questions. No contact info required.

1 of 8
01

How old is the home?

You'll have the year built from the listing or the seller. Home age is the single biggest driver of inspection risk.

02

What did the roof look like from the street?

Look for curling shingles, dark patches, missing granules, or visible moss. A good look at the roof from the ground can tell you more than you'd think.

03

Did you notice any musty smell inside the home?

A musty or earthy odor is the most reliable clue buyers can detect about crawlspace moisture or mold — even without going under the house.

04

Did you see the electrical panel? What did it look like?

It's usually in a utility room, garage, or hallway. Federal Pacific (orange breakers) and Zinsco panels are known fire risks and still common in Portland-area homes from the 1960s to 1980s.

05

Did you notice any water stains on ceilings or walls?

Look near the corners of ceilings, under windows, and in bathrooms. Even old-looking stains matter — they show water has been in places it shouldn't be.

06

How did the overall condition of the home feel?

Trust your gut. A home that feels well-loved and maintained usually is. One that feels neglected almost always has deferred items hiding out of sight.

07

Did the home have a finished basement, addition, or garage conversion?

These are some of the most common places to find unpermitted work. A finished space isn't automatically a problem — but without permits, there's no record of whether it was done safely.

08

Where are you in your homeownership journey?

This helps us tailor your results to your situation.

What Makes Clackamas Homes Different to Inspect

The county's geography, geology, and housing stock create inspection concerns that need a local eye to catch.

EPA Radon Zone 1

The entire county carries the highest radon designation in the country. Clackamas geology produces uranium decay across most of the metro. Radon is the second-leading cause of lung cancer in the U.S. The only way to know your home's level is to test. Every home, new or old, should be tested. Passive systems in new construction can fail.

EPA Zone 1 — highest designation

Buried Oil Tanks

Pre-1990 Clackamas homes commonly used oil heat. Tens of thousands of abandoned underground tanks across the county. They're a seller-disclosure issue, an insurance liability, and a potential cleanup cost in the $1,500 to $20,000+ range. We look for signs every time on pre-1990 homes.

Required DEQ disclosure

Wildfire & Hillside Risk

Estacada, parts of Sandy, and rural east county carry moderate-to-high wildfire risk on Oregon's maps. Insurance carriers are paying close attention. West Linn, Lake Oswego, and parts of Happy Valley have steep hillside lots where drainage, retaining walls, and foundation movement need their own attention. Both get documented when relevant.

Relevant on elevated & forested parcels

Everything We Check in a Clackamas County Home

Every inspection covers all accessible systems and components, roof to crawlspace. We physically enter attics and crawlspaces. We operate every system we can safely access.

Roof & Attic

Shingles, cedar shake, flashing, gutters, insulation, ventilation, moisture. Roof walked when safe, drone when not.

Electrical

Panel brand (FPE, Zinsco flagged), wiring type, outlets, GFCI and AFCI protection.

Plumbing

Pipe material (poly-B flagged), drains, water heater, pressure, fixtures.

HVAC

Furnace, AC, heat pump, ductwork. Wood stove and fire insert clearances included.

Foundation & Structure

Cracks, settling, retaining walls, anchor bolts, visible framing.

Crawlspace & Basement

Full physical entry. Moisture, vapor barrier, insulation, wood rot, oil-tank signs.

Interior

Walls, ceilings, floors, windows, doors, built-in appliances.

Exterior & Grading

Siding, deck, driveway, grading, drainage away from foundation.

Free Thermal Imaging on Every Clackamas County Inspection

The county's wet climate and crawlspace-heavy housing stock make thermal imaging essential. It finds moisture intrusion, insulation gaps, and electrical anomalies invisible to the eye. Included at no extra charge on every inspection.

Learn More →
EPA Radon Zone 1

Radon Testing in Clackamas County

Clackamas County carries EPA Radon Zone 1 designation, the highest risk category in the country. Radon is a colorless, odorless radioactive gas produced naturally by uranium breaking down in soil and rock. It seeps into homes through crawlspace soil, foundation cracks, and sump areas. The county's geology produces elevated radon across most of its area.

You cannot smell or see radon. The only way to know your home's level is to test. Many buyers assume a newer home or a home with a mitigation system doesn't need testing. Not accurate. Passive systems can fail, and levels vary by soil, foundation, and ventilation. Your neighbor's result doesn't predict yours.

We recommend radon testing on every Clackamas County inspection. If levels exceed 4 pCi/L (the EPA action level), a mitigation system typically costs $800 to $1,500. Reasonable to resolve before closing. Much harder after.

Learn About Radon Testing →
Radon facts for Clackamas buyers
#2
Second-leading cause of lung cancer in the U.S. After smoking. About 21,000 deaths per year nationally.
1 in 4
Portland metro homes test above EPA action level Individual testing is the only way to know.
48h
Test takes 48 hours Continuous electronic monitor placed at the start of the inspection.
$150
Added to your inspection Standalone testing is $195. Add it at booking and save $45.

Simple, Flat-Rate Pricing

No hidden fees, no surprise add-ons. Thermal imaging is included on every inspection.

Starter Standalone Inspection
$395up to 1,000 sq ft
  • Full home inspection
  • Free thermal imaging
  • Roof & crawlspace
  • Detailed digital report
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Best Value Inspection + Radon + Mold
$740up to 1,000 sq ft
  • Full home inspection
  • Free thermal imaging
  • Detailed digital report
  • EPA-certified radon test
  • Mold air sampling & lab results
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See our full pricing page for all size ranges.

What people say about Russ

Real reviews from clients across Portland Metro & SW Washington.

Clackamas County Home Inspection FAQs

Questions Clackamas County buyers ask most before booking.

Yes. Trusted Home Inspections is based in Oregon City, the county seat, and serves every community in Clackamas County. Lake Oswego, West Linn, Milwaukie, Happy Valley, Clackamas, Gladstone, Canby, Damascus, Sandy, Estacada, Molalla, Wilsonville, and surrounding unincorporated areas. Russ is available 7 days a week.
Inspections start at $395 for homes up to 1,000 sq ft and scale by square footage up to $795 for homes up to 5,000 sq ft. Free thermal imaging is included at every price point. See full pricing at trustedhome.org/pricing.
It depends on the area and era. Older Oregon City and Milwaukie homes often have galvanized plumbing, aging panels, and crawlspace moisture. Happy Valley and Damascus tend to be newer with CPVC and drainage concerns. Lake Oswego and West Linn have a mix of mid-century and luxury homes where deferred maintenance on complex systems is common. Underground oil tanks are a real concern in pre-1990s homes across the county.
Yes. Thermal imaging is included on every inspection at no extra charge. Most inspectors in the area charge $150 to $250 for this as a separate add-on. Russ uses it as a standard tool to find hidden moisture, insulation gaps, and electrical hot spots. Learn more.
Yes. Clackamas County is an EPA Zone 1 radon area, the highest risk category. Radon is the second leading cause of lung cancer in the US. Testing is the only way to know. Add radon testing to your inspection for $150, or book standalone for $195.
The inspection covers the home structure, systems, and components visible and accessible at the time of inspection. Septic and wells require separate specialist evaluations. Russ explains what to look for and who to contact during the walkthrough. Rural properties in Sandy, Estacada, Molalla, and Canby commonly use private utilities.
The Certified Master Inspector® (CMI®) is the highest credential in the home inspection industry, held by the top 3% of working inspectors. It requires a verified track record of completed inspections, education, and peer review. Russ Motyko is Oregon City's only CMI® with 2,400+ inspections and 12 years of Licensed General Contractor experience.
Most single-family inspections take 2.5 to 4 hours depending on size, age, and complexity. Larger Lake Oswego and West Linn homes with pools, finished basements, or detached structures may run longer. The inspection is not rushed.
Reports are delivered digitally through Spectora with photos, video, severity ratings, and plain-language explanations for every finding. Most reports go out the same day. Unlimited follow-up is included.
Yes. Trusted Home Inspections is veteran-owned. 10% military discount (MILITARY10) for veterans, active duty, reservists, National Guard, and military families. 10% first responder discount (RESPOND10) for police, fire, EMTs, paramedics, dispatchers, active or retired.

Inspected and Written by Russ Motyko, CMI®

Russ Motyko, Certified Master Inspector, Oregon City based, serving Clackamas County
Oregon CMI® — License #1898

Russ is Oregon City's only Certified Master Inspector® with 12 years of Licensed General Contractor experience. He has completed more than 2,400 inspections across the Portland metro and SW Washington. Bilingual in English and Russian, a U.S. Army Reserve Non-Commissioned Officer, and owner of Trusted Home Inspections.

Credentials: Certified Master Inspector® (top 3% of the industry), Oregon OCHI License #1898, Washington DOL License #1856, Oregon CCB #254518. InterNACHI member. Has trained 100+ inspectors and taught Washington State home inspection courses.

Why this page exists: Clackamas County is Russ's home county. He lives in Oregon City and inspects somewhere in the county nearly every working day. This page is written and maintained by the inspector who actually does the work, not by an agency.

Read Russ's full bio →

Serving Portland Metro & Southwest Washington

Available 7 days a week within a ~35-mile radius of Portland. Not sure if we cover your area? Just call.

~35-mile radius from Portland
Available 7 days a week
Dual-licensed OR & WA
Oregon state-licensed home inspector seal
Oregon Certified OCHI Lic. #1898
Washington state-licensed home inspector seal
Washington Licensed DOL Lic. #1856

Multnomah County home inspections. Portland and the rest of Multnomah County are full of older housing stock, including 1920s craftsman bungalows in SE Portland, Pearl District lofts, and mid-century homes in NE Portland. Older homes mean knob-and-tube wiring, cast iron drains, and aging foundations. I’ve inspected hundreds of homes across Multnomah County and know exactly what to look for in each neighborhood.

Don’t see your city? We likely cover it.

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Available 7 days a week. Online booking open 24/7. From Lake Oswego to Molalla, you get Russ.