Clackamas Homes Span 70 Years of Building. Your Inspector Should Know Every Era.

From 1950s ranch homes on oversized lots to 1980s split-levels and newer subdivision builds, Clackamas is one of the most varied housing markets in Clackamas County. Russ Motyko is based in Oregon City, right next door, and has inspected homes across unincorporated Clackamas for over a decade. As a Certified Master Inspector® with 10+ years of inspection experience and 12 years of contractor experience, he knows what to look for in every decade.

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Russ Motyko, Certified Master Inspector performing a home inspection in Clackamas Oregon
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Clackamas Know-How

These Homes Have History. So Do I.

A Clackamas Oregon home representative of the unincorporated Clackamas County housing stock Russ inspects
Clackamas, Oregon

Clackamas is unincorporated Clackamas County, which means the housing stock here is wide-ranging and doesn't follow a single pattern. You'll find 1950s and 1960s ranch homes on oversized lots sitting alongside 1980s split-levels and 1990s subdivision builds, with newer infill filling in the gaps. A 1965 ranch in Clackamas may have original galvanized plumbing and a Federal Pacific panel. A 1988 split-level two streets over may have CPVC that has spent 35 years in a Pacific Northwest crawlspace. A 2005 home in a newer subdivision has its own set of concerns. That diversity is exactly why generic checklist inspections fall short here.

Not only do I have 10 years of inspector experience, I have also worked as a Contractor for 12. My specialty is difficult and high-end framing jobs, but I have replaced roofs, built, painted, and installed cabinets, ran wiring, poured concrete, waterproofed showers, set tile, replaced siding and windows, installed drywall, and set doors. That background lets me read a home the way a builder does, and spot what they got wrong.

I'm based in Oregon City, which means I'm in Clackamas County every day. When I walk an older ranch in Clackamas, I'm not checking boxes. I'm looking at whether the galvanized supply pipes have visible corrosion at fixtures, whether the panel is a brand known for breaker failure, and whether the crawlspace vapor barrier has lasted 40 years under Pacific Northwest humidity. Those aren't textbook items. That's experience.

I hold Certified Master Inspector® certification (top 3% of the industry), Oregon OCHI license #1898, and Washington DOL license #1856. Every inspection includes free thermal imaging.

Clackamas (Clackamas County) Housing Market

Showing Clackamas County, OR data (Redfin does not publish city-level stats for this area).
$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
Know What You Are Buying

Clackamas Homes by Construction Era

Clackamas has homes from the 1950s through today. Each decade carries its own inspection profile. Knowing which era you're buying into tells you a lot about what the inspection will find.

Pre-1965 Homes

This era produced many of Clackamas's most spacious single-story ranches. Larger lots, solid original construction, and homes that have been lived in for 60 or more years. The appeal is real. The inspection priorities are equally real.

Original galvanized steel supply lines corrode from the inside out, gradually reducing water pressure before failing. After 60-plus years in service, internal diameter is often significantly reduced and discoloration at fixtures is a regular finding. Full replumbing runs $10,000 to $25,000 depending on home size. Sewer lines from this era, cast iron in most cases, have been in the ground just as long and warrant a sewer scope. Electrical panels are often Federal Pacific or fuse-based, and the wiring may include knob-and-tube in original sections. Crawlspace vapor barriers, if present, are often original and compromised.

These homes take longer to inspect because there is more to document. Plan accordingly.

Common findings in pre-1965 homes
Galvanized steel supply pipes
Corroded internally. Restricted flow and discoloration common. Replacement $10,000 to $25,000.
Cast iron drain lines
60-plus years underground. Scale, joint seepage, and root intrusion are consistent findings. Sewer scope essential.
Federal Pacific panels and fuse boxes
Documented breaker failure history. Insurance carriers frequently flag or decline coverage on homes with these panels.
Knob-and-tube wiring in original sections
Common in homes that haven't been fully rewired. Often uninsurable without panel and wiring updates.
Crawlspace moisture and failed vapor barrier
Older foundations without modern waterproofing manage decades of Pacific NW humidity poorly.

1965–1985 Homes

The 1970s and 1980s brought significant residential development into Clackamas County as Portland expanded outward. Homes from this era are often the most complex to inspect because they've been through multiple ownership cycles and partial updates. A bathroom may be replumbed with copper while the rest of the house still has galvanized. The panel may have been upgraded but the wiring behind the walls was never touched.

Zinsco panels are common in homes from this decade and carry the same documented breaker failure concerns as Federal Pacific. Roofing from this era is at or past its expected service life. HVAC systems that were new in 1980 are now 40-plus years old and have usually been limping along on deferred maintenance. These are the homes where what you see at the showing and what the inspection finds tend to diverge the most.

Common findings in 1965–1985 homes
Zinsco electrical panels
Documented breaker failure history. Common in Clackamas County homes from the 1970s and early 1980s.
Partial plumbing updates
One section updated, the rest original. Mixed materials and incomplete upgrades are standard in this era.
Roofing past expected service life
40-plus-year-old homes often have roofing that has been re-done once. Age, condition, and remaining life are documented.
Aging HVAC systems
Furnaces and heat pumps from the early 1980s are at or well past expected service life. Often operating on borrowed time.
Crawlspace moisture
Older vapor barriers and foundation drainage common on Clackamas County's hillside and flat lots alike.

1985–2005 Homes

Homes built from roughly 1987 through the mid-2000s often used CPVC for interior supply plumbing. This material was widely adopted in the Pacific Northwest and has been failing at an accelerating rate. CPVC becomes brittle as it ages, especially in crawlspace conditions, and can crack with minimal stress. In my experience inspecting homes throughout Clackamas County, CPVC is one of the most consistent findings in this era's homes.

Roofing on homes from the mid-1990s is reaching the end of a typical composition shingle lifespan in Oregon's wet climate. Composite wood siding from the same period absorbs moisture and fails from the bottom up. These homes look solid at a showing. The inspection tells a different story when you get under them.

Common findings in 1985–2005 homes
CPVC plumbing brittleness
Becomes brittle with age and heat exposure. Cracking at fittings is the early warning sign. Replacement $8,000 to $20,000+.
Composite wood siding failure
1990s hardboard and wood-fiber siding absorbs moisture in wet climates. Fails from the bottom up, often hidden at grade.
Roofs at or beyond service life
25-year shingles from 1995 to 2003 are at or past expected lifespan. Replacement $12,000 to $25,000+.
Radon in every era
Clackamas County is EPA Zone 1 regardless of home age. Test every purchase.
Deck ledger connection deficiencies
A code-era deficiency common in homes with attached decks built during this period.

New Construction

Clackamas has seen consistent new construction activity as the county has grown. Some buyers assume that a new home doesn't need inspection. That assumption is expensive when it turns out to be wrong. Municipal code inspections check minimum standards at specific construction phases. They don't evaluate the finished home.

New construction inspections in Clackamas regularly find site grading issues that direct water toward foundations on recently disturbed lots, construction defects in framing and HVAC installation, and deferred warranty items the builder is responsible for fixing before you close. The 11-month warranty inspection is designed for buyers who want to document defects before the builder's one-year warranty expires. The clock starts at closing. Schedule before you hit 10 months.

Common findings in new construction
Site grading toward foundation
Freshly disturbed lots often drain toward the house. Common and expensive to fix after closing.
HVAC installation defects
Improperly sealed ducts, disconnected exhaust vents, and uncalibrated systems are regular findings in new builds.
Flashing deficiencies at windows and doors
Improper installation allows moisture into wall assemblies that look fine from the outside.
Insulation and ventilation gaps in attic
Thermal imaging finds these. Invisible to the eye and covered by builder warranty if caught in time.
Radon (yes, even in new homes)
Clackamas County geology produces radon regardless of home age. Test every purchase.
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.

Know Your Neighborhood

Clackamas Area by Area

Unincorporated Clackamas County covers a wide mix of residential areas. Here's what buyers typically encounter in each part of this market.

Ranch Home Areas
1950s – 1960s

Clackamas has some of the best original ranch homes in the county, sitting on oversized lots with mature trees and wide setbacks. These homes were solidly built. But 60-plus years means galvanized supply lines, aging drain systems, crawlspaces that have managed decades of Pacific Northwest humidity, and electrical panels from an era before ground fault protection existed. The appeal is real. So is the inspection scope.

1970s–1980s Suburban Builds
1970s – 1985

These homes are often the most complex to inspect in Clackamas. They've been through multiple owners, partial updates, and decades of DIY work. A Zinsco panel is common. Partial plumbing upgrades are common. HVAC systems that were new in 1981 are now on borrowed time. What you see at the showing is rarely the whole picture in this era's homes.

Sunnyside Road Corridor
1990s – 2005

The established subdivisions along Sunnyside Road and the surrounding area grew primarily from the early 1990s through the mid-2000s. Homes here are now 20 to 35 years old and have entered the maintenance phase every house eventually reaches. CPVC plumbing is the main concern in this era. Roofing from the mid-1990s is at or near the end of its service life. Sealants around windows and doors have dried and cracked.

Newer Subdivision Development
2010s – present

Clackamas has seen continued infill and subdivision activity as the county has grown. Newer homes carry less historical risk but construction defects are still regular findings. Site grading, HVAC installation, and flashing details come up consistently in new builds. Municipal inspectors check code compliance at specific phases. They don't evaluate the finished home. That's what a buyer's inspection is for.

Acreage and Rural Properties
Mixed eras

Larger lots on Clackamas's edges, some with outbuildings, wells, and septic systems. These properties add scope to any inspection. Outbuildings are included in what I evaluate. Well and septic evaluations require separate specialists. Properties in unincorporated Clackamas County may also have varying permit histories, especially for additions and finished spaces completed before modern permit requirements.

Unincorporated County Properties
Mixed eras

Work done on unincorporated Clackamas County properties before modern permit requirements may lack documentation. Garage conversions, basement finishes, and additions built without permits show up regularly in this market. An inspector who understands construction can identify physical signs of non-compliant work even without records. That's a meaningful advantage when buying in unincorporated county land.

Clackamas County Risk Factors

What Makes Clackamas Homes Different to Inspect

Clackamas's wide range of housing eras, EPA radon designation, and Pacific Northwest climate create inspection concerns specific to this part of Clackamas County.

EPA Radon Zone 1

Clackamas County carries the highest radon risk designation in the country. Radon is a colorless, odorless gas that seeps into homes through foundation cracks and crawlspace openings. It's the second-leading cause of lung cancer in the U.S. Every home here needs its own test, new or old. The only way to know your level is to test. Radon testing is $150 when added to your inspection.

Highest EPA risk zone designation

Crawlspace Moisture

Crawlspace moisture is the most common significant finding I document in Clackamas County homes. The Pacific Northwest climate guarantees crawlspaces are under constant moisture pressure for six or more months a year, and the older the home, the less likely it is to have adequate protection. The problem often doesn't announce itself upstairs. Floors feel fine. There's no obvious smell. That's exactly why I physically enter every crawlspace on every inspection. Observation from the hatch isn't inspection.

Most common finding in pre-2000 homes

Problem Electrical Panels

Federal Pacific and Zinsco panels are still found regularly in Clackamas homes built from the 1960s through the 1980s. Both brands have documented histories of breaker failure and are frequently flagged or excluded by homeowner insurance carriers. I identify the panel brand on every inspection and document whether it's on the list of known problematic manufacturers. Replacement typically runs $2,500 to $5,000, and is often a condition of getting coverage.

Regular finding in 1960s–1980s homes
Full Scope Inspection

Everything We Check in a Clackamas 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. We do not check boxes. We evaluate the home.

Roof & Attic

Shingles, flashing, gutters, attic insulation, ventilation, and moisture.

Electrical

Panel, breakers, wiring type, outlets, GFCI and AFCI protection.

Plumbing

Supply pipe material, drain lines, water heater, pressure, and fixtures.

HVAC

Furnace, AC, heat pump, ductwork, and distribution. Age and condition noted.

Foundation & Structure

Cracks, settling, retaining walls, and visible structural framing.

Crawlspace

Full physical entry. Moisture, vapor barrier, insulation, and wood rot.

Interior

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

Exterior & Grading

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

Free Thermal Imaging on Every Clackamas Inspection

In older Clackamas County homes, thermal imaging reveals crawlspace moisture migrating through floor systems, electrical anomalies behind walls, and insulation voids that are invisible from below. In newer homes, it finds HVAC leaks and moisture intrusion behind finishes that look fine from the outside. Included at no extra charge because this climate makes it necessary, not optional.

Learn More →
EPA Radon Zone 1

Radon Testing in Clackamas

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 foundation cracks, crawlspace openings, and soil contact. You cannot smell or see it. The only way to know your level is to test.

Elevated radon is a real, recurring finding in Clackamas County, not a theoretical one. I test for radon on a consistent basis in this county and elevated readings come up more often than buyers expect. Your neighbor's result doesn't predict yours. Every home needs its own test, new construction included.

Adding radon testing to your inspection costs $150. If levels exceed 4 pCi/L, the EPA action level, a mitigation system typically costs $800 to $1,500. That's a reasonable item to document before closing. It's much harder to address after.

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

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  • Mold air sampling & lab results
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Common Questions

Clackamas Home Inspection FAQs

Questions buyers in Clackamas and Clackamas County ask most before booking.

Clackamas home 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. Most homes fall in the $495 to $645 range. Free thermal imaging is included at every price point. See full pricing at trustedhome.org/pricing.
The most consistent findings in Clackamas are: crawlspace moisture and failed vapor barriers in pre-2000 homes, CPVC plumbing failure in homes from the late 1980s through mid-2000s, Federal Pacific or Zinsco electrical panels in 1960s through 1980s homes, roofing at or past service life, and elevated radon. Clackamas County is EPA Radon Zone 1. These aren't edge cases. They come up regularly.
Yes. Clackamas County is EPA Radon Zone 1, the highest risk designation in the country. Elevated readings are a regular finding here, not a theoretical concern. Radon testing is $150 when added to your inspection. Standalone testing is $195. If levels are elevated, you have documented information about radon levels before closing. Skipping the test means you own the problem after you close.
CPVC was widely used for interior supply plumbing in homes built from the late 1980s through the mid-2000s in the Pacific Northwest. In crawlspace conditions, it becomes brittle as it ages and can crack under minimal stress. In Clackamas County homes from this era, CPVC condition is one of the first things I check. Partial or full replumbing typically runs $8,000 to $20,000+ depending on home size and accessibility.
Most Clackamas home inspections take 2.5 to 4 hours depending on size, age, and condition. Older ranch homes with original systems and full crawlspaces tend to run longer. That's not a problem. It's what thoroughness looks like. You're welcome to attend the entire inspection or join for the walkthrough at the end.
Thermal imaging is included at no extra charge on every inspection. Competitors typically charge $150 to $250 for this as a separate add-on. In Clackamas County, the infrared camera is especially useful for crawlspace moisture conditions. It shows moisture migration through the floor system that's invisible from below. Learn more about thermal imaging.
The Certified Master Inspector® (CMI®) designation is the highest credential in the home inspection profession, held by the top 3% of the industry. It requires a verified track record of completed inspections, education, and peer review. Russ is Oregon City's only Certified Master Inspector® with 10+ years of home inspection experience and 100+ inspectors trained. Learn more about the CMI® designation.
Your report is delivered through Spectora with high-resolution photos of every significant finding, severity ratings, and plain-language explanations. The priority is accuracy and detail. Most reports go out the same day. After you receive your report, call or text with any questions. Unlimited follow-up is included.
Yes. Trusted Home Inspections is veteran-owned and offers a 10% military discount for veterans, active duty, reservists, National Guard members, and military families. Use code MILITARY10 when booking. A 10% first responder discount is also available for police, fire, EMTs, paramedics, and dispatchers, active or retired. Use code RESPOND10. See full details at trustedhome.org/military-discount.
That decision is yours and your agent's to make. During the inspection contingency period, you can negotiate a price reduction, request repairs or credits, or walk away. None of those options exist after closing. The report is your documentation. Russ is available after delivery to help you understand what is critical, what is manageable, and what requires a specialist to evaluate further.

Where We Inspect

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.

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