Hillsboro's Housing Market Spans Every Era. Your Inspector Should Know All of Them.

A 1955 ranch near downtown Hillsboro, a 1988 split-level in Reedville, and a new build in South Hillsboro can all be listed at the same price. Those three homes have completely different inspection profiles. As a Certified Master Inspector® with 10+ years of home inspection experience and 12 years of contractor experience, Russ knows what to look for in each one.

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Russ Motyko, Certified Master Inspector performing a home inspection
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Inspections in Oregon & Washington
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Hillsboro Housing Market

$500,822
Median sale price
35 days
Median days on market
120
Homes sold last month
233
Homes for sale now
Live Market Data · Updated March 2026
• Source: Redfin Data Center

Hillsboro Know-How

These Homes Have History. So Do I.

A Hillsboro Oregon home representative of the Washington County housing stock Russ inspects
Hillsboro, Oregon

Hillsboro is one of the Portland metro's most varied housing markets. You have Craftsman bungalows along Baseline Road, mid-century ranches in Reedville, transit-era homes in Orenco Station, CPVC-plumbed builds in Tanasbourne, and brand-new construction across South Hillsboro. Each era has its own inspection profile, and a real Hillsboro inspection looks different in each one.

Not only do I have 10 years of inspector experience, I have also worked as a Contractor for 12. While my specialty is difficult and high-end framing jobs, 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 - just to name a few. That dual perspective is what makes the difference in an older home, and it is what catches the shortcuts in a new one.

When I walk a 1955 ranch off 10th Avenue, I am not just checking boxes. I am reading the home the way a builder would: looking at what was done right, what was modified without permits, and what previous owners tried to hide. When I walk a new build in South Hillsboro, I am looking for the grading, flashing, and HVAC mistakes that always show up on a freshly disturbed lot. Either way, you deserve that level of scrutiny.

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.

Know What You Are Buying

Hillsboro Homes by Construction Era

The decade a home was built tells you almost everything about what the inspection will focus on. Hillsboro has more construction eras represented in its active market than almost any other city in the Portland metro.

Pre-1965 Homes

Hillsboro's oldest neighborhoods surround historic downtown and run along Baseline Road and 10th Avenue. These are postwar and earlier homes with real architectural character. They also carry systems that are 60 to 80 years old and have often been partially updated across multiple owners in ways that create inspection puzzles.

Galvanized steel supply pipes in these homes have corroded from the inside for 60 or more years. Internal diameter is often significantly reduced, water pressure is noticeably diminished, and discoloration at fixtures is common. Full replacement runs $10,000 to $25,000. Knowing this before you make an offer changes how you think about the price.

Sewer scope inspection is especially valuable here. Cast iron drain lines from this era have been in the ground for 65 to 80 years. Scale buildup, joint seepage, and tree root intrusion are consistent findings when these lines are scoped.

Common findings in pre-1965 homes
Galvanized steel supply pipes
Corroded internally. Replacement $10,000 to $25,000 depending on size.
Cast iron drain lines
Scale, joint seepage, and root intrusion after 65+ years. Sewer scope essential.
Crawlspace moisture and wood rot
Foundations without modern waterproofing managing decades of Pacific NW humidity.
Original or partially updated electrical
Multiple-decade patchwork updates that do not always meet current code.
Roofs at or beyond service life
Often re-roofed once or twice. Age and layers documented in report.

1965–1985 Homes

This era covers Hillsboro's suburban expansion as Washington County grew rapidly. Ranch homes and split-levels from this period are well-represented throughout Reedville and the established neighborhoods west of downtown. These homes are solid and often well-sited, but this era generates the most costly inspection findings per dollar of purchase price in Hillsboro's market.

Polybutylene plumbing is the finding that matters most in this era. Installed under names like Quest and FlowGuard from the late 1970s through the mid-1990s, polybutylene degrades from chlorine exposure in municipal water. Fittings fail first, and failures can be sudden and severe. Insurance carriers are increasingly requiring replacement before coverage is offered. Identifying it before you close gives you a real negotiating tool.

Common findings in 1965–1985 homes
Polybutylene plumbing
Degrades from chlorine. Sudden fitting failure. Insurance often requires replacement. $10,000 to $20,000 to replace.
Federal Pacific and Zinsco panels
Documented safety concerns. Insurance carriers frequently flag or decline coverage.
Aluminum branch circuit wiring (1965–1973)
Fire risk at connection points. Requires CO/ALR devices or full replacement.
Crawlspace moisture and vapor barrier failure
Present in the majority of pre-2000 homes in Washington County's clay soils.
Sewer lines approaching end of useful life
Orangeburg and early cast iron lines in this era show significant deterioration. Sewer scope critical.

1985–2005 Homes

The tech boom transformed Hillsboro during this period. Intel's expanding campuses drove massive residential development across Orenco, Tanasbourne, and western Washington County. These homes look good and feel modern, but they are now 20 to 40 years old and carry their own specific inspection concerns that are easy to miss without knowing what to look for.

CPVC plumbing was widely used in Oregon new construction from about 1995 through 2005. Oxidative embrittlement causes CPVC to become brittle over time, especially near heat sources and in homes with more aggressive water chemistry. We look closely at every CPVC installation for cracking at fittings, discoloration, and improper support. The Orenco Station community is heavily represented in this era.

Common findings in 1985–2005 homes
CPVC plumbing brittleness
Becomes brittle with age and heat exposure. Cracking at fittings is the early warning sign.
Composite wood siding failure
1990s hardboard and wood-fiber siding absorbs moisture in wet climates. Fails from the bottom up.
Roofs reaching end of service life
25-year shingles from 1998 to 2002 are now past expected lifespan. Replacement $10,000 to $20,000.
Radon still present
Washington County has elevated radon potential regardless of home age. Test every purchase.
Deck ledger connection deficiencies
A common code-era deficiency in homes with attached decks from this period.

South Hillsboro and New Construction

South Hillsboro is one of the most ambitious residential developments in Oregon history: thousands of homes being built across several hundred acres on Hillsboro's southern edge. Buyers sometimes assume that because the home is new, inspection is not necessary. That assumption is expensive when it turns out to be wrong.

New construction inspection in South Hillsboro consistently finds grading and drainage issues on recently disturbed lots, HVAC ductwork installation defects, attic insulation and ventilation deficiencies, and window flashing details that do not meet manufacturer requirements. These are all findings that are the builder's responsibility before you close, and only yours after.

The 11-month warranty inspection is specifically designed for South Hillsboro buyers who want to document defects before the builder's one-year warranty expires. The clock starts at closing, not when you discover the problem.

Common findings in new construction
Grading and drainage toward foundation
Freshly disturbed lots in South Hillsboro often drain toward the foundation. Common and expensive post-close.
HVAC installation defects
Improperly sealed ducts, disconnected exhaust vents, and commissioning errors found regularly.
Flashing deficiencies at windows and doors
Improper installation allows moisture into wall assemblies that look fine from 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)
Washington County geology produces radon regardless of the home's 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

Hillsboro Area by Area

Each part of Hillsboro has its own housing age, character, and inspection profile. Here is what buyers typically encounter in each area.

Historic Downtown & Central Core
1920s – 1960s

Craftsman bungalows, early ranch homes, and mid-century construction surround Hillsboro's historic downtown along Baseline Road. Real character, real age. System updates are the conversation here. Buyers need accurate cost expectations for plumbing, electrical, and foundation work.

Orenco Station
Late 1990s – 2000s

One of the Portland metro's most intentionally designed transit communities, built around the MAX light rail. Homes are now 20 to 25 years old. CPVC plumbing and composite siding era concerns apply throughout. Well-maintained community, specific inspection focus required.

Reedville & West Hillsboro
1970s – 1980s

Mid-generation suburban development with ranch and split-level homes on modest lots. Polybutylene plumbing is most likely present in this area, along with Federal Pacific and Zinsco panels. Use inspection findings as a negotiating foundation. Solid bones, system-update budgets needed.

Tanasbourne & North Hillsboro
1990s – 2000s

Blends into Beaverton's western communities with planned subdivisions from the 1990s and 2000s. High tech-sector employment drives fast-moving demand here. CPVC plumbing era. Homes move quickly, which makes responsive short-notice inspection scheduling genuinely important.

South Hillsboro
2015 – present

Oregon's largest active residential development. New homes, multiple builders, planned communities on recently urbanized land. New does not mean defect-free. Grading, HVAC, and flashing issues are regular findings. The 11-month warranty inspection protects buyers here before their builder warranty expires.

Witch Hazel & South Washington County
Mixed eras

Rural and transitional properties along Hillsboro's growth edges. Mixed housing ages on larger lots. Some properties on well and septic systems, which require separate specialist evaluations. Outbuildings and acreage add scope. Clay soil drainage issues are particularly relevant on larger parcels.

Washington County Risk Factors

What Makes Hillsboro Homes Different to Inspect

Hillsboro's soils, climate, and history create specific inspection concerns that go beyond what you would find in other markets.

Expansive Clay Soils

Washington County's Tualatin Valley sits on expansive clay soils that swell when wet and shrink when dry. This seasonal movement cycle affects foundations, drainage infrastructure, and any structure with ground contact throughout Hillsboro. Distinguishing normal seasonal behavior from structurally significant movement is part of what a thorough inspection evaluates.

Affects foundations across all eras

Drainage on Flat Terrain

The Tualatin Valley's relatively flat terrain, combined with clay soil's poor permeability, means water management around foundations matters more here than in markets with naturally draining soil. Grading toward the foundation, downspout discharge too close to the structure, and window wells without drainage are findings we see consistently in Hillsboro home inspections.

Crawlspace moisture very common pre-2000

Polybutylene Plumbing Prevalence

Hillsboro's 1975 to 1995 housing stock has a high rate of polybutylene plumbing, installed during the same era that Hillsboro's growth was accelerating most rapidly. This plumbing material was banned from new installation after widespread failures were documented. Identifying it before closing is one of the most important things an inspection can do for buyers of homes from this era.

Replacement: $10,000 to $20,000
Full Scope Inspection

Everything We Check in a Hillsboro 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 Hillsboro Inspection

Washington County's clay soils and high rainfall mean moisture gets into wall assemblies and crawlspaces in ways that are invisible to the eye. The infrared camera finds it. Electrical hot spots, insulation gaps, and HVAC leaks are also standard thermal findings. Included at no extra charge because in this climate it is not optional equipment.

Learn More →
Elevated Radon Zone

Radon Testing in Hillsboro

Washington County falls within the elevated radon exposure zone for the Portland metro area. 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.

County-level designations show elevated potential, but radon levels vary significantly from property to property based on soil conditions, foundation type, and ventilation. Your neighbor's test result does not predict yours. Every home needs its own test.

We recommend radon testing on every Hillsboro inspection. If levels exceed 4 pCi/L (the EPA action level), a mitigation system typically costs $800 to $1,500. That is a reasonable seller negotiation item before closing. It is much harder to address after.

Learn About Radon Testing →
Radon facts for Hillsboro 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.

Transparent Pricing

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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Most Common Inspection + Radon
$545up to 1,000 sq ft
  • Full home inspection
  • Free thermal imaging
  • Detailed digital report
  • EPA-certified radon test
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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.

Client Stories

What people say about Russ

Real reviews from clients across Portland Metro & SW Washington.

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Common Questions

Hillsboro Home Inspection FAQs

Questions buyers in Hillsboro and Washington County ask most before booking.

Most Hillsboro home inspections take 2.5 to 4 hours depending on the size, age, and condition of the home. Older homes in the downtown core or Reedville area often run toward the longer end because there is more to document. New construction in South Hillsboro tends to be more predictable in layout, though the scope is identical. You are welcome to attend the entire inspection or join for the walkthrough at the end.
Polybutylene is a gray plastic plumbing material installed in homes from the late 1970s through the mid-1990s. It was sold under brand names including Quest and FlowGuard. Chlorine in municipal water degrades polybutylene over time, and fittings fail suddenly rather than developing slow leaks. Insurance carriers have increasingly moved to requiring replacement before offering coverage on homes with polybutylene. It is present in a significant portion of Hillsboro homes built from 1975 to 1995. Replacement typically costs $10,000 to $20,000. Identifying it before you close is one of the most important things a Hillsboro inspection can do.
Yes. New construction inspection is one of the most important services we offer for South Hillsboro buyers. Code inspections during construction check specific phases at minimum standards. They don't evaluate the finished home. Our inspections in new South Hillsboro builds regularly find grading that directs water toward the foundation, HVAC installation defects, improper flashing at windows and doors, and insulation gaps in attics. These are all the builder's responsibility before you close, but only if you have a written inspection report documenting them. We also offer an 11-month warranty inspection for buyers who want to catch issues before their builder warranty expires.
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, not speed. Most reports go out the same day. Older homes with more findings may take until the next morning. After you get your report, call or text with any questions. Unlimited follow-up is included.
We serve the full Portland metro and SW Washington within approximately a 35-mile radius of Oregon City, which covers all of Washington County including Hillsboro, Beaverton, Tigard, Tualatin, Lake Oswego, and surrounding communities. We're available 7 days a week and can often accommodate same-week bookings in the fast-moving Hillsboro market. Call or text (971) 202-1311 if you have a tight timeline.
Thermal imaging is included at no extra charge on every inspection. Competitors in the Portland metro typically charge $150 to $250 for this as a separate add-on. Russ includes it because the infrared camera consistently reveals moisture intrusion, insulation voids, and electrical anomalies that are invisible to the naked eye. 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 inspection 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.
That decision is yours 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 negotiating tool. Russ is available after delivery to help you understand what is critical, what is manageable, and how to use the findings effectively. Read more: what happens after a home inspection in Oregon.
Yes. Trusted Home Inspections is veteran-owned and offers a 10% military discount for veterans, active duty, reservists, National Guard members, and military families. Mention your service when you book. See full details at trustedhome.org/military-discount.

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.

Portland Gresham SE Portland NE Portland NW Portland North Portland Troutdale Bethany Sellwood Pearl District Fairview

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