Five Corners, Washington Home Inspection: Find the Gray Pipe Before It Finds You

Five Corners fills the square between I-205 and SR-503 with houses built from the 1970s through the 1990s, most of them on lots under a quarter acre. A good share of the 80s and early-90s stock was plumbed with polybutylene, and every one of those homes runs on chlorinated city water, which is exactly what eats it. Russ Motyko is a Certified Master Inspector® holding Washington DOL license #1856, with 10+ years of inspection experience and a licensed general contractor's eye for what a builder skipped.

Russ Motyko, Certified Master Inspector performing a home inspection in Five Corners Washington
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These Homes Have History. So Do I.

Five Corners Washington suburban home, typical housing stock inspected by Trusted Home Inspections
Five Corners, Washington

Five Corners takes its name from an old five-pointed road junction, and the 5.9 square miles around it filled in fast: about 21,000 people now, all of them living inside census-defined urban area. I-205 pins the southwest side, SR-503 runs the east edge, and between those two lines you get street after street of 1970s ranches, 1980s tract houses, and 1990s cul-de-sacs on lots that rarely reach a quarter acre. Most of it feeds Evergreen Public Schools, with a slice at the north end zoned to Battle Ground. Five Corners sits inside Clark County, tucked between Vancouver to the south, Orchards to the east, Hazel Dell and Salmon Creek to the west, and Brush Prairie up toward Battle Ground. Buyers here often add radon testing to the inspection.

I have 10 years of inspector experience, and I am also a licensed general contractor. My specialty was difficult and high-end framing, but I've replaced roofs, ran wiring, poured concrete, waterproofed showers, set tile, replaced siding and windows, installed drywall, and set doors. That background is what lets me read a home the way a builder does, and spot what they got wrong, or what looks like it was done without a permit.

When I walk a 1988 Five Corners tract house, the first stop is the water heater closet. I want to see what color the supply stubs are. Gray flexible pipe with crimp rings means polybutylene, and then I trace it: the main shutoff, the hose bib penetrations, the manifold if there is one, and the ceiling below any second-floor bath. I also press on the bottom edge of the hardboard siding near the downspouts, because on these small lots the roof water lands within a few feet of the wall.

I hold Certified Master Inspector® certification, Washington DOL license #1856, and Oregon OCHI license #1898. Every inspection includes free infrared thermal imaging. On a house with plastic supply fittings hidden in the walls, that camera can be the difference between finding a leak now and finding it next spring.

Five Corners (Clark County) Housing Market

Showing Clark County, WA data (Redfin does not publish city-level stats for this area).
$548,767
Median sale price
41 days
Median days on market
536
Homes sold per month
2,121
Homes for sale now
Live Market Data · Updated September 2026
• Source: Redfin Data Center

Five Corners Homes by Construction Era

Almost every house in Five Corners went up in a thirty-year stretch, so the build year alone will not tell you much. What changes is the plumbing that came with each decade, and how hard the last three owners worked at keeping the place up.

Pre-1965 Homes

This is the thinnest slice of the Five Corners market. A scattering of houses stood along the county roads that met at the five-pointed junction before any of the subdivisions arrived, and the grid grew around them. You can spot them by the setback: they sit farther back from the street than the tract houses on either side.

Every one of these has been remodeled at least twice. That is the whole inspection problem. Original framing, a partial electrical upgrade from one decade, a kitchen redone in another, and a bathroom addition that may or may not appear in county permit records. The systems rarely match each other, and the joints between them are where things go wrong.

When these homes hooked up to public sewer, the old side sewer line often stayed in place under the yard. Age and root intrusion in that buried line are worth asking about, and a sewer scope is a separate service that answers the question directly.

Common findings in pre-1965 Five Corners homes
Mismatched system updates
Three decades of partial work stacked on original construction. The failures show up where one era's work meets another's.
Original fuse panels or early breaker boxes
Service capacity built for a 1950s household. Insurance carriers ask about panel type before they write the policy.
Aging side sewer line to the street
Buried since the home was connected. Root intrusion and settled joints are answered by a sewer scope, which is a separate service.
No vapor barrier under the house
Bare soil in the crawlspace pushes moisture into joists and subfloor year after year. Rot and pest damage follow.
Additions with no permit record
Unincorporated Clark County paperwork from this period is thin. I document what I see and note what the file does not cover.
Home Risk Quiz

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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.

Five Corners Area by Area

Five Corners reads as one continuous suburb, but the pockets inside it were platted in different decades and plumbed with different materials. Here is what changes as you move across those 5.9 square miles.

The Junction
Mixed eras

The streets closest to the five-pointed intersection the area is named for. Housing here fronts arterial traffic, so window glazing, exterior door seals, and wall insulation all matter more than they do three blocks in. A few of the oldest houses in Five Corners sit along these roads, set back farther than their neighbors. Expect layered remodels and permit files that do not tell the whole story.

1970s Ranch and Split-Entry Streets
1970s

The first wave of platting. Long straight blocks of single-story ranches and split-entries with attached garages and crawlspace foundations. Federal Pacific panels and 100-amp service are the two things I check first. Original aluminum-frame windows have mostly been replaced by now, and how carefully that was done varies house to house. The last of these builds reach into the start of the polybutylene window.

The Poly-B Belt
Mid-1980s - early 1990s

The subdivisions that went up during the biggest build years, and the highest concentration of gray supply pipe in Five Corners. Two-story tract plans, hardboard lap siding, and a water heater in the garage where the pipe stubs are easy to read. If the house still has original plumbing, I trace it as far as it's visible and photograph every fitting I can reach. Nothing else on the report moves the number like this does.

Late-1990s Cul-de-Sac Pockets
1995 - 2002

The last buildable gaps between older plats, filled with short dead-end streets and pie-shaped lots. Plumbing here is usually copper rather than polybutylene, so the focus shifts. Roofs are past their rated life, furnaces and heat pumps are at replacement age, and fogged window units are near universal. The pie lots also concentrate roof runoff toward the narrow end of the yard.

The I-205 Edge
Mixed eras

The southwest boundary, where back fences face the freeway corridor. Sound is the first thing buyers notice, and it is usually a wall-insulation and glazing question rather than a structural one. Thermal imaging is genuinely useful along here, because it can show where the insulation actually is instead of where the listing says it is. Attic bypasses around can lights and bath fans show up the same way.

Quarter Acre and Under
Mixed eras

Most of Five Corners, honestly. Lots under a quarter acre mean five to ten feet of side yard, gas meters and condensers pressed against the wall, and crawlspace hatches you have to work at to reach. Downspouts discharge close to the foundation because there is nowhere else to send the water. Sheds and shop buildings often sit right on the property line with wiring nobody permitted.

What Makes Five Corners Homes Different to Inspect

Three things set this area apart: the plumbing that came with its build years, lots too small to move water around, and thirty-year-old houses whose upkeep went in wildly different directions.

Polybutylene on City Water

Polybutylene went into homes built roughly between 1978 and 1995, and a real share of the Five Corners 1980s and early-1990s stock has it. The pipe degrades from the inside when chlorinated water runs through it, and every home here is on public water. The fittings usually go first, weeping at the crimp ring inside a wall where nobody sees it for months. Gray pipe at the water heater is the tell. A repipe can run $10,000 to $20,000, and some insurers will not write a policy until it is done.

Poly-B installed roughly 1978 to 1995

Small Lots, Nowhere for Water to Go

Lots here are typically under a quarter acre, which leaves a side yard you can cross in three steps. Roof water comes off a full-size house onto a small footprint, so downspouts discharge within a couple of feet of the wall, splash back onto the siding, and soak the soil right where the foundation is. That is how hardboard siding fails at the bottom course and how crawlspaces get wet in a neighborhood with no slope to blame. I follow every downspout to where it actually ends.

Most lots under a quarter acre

Same Street, Different Histories

Two houses on the same Five Corners block came out of the same plan set in the same year. Thirty-five years later one has a new roof, a repipe, and a serviced furnace, and the other has the original everything plus a garage conversion nobody pulled a permit for. Build year tells you almost nothing here. Maintenance history tells you everything, and most of it is not in the listing. That is what the report is for.

Most homes now 30 to 50 years old

Real Inspection Photos

Common Findings in Five Corners Homes

Real photos from Russ's inspection reports in Five Corners and greater Vancouver, showing issues common in local homes. Every report includes photos like these.

See a full sample report

What We Check in a Five Corners Home

Every inspection covers all major systems and accessible areas, roof to crawlspace. We physically enter accessible attics and crawlspaces. We operate the systems we can safely access and test a representative sample of components. 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.

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 Five Corners Inspection

A cracked plastic supply fitting behind Five Corners drywall does not announce itself. It drips, the wall stays wet, and the stain arrives months later. Infrared can pick up the cool damp patch while it is still small, and it can show missing wall insulation in the homes along the freeway edge. Included at no extra charge on every inspection, because on this housing stock it is the tool that pays for itself.

How Infrared Thermal Imaging Works →
Washington State DOH Guidance

Radon Testing in Five Corners

Clark County's radon potential varies by location and soil type. The Washington State Department of Health recommends testing every home in Washington, regardless of zone designation. Radon is a colorless, odorless radioactive gas that forms as uranium breaks down in soil and rock, and it enters through crawlspace soil, foundation cracks, and utility penetrations.

Five Corners is dense enough that buyers hear a lot of secondhand test results from neighbors. Those numbers are worth nothing to you. Two identical tract houses forty feet apart can read differently, because the path soil gas takes depends on the foundation, the penetrations, and how the house is ventilated. Your house is the only house your test describes.

Test on every Five Corners inspection. If the result comes back above 4 pCi/L, which is the EPA action level, a mitigation system generally costs $800 to $1,500 and works well. Handling it before closing is far simpler than handling it after.

Learn About Radon Testing →
Radon facts for Five Corners buyers
#2
Second-leading cause of lung cancer in the U.S. After smoking. Responsible for about 21,000 deaths per year nationally.
DOH
Washington recommends testing every home State Department of Health guidance applies regardless of zone designation. 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 $225. Add it at booking and save $75.

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What people say about Russ

Real reviews from clients across Portland Metro & SW Washington.

Five Corners Home Inspection FAQs

Questions Five Corners buyers ask most before booking an inspection.

Five Corners home inspections start at $395 for homes up to 1,000 sq ft and scale by square footage up to $845 for homes up to 5,000 sq ft. Free thermal imaging is included at every price point. Radon testing adds $150 when you book it with the inspection. See full pricing at trustedhome.org/pricing.
Look for gray, and sometimes blue or black, flexible plastic supply pipe about half an inch across. The easiest places to spot it are at the water heater, at the main shutoff, and where the water line enters the house. Much of it carries a PB2110 stamp. Polybutylene went into homes built roughly between 1978 and 1995, which covers a real share of Five Corners construction. Russ checks every accessible point and photographs what he finds. A whole-house repipe usually runs $10,000 to $20,000, so this is worth knowing before you close.
Polybutylene supply lines and their crimped plastic fittings top the list in homes from the 1980s and early 1990s. After that: hardboard lap siding from the 1985 to 1996 window swelling along its bottom edges, composition roofs sold as 25-year shingles that are now past 25, furnaces and heat pumps at replacement age, failed seals in builder-grade vinyl windows, and crawlspace vapor barriers that got pushed aside and never put back. Garage conversions and covered patios added without a permit show up often in unincorporated Clark County records.
Almost never. Five Corners is fully urban by census measure, and the homes here run on public sewer and city water. That matters for the plumbing, because chlorinated municipal water is what breaks polybutylene down from the inside. If a property you are looking at does have a well or a septic system, both need separate specialist evaluations under Washington rules. Russ documents what is visible and accessible and tells you who to call.
Clark County radon potential varies by location and soil type. The Washington State Department of Health recommends testing every home in Washington, regardless of zone designation. A test is the only way to know what one house reads, and a neighbor's number tells you nothing about yours. Radon testing is $150 added at booking and $225 as a standalone test, so booking it together saves $75.
Yes. Washington licenses home inspectors under WAC 308-408, and Russ holds Washington DOL license #1856 along with Oregon OCHI license #1898. Plenty of Oregon-based inspectors working the Vancouver market carry only the Oregon license. Ask any inspector you call for their Washington number before you book a Five Corners inspection.
You get a written report with photos, video where it helps, severity ratings, and plain-language explanations of what each finding means and what correcting it normally involves. Russ reports and explains. He does not tell you whether to buy, and he does not coach anyone through a negotiation. That part belongs to you and your agent. Call or text with questions once the report lands. Follow-up is unlimited.
Included at no extra charge on every inspection. On a Five Corners house it earns its keep fast. Polybutylene fittings usually fail as a slow drip inside a wall or behind a cabinet, and the infrared camera can pick up the cool wet patch before a stain reaches the drywall. It can also point to missing wall insulation in the homes that back the I-205 corridor. How infrared thermal imaging works in a home inspection →
Certified Master Inspector® (CMI®) is a board-certified designation from the Master Inspector Certification Board. To qualify, an inspector needs at least three years in the inspection business, 1,000 or more fee-paid inspections and hours of training and education combined, completed professional education, agreement to the board's code of ethics, and consent to periodic criminal background checks. Russ is a Certified Master Inspector® serving Five Corners and the rest of Clark County with 10+ years of inspection experience and 100+ inspectors trained. What the Certified Master Inspector® credential requires →
Yes. Trusted Home Inspections is veteran-owned and takes 10% off the inspection fee for veterans, active duty, reservists, National Guard members, and military families (code: MILITARY10). 10% off the inspection fee is also available for police, fire, EMTs, paramedics, dispatchers, active or retired (code: RESPOND10). See full details at trustedhome.org/military-discount.
Russ Motyko, Certified Master Inspector, Portland Oregon
Russ Motyko
Certified Master Inspector®  |  OR #1898  |  WA #1856  |  CCB #254518

Russ is Oregon City's only Certified Master Inspector® and a licensed general contractor. He has completed more than 3,000 inspections across the Portland metro and SW Washington. Bilingual in English and Russian, a U.S. Army Reserve Noncommissioned Officer, and owner of Trusted Home Inspections.

Serving Portland Metro & Southwest Washington

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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 what to look for in each neighborhood.

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