Portland Home Inspections

How much does a home inspection cost in Portland?

A standard home inspection in the Portland area costs $400 to $600 depending on home size and age. But smart Portland buyers budget for four inspections, not one: the general inspection, a sewer scope ($150–$250)because Portland's older clay-pipe neighborhoods suffer root intrusion that can cost $5,000 to $25,000 to fix; a radon test ($150–$200) because much of the metro sits in a moderate-to-elevated radon zone; and an oil tank locate for any home built before 1980, since many Portland homes had buried heating oil tanks that need environmental decommissioning if found. Anna Malin of Own It Northwest walks through each below, with the specific cost ranges and why each matters in Portland. Once the reports come back, your agent uses the findings to negotiate repairs and credits with the seller.

Video Walkthrough

Watch: Anna on Portland inspection costs

Read video transcript

Hello, I'm Anna Malin with Own It Northwest.

What are the most common home inspections in the Portland area, and how much do they cost? A standard home inspection in the Portland area costs around $400 to $600 depending on the home's size and age.

The first is a general home inspection. This is a whole-house inspection — it covers the roof, foundation, electrical, plumbing, HVAC, attic, insulation, drainage, and major appliances.

In Portland, there are three other additional inspections that we strongly recommend. One is a sewer scope. This is roughly $150 to $250. It sends a camera through the sewer lateral. It's critical in neighborhoods where clay pipes suffer root intrusion, since replacing a failed line could run around $5,000 to $25,000.

The second is an oil tank locate. This is very important for homes built before 1980, many of which had buried oil tanks. If they are not in use, they need to be properly decommissioned by an environmental contractor.

The third test we recommend is a radon test. Radon is a natural gas that comes up from the crevices of the earth, and we just want to make sure that it's not concentrated where you're living, because houses can act like a vacuum. This test usually runs around $150 to $200.

Once we receive the report and all of those inspections are done, that's when we do our negotiating. We use that report to negotiate any repairs and any credits with the sellers. And that pretty much wraps it up with the standard inspections in Portland and the cost.

Portland home inspection cost breakdown

Inspection	Typical cost	When to get it	Why it matters in Portland
General home inspection	$400–$600	Every Portland home purchase	Whole-house: roof, foundation, electrical, plumbing, HVAC, attic, insulation, drainage, major appliances
Sewer scope	$150–$250	Homes with older sewer laterals — most Portland neighborhoods pre-1970s	Camera runs the lateral; catches clay-pipe root intrusion. Failed line replacement can run $5,000–$25,000
Oil tank locate	Varies by contractor (typically $75–$150)	Homes built before 1980	Many pre-1980 Portland homes had buried heating oil tanks. If found and not in use, needs decommissioning by an environmental contractor
Radon test	$150–$200	Every Portland home purchase (short-term ~48-hour test)	Portland's geology puts many neighborhoods in a moderate-to-elevated radon zone. Homes can concentrate the gas because they act like a vacuum

What does the general home inspection actually cover?

A standard Portland whole-house inspection runs $400 to $600 depending on square footage and age. It's a visual, non-invasive assessment of everything a homeowner would need to keep an eye on: the roof (age, condition, active leaks), foundation (cracks, settlement, moisture), electrical (panel age, wiring type, code violations), plumbing (fixtures, water pressure, visible pipe condition), HVAC (age, function, service history), attic (insulation depth, ventilation, moisture), and drainage around the property.

Major appliances that convey with the sale (dishwasher, range, water heater) are also checked. What the inspector cannot do: open walls, dig up buried infrastructure, or give you a numerical price for repairs — that's what the specialty inspections and separate contractor bids are for.

Why is a sewer scope one of the highest-return inspections in Portland?

Many Portland neighborhoods — especially those developed before the 1970s — have sewer laterals made of clay pipe running from the house to the city main. Clay pipes and mature Portland trees don't mix well: root intrusion is common, and a full sewer line replacement can run $5,000 on the low end to $25,000 or more on the high end if the line runs under a driveway, mature landscaping, or the street.

A sewer scope costs $150 to $250. It sends a camera down the lateral, and the video shows exactly what condition the pipe is in. Given the potential downside, it's one of the highest-return inspections a Portland buyer can order. If problems are found, repair or replacement credit is often negotiable with the seller during the inspection contingency period.

What is an oil tank locate, and why do pre-1980 Portland homes need one?

Many Portland-area homes built before 1980 were heated with oil, and those tanks were often buried in the yard. When the home switched to gas or electric heat, the tank wasn't always removed — it was frequently just disconnected and left in place. Decades later, that buried tank can leak and contaminate the surrounding soil.

An oil tank locate uses ground-penetrating equipment to find out whether a tank is on the property. If one is found and is not in active use, Oregon regulations generally require it to be decommissioned by a licensed environmental contractor — which is far cheaper to handle before you own the home than after. The locate itself is quick and inexpensive; discovering an undocumented tank after closing is neither.

How does radon testing work, and does Portland have a radon problem?

Radon is a naturally occurring gas that seeps up through the ground from the decay of uranium in soil and rock. Portland's geology puts many neighborhoods in a moderate-to-elevated radon zone. Because houses tend to act like a slight vacuum — pulling air (and any radon in the soil) up through the foundation — indoor concentrations can accumulate to levels that matter for long-term health.

A short-term radon test costs $150 to $200 and typically runs about 48 hours. If levels come back elevated, radon mitigation systems (typically a fan and vent system) are well-established and effective, and the cost is generally negotiable with the seller during the inspection contingency window.

What happens after all the inspection reports come back?

Once every report is in, your agent walks through the findings with you and separates them into three buckets: cosmetic and normal-wear items you accept as part of the home, moderate items worth requesting repair or credit for, and significant items that require a real negotiation with the seller.

During the inspection contingency period, we submit a formal request for repairs or credits. Sellers can accept, counter, or (rarely) refuse. If the findings meet the contract's threshold and the negotiation doesn't land in a workable place, the inspection contingency generally lets a buyer walk away without losing earnest money. The right response depends heavily on what the market for the specific home actually is — which is a decision better made with an agent who knows the current buyer pool for that home.

Frequently Asked Questions

How much does a standard home inspection cost in Portland?

A standard whole-house inspection in the Portland area runs about $400 to $600, depending on the home's size and age. That inspection covers the roof, foundation, electrical, plumbing, HVAC, attic, insulation, drainage, and major appliances. Most Portland buyers should also budget for three additional Portland-specific inspections: a sewer scope ($150–$250), a radon test ($150–$200), and an oil tank locate (varies) if the home was built before 1980.

What is a sewer scope, and why does it matter in Portland?

A sewer scope sends a camera through the sewer lateral — the pipe that runs from the house to the city main — to check for cracks, root intrusion, and blockages. It's critical in Portland because many neighborhoods (particularly those developed pre-1970s) have older clay pipes that suffer root intrusion from mature trees. Replacing a failed sewer line can run $5,000 to $25,000, so a $150–$250 scope is one of the highest-return inspections you can order.

Do I need an oil tank locate on a Portland home built before 1980?

Yes, and it's one of the most commonly overlooked inspections. Many Portland-area homes built before 1980 had buried heating oil tanks that were never removed when the property switched to gas or electric heat. If a tank is found and is not in active use, Oregon regulations require it to be properly decommissioned by an environmental contractor. Discovering this after closing can be an expensive surprise; the locate itself is inexpensive and quick.

Is radon testing really necessary for Portland homes?

Yes. Radon is a colorless, odorless natural gas that rises from the earth's crevices, and Portland's geology puts many neighborhoods in a moderate-to-elevated radon zone. Homes can concentrate the gas because they act like a vacuum — pulling air (and radon) up from the soil. The standard short-term test runs about $150 to $200 and takes roughly 48 hours. If levels are elevated, mitigation systems are typically effective and can be negotiated with the seller during the inspection period.

What happens after the inspection report comes back?

Once all the inspections are complete and the reports are in, your agent uses the findings to negotiate repairs or credits with the seller. Portland listing agreements typically build in an inspection contingency period during which you can request repairs, credits, or (if the findings are severe enough) walk away without losing your earnest money. The specific timelines and what's negotiable depend on the contract; your agent walks you through the practical options given the report and the current market dynamic.

Under contract on a Portland home?

Own It Northwest coordinates the full inspection process for our buyers — recommended inspectors, scheduling, report review, and repair-or-credit negotiation with the seller. Reach out before you write the offer and we'll build the inspection plan into your timeline.

Talk to Own It Northwest