Preparing for a home inspection is one of the most underestimated steps in selling a home in Oregon. The inspection period is when more deals fall apart than at any other stage of the transaction. A buyer's inspector spends two to four hours examining every accessible system in your home, and the resulting report can contain dozens of findings that give buyers ammunition to renegotiate, request costly repairs, or walk away entirely.
Oregon sellers who prepare proactively for the inspection process dramatically reduce the likelihood of surprises, renegotiations, and deal collapse. This guide provides a comprehensive checklist organized by home system so you can address potential issues before the buyer's inspector ever arrives.
Why Inspection Preparation Matters
The home inspection typically occurs within 10 to 15 business days after the buyer's offer is accepted. During this window, the buyer hires a licensed home inspector to evaluate the property's condition. In Oregon, home inspectors follow standards of practice established by the Oregon Construction Contractors Board, which governs licensing requirements.
The inspector examines the roof, foundation, electrical systems, plumbing, HVAC, water heater, appliances, windows, doors, insulation, ventilation, and the overall structural integrity of the home. In Oregon, many buyers also order supplemental inspections including a sewer scope, radon test, and pest inspection.
When the report comes back with significant findings, the buyer has several options. They can request repairs, ask for a price reduction or closing credit, accept the property as-is, or terminate the contract during the inspection contingency period. Most buyers choose to negotiate, and the inspection report becomes the basis for that negotiation.
The goal of inspection preparation is not to hide problems — that violates Oregon disclosure requirements and creates legal liability. The goal is to address known issues proactively, ensure all systems are functioning correctly, and present a home that inspects well because it has been well maintained.
Exterior Checklist
Start outside, because the inspector does too.
Roof and Gutters. Walk around the property and look up. Missing or damaged shingles, sagging gutters, moss accumulation, and visible wear are all items inspectors will flag. Oregon's wet climate accelerates roof aging, and moss is particularly common in the Willamette Valley and coastal areas. If your roof has significant moss, consider having it professionally cleaned before listing. Clear gutters and downspouts of debris. Ensure downspouts direct water away from the foundation — inspectors specifically check this as improper drainage is a common source of foundation moisture issues.
Foundation and Grading. Walk the perimeter of your home at ground level. Look for visible cracks in the foundation, areas where soil has settled against the siding, or spots where the grade slopes toward the house rather than away. Oregon's expansive clay soils — common in the Portland metro, Willamette Valley, and parts of southern Oregon — can cause foundation movement over time. Minor surface cracks are typically cosmetic, but any crack wider than a quarter inch should be evaluated before listing.
Siding and Trim. Check for peeling paint, rot, gaps at joints, and any areas where moisture may be penetrating behind the siding. Oregon's prolonged wet season means that siding maintenance is critical. Replace any clearly rotted trim boards and touch up peeling paint. These are inexpensive fixes that prevent inspector findings.
Decks and Porches. Inspect for loose boards, missing fasteners, wobbly railings, and structural integrity. Oregon decks take significant weather abuse. Ensure all railings are secure — inspectors physically push on them to test stability. If your deck has visible structural concerns, address them before listing.
Driveways and Walkways. Significant cracks, heaving, or trip hazards will be noted. While these rarely kill deals, they contribute to the overall impression of maintenance quality.
Plumbing Checklist
Plumbing issues are among the most common inspection findings in Oregon homes.
Faucets and Fixtures. Run every faucet in the house. Check for drips, slow drains, low water pressure, and leaks under sinks. Replace worn washers, clear slow drains, and fix any active leaks. Inspectors run every faucet and flush every toilet — don't assume they'll skip the guest bathroom you rarely use.
Toilets. Check for leaks at the base, ensure proper flushing, and verify that the toilet doesn't run continuously. A rocking toilet suggests a compromised wax ring seal, which is a $20 part and a 30-minute fix.
Water Heater. Confirm the water heater is functioning properly, has no visible corrosion or leaks, and has a properly installed temperature and pressure relief valve with a discharge pipe extending to within six inches of the floor. Note the age — water heaters in Oregon typically last 8 to 12 years. If yours is approaching or exceeding that range, be prepared for the inspector to note its age.
Supply and Drain Lines. Inspect visible plumbing in the basement, crawl space, and utility areas. Look for active leaks, corrosion, or improper connections. In Oregon homes built before 1970, galvanized steel supply lines may be present and are commonly flagged. Homes built before the mid-1980s may have cast iron drain lines that show signs of deterioration.
Sewer Line. In Oregon — particularly in the Portland metro area — buyers frequently order a sewer scope inspection. This involves running a camera through your sewer line from the house to the street. Common findings include root intrusion, bellied sections, offset joints, and deterioration of older clay or Orangeburg pipe. If you haven't had your sewer scoped recently and your home is more than 30 years old, consider ordering a pre-listing scope. Finding and addressing issues on your terms is far preferable to discovering them during the buyer's inspection.
Electrical Checklist
Electrical findings are common, especially in older Oregon homes.
Outlets and Switches. Test every outlet and switch. Replace any that don't work, feel loose, or show signs of scorching. Ensure all bathroom, kitchen, garage, and exterior outlets have GFCI protection — this is a code requirement that inspectors always check.
Panel and Breakers. Confirm the electrical panel cover is secure, all breakers are properly labeled, and no double-tapped breakers exist. Double-tapping — two wires connected to a single breaker terminal — is one of the most common electrical findings in Oregon inspections.
Smoke and Carbon Monoxide Detectors. Oregon law requires working smoke detectors on every level of the home and in every sleeping area, plus carbon monoxide detectors near bedrooms if the home has fuel-burning appliances or an attached garage. Test all detectors and replace batteries. Replace any units older than 10 years. Inspectors check these, and missing or non-functional detectors are flagged.
HVAC Checklist
Furnace and Heat Pump. Turn on your heating system and confirm it operates normally — even if the weather doesn't require it. Listen for unusual sounds, check that all vents produce warm air, and note the system's age. Replace the furnace filter before the inspection. A dirty filter is one of the most common (and most easily preventable) inspection findings.
Air Conditioning. If your home has central air conditioning — less common in western Oregon but standard in central and southern Oregon — test it. Confirm it cools effectively and that the outdoor unit is clean, level, and free of debris.
Ventilation. Check that all bathroom fans vent to the exterior, not into the attic. Run each fan and confirm it operates. Inspect the dryer vent for lint buildup and ensure it terminates outside. Oregon's moisture-heavy climate makes proper ventilation especially important, and inspectors pay close attention.
Interior Checklist
Windows and Doors. Open and close every window and exterior door. Confirm they operate smoothly, lock properly, and seal tightly. Check for broken seals in double-pane windows — the telltale sign is condensation or fogging between the panes. Broken window seals are cosmetic in most cases but will be noted.
Attic. If your attic is accessible, look for signs of moisture, mold, pest activity, or inadequate insulation. Oregon building codes require a minimum R-38 insulation in the attic for newer homes. Older homes with less insulation won't be cited as code violations but the inspector will note the condition.
Crawl Space. Oregon homes with crawl spaces should have a vapor barrier (plastic sheeting) covering the soil. Look for standing water, excessive moisture, pest damage, and proper ventilation. Crawl space moisture is one of the most common findings in Oregon home inspections due to the state's wet climate. If your crawl space is excessively wet, address drainage before listing.
Garage. Confirm the garage door opens and closes properly, auto-reverse sensors function, and the firewall between the garage and living space is intact. Test the service door if one exists, and ensure any outlets are GFCI protected.
Common Oregon-Specific Inspection Findings
Oregon's climate and building history create patterns that experienced inspectors know to look for.
Moss and organic growth on roofs is nearly universal in western Oregon. While not structurally damaging in the short term, heavy moss accumulation traps moisture and accelerates shingle deterioration. Professional moss treatment costs $200 to $500 and eliminates a visual red flag.
Radon is present at elevated levels in certain Oregon regions, particularly in central and southern Oregon. If you're in a known radon area, consider pre-listing testing. Mitigation systems cost $800 to $1,500 and eliminate the issue permanently.
Water intrusion in basements and crawl spaces is the single most common finding in the Portland metro and Willamette Valley. Ensure your grading directs water away from the foundation and that your drainage systems function properly.
Older electrical systems — particularly homes with Federal Pacific or Zinsco panels — trigger significant concern. If your home has one of these panel brands, factor potential replacement into your pricing strategy.
The Pre-Listing Inspection Option
Some Oregon sellers choose to order their own pre-listing inspection before putting the home on the market. This costs $400 to $600 and provides a comprehensive understanding of your home's condition before any buyer is involved.
The advantages are significant. You discover issues on your own timeline and address them without negotiation pressure. You can complete repairs with contractors you choose rather than contractors the buyer specifies. You can price your home accurately, accounting for any conditions you choose not to repair. And you can proactively disclose known conditions, which strengthens your legal position.
The pre-listing inspection report does not need to be shared with buyers, though many sellers choose to make it available as a transparency signal.
After the Buyer's Inspection
When the buyer's inspection report arrives, review it carefully with your brokerage if you're using a service tier that includes transaction support. Distinguish between major issues (structural, safety, systems) and minor items (cosmetic, wear-and-tear). Most negotiations focus on major items.
Respond within the timeline specified in your contract. In Oregon, the inspection response period is typically 5 to 10 business days after the inspection. Missing this deadline can have contractual consequences.
Common responses include agreeing to specific repairs, offering a closing credit in lieu of repairs, reducing the sale price, or declining to make changes. Your response should be strategic — addressing legitimate safety and functional concerns while pushing back on cosmetic or preference-based requests.
A well-prepared home that inspects cleanly moves from inspection to closing with minimal friction. That's the outcome every Oregon seller should aim for, and proactive preparation is how you achieve it.
Ready to list? Start your listing today and access inspection guidance through the seller portal.