A home inspection is the buyer's best chance to find expensive problems before they become yours. For $400 to $600 in the Puget Sound, a licensed inspector spends two to three hours on the home and hands you a report that can save tens of thousands of dollars or justify walking away. The trick is knowing which findings are routine and which are genuine red flags. This guide covers the ones that matter most in Pacific Northwest housing stock.
What an Inspection Covers, and What It Does Not
A standard inspection is visual and non-invasive. The inspector evaluates the roof, structure, exterior, electrical, plumbing, heating, insulation, and visible drainage. They do not open walls, move heavy storage, or guarantee anything they could not see. That is why serious findings often come with a recommendation to bring in a specialist. Older homes and unusual construction almost always warrant follow-up inspections, and the cost of those is small next to the cost of a surprise after closing.
Foundation and Drainage Problems
Structural issues are the most expensive category to fix, so they lead the list.
- Foundation cracks. Hairline cracks are common and usually cosmetic. Horizontal cracks, stair-step cracks in block, or gaps you can slide a coin into can signal movement and deserve a structural engineer's opinion.
- Grading and downspouts. Soil should slope away from the house, and downspouts should carry water well clear of the foundation. In our wet climate, poor drainage is the root cause behind a large share of basement and crawl-space water problems.
- Standing water in the crawl space. Puget Sound homes with crawl spaces should be dry. Pooled water, a failed sump, or a musty smell points to a drainage or vapor-barrier problem that gets worse every winter.
Roof and Moss
A roof replacement runs many thousands of dollars, so its condition carries real weight in your budget.
- Age and remaining life. Ask the roof's age. Asphalt shingles last roughly 20 to 25 years, and a roof near the end of that window is a near-term expense whatever its appearance.
- Moss and organic growth. Our climate grows moss on north-facing and shaded roofs quickly. Light moss is manageable, but heavy growth lifts shingles and holds moisture against the roof deck.
- Flashing and penetrations. Failed flashing around chimneys, skylights, and vents is a leading source of leaks. Interior ceiling stains are a clue to look harder here.
Water Intrusion and Moisture
Water is the defining risk of Pacific Northwest homes, and its damage is often hidden.
- Interior stains and soft spots. Discoloration on ceilings and walls, or soft trim around windows, points to past or active leaks.
- Crawl space and attic. Wet insulation, mildew, or a strong musty odor signals a moisture problem. Persistent moisture leads to mold and, over time, rot in the framing.
- Windows and siding. Fogged double-pane windows have failed seals. Rot at the base of siding or trim is common on homes where gutters have overflowed for years.
Electrical Red Flags
Electrical hazards are safety issues first and cost issues second.
- Outdated panels. Federal Pacific Electric (Stab-Lok) and Zinsco panels have documented failure histories and are frequently flagged for replacement. An electrician should evaluate them.
- Knob-and-tube wiring. Common in homes built before 1950, this original wiring is often unsafe when modified or buried in insulation, and many insurers will not cover it.
- Amateur work. Open splices, over-fused circuits, and obvious do-it-yourself modifications suggest more hidden problems behind the walls.
Plumbing and the Sewer Line
The plumbing you cannot see causes the priciest surprises.
- Problem piping. Polybutylene supply lines, used from the late 1970s to the mid 1990s, are prone to failure. Galvanized steel in older homes corrodes and restricts flow.
- Sewer scope. For a few hundred dollars, a camera inspection of the side sewer is worth it on any older home. In established neighborhoods with mature trees, root intrusion and collapsed clay pipe are common, and a full side-sewer replacement can run well into five figures.
- Water heater. Note the age. A tank near or past 12 years is a planning item, and any signs of corrosion or leaking at the base should be addressed.
Aging Systems and Environmental Concerns
Some findings are less about failure today and more about what is coming.
- Heating. A furnace or heat pump past 15 to 20 years is nearing replacement. Ask for service records.
- Buried oil tanks. Many older Seattle-area homes were heated with oil, and abandoned underground tanks are a real liability. Ask whether any tank was properly decommissioned and documented.
- Radon. Parts of Washington sit in elevated radon zones. A radon test is inexpensive, and mitigation, when needed, is straightforward.
- Older-home materials. Homes built before 1978 may contain lead paint, and mid-century homes may contain asbestos in flooring or insulation. Neither is automatically a deal-breaker, but both call for informed handling.
How to Respond to Red Flags
A tough inspection report is leverage, not necessarily a reason to quit. You generally have four moves:
1.Ask the seller to make repairs before closing.
2.Request a price reduction or a closing-cost credit to cover the work yourself.
3.Bring in a specialist to scope the true cost before you decide.
4.Walk away, using your inspection contingency, if the problems are beyond your budget or risk tolerance.
The worst outcome is waiving inspection to win a competitive offer and inheriting a five-figure problem you never saw. In a market that has cooled from its frenzied peak, buyers have more room to keep that contingency than they did a few years ago.
An inspection is not meant to find a perfect house, because none exists. It is meant to make sure you know exactly what you are buying. At Nations Realty, we help buyers read inspection reports with clear eyes, line up trusted specialists, and negotiate from what the findings actually show. Reach out before your next inspection and we will make sure nothing important gets missed.