The short answer: before you buy a San Jose home, get a WDO inspection — a wood-destroying organisms report written by a licensed Branch 3 inspector. It is routine in Bay Area escrow, and it is the one document that tells you where termites, fungus, or rot have already damaged the structure and where the house is set up to get damaged next. The report sorts its findings into Section 1 and Section 2, and understanding that split is how you negotiate a purchase with your eyes open instead of inheriting someone else’s deferred repair.
What is a WDO report, exactly?
A WDO (wood-destroying organisms) report is a licensed structural pest inspector’s record of conditions in a building related to termites, wood-boring beetles, and wood-decay fungus. The inspector works through the accessible areas — foundation, substructure or crawlspace, attic, exterior, and the visible interior — and diagrams what they find. In the Bay Area it is a standard part of escrow, and lenders and agents expect to see one. It is specific to wood-destroying organisms; it is not a general home inspection, and it does not cover the roof, electrical, or plumbing beyond the moisture that feeds decay.
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What is the difference between Section 1 and Section 2?
This is the heart of the report. Section 1 covers active infestation or existing damage — live termites, current fungus, visible decay. These are the “infection present now” items. Section 2 covers conditions likely to lead to infestation or damage if nothing changes — earth-to-wood contact, a leaking hose bib wetting the mudsill, poor crawlspace ventilation, cellulose debris left under the house. These are the “this is how you get a Section 1 next year” items. In most Bay Area deals, Section 1 items are the ones that get negotiated and often cleared before close; Section 2 items are judgment calls you make with your agent. The reason the split matters to a buyer is leverage: a Section 1 finding is objective, documented damage that a seller usually expects to address, while a Section 2 finding is a maintenance item you can fold into your own plans or ask the seller to credit. Read both sections, not just the summary, because the detail is where the real cost lives.
| Section 1 | Section 2 | |
|---|---|---|
| Means | Active infestation or existing damage | Conditions likely to lead to damage |
| Examples | Live termites, fungus, decayed wood | Earth-to-wood contact, leaks, poor ventilation |
| Urgency | Address now | Prevent before it becomes Section 1 |
| In escrow | Often cleared before close | Negotiated or noted |
What do inspectors find in older San Jose homes?
The housing stock tells the story. Willow Glen, Naglee Park, and Rose Garden are full of pre-war bungalows, and pre-1960 homes are exactly where drywood termites settle in — the telltale sign is pellet-like frass sifting out of small kick-out holes in trim and framing. East San Jose’s post-war raised-foundation tract homes give inspectors crawlspace access, which is good for finding problems but also where subterranean termites show up: because our irrigated clay soils keep them active close to year-round, the classic sign is mud tubes climbing the foundation, with swarms after the first heavy fall rains. Slab-built Eichlers in nearby Sunnyvale, Palo Alto, and Cupertino hide their substructure, so inspectors lean on moisture readings and the visible framing they can reach.
- Pre-war bungalows (Willow Glen, Naglee Park, Rose Garden): watch for drywood frass and old repairs.
- Post-war raised-foundation homes (East San Jose): crawlspace mud tubes and substructure moisture.
- Slab Eichlers (Sunnyvale, Palo Alto, Cupertino): limited substructure access, so moisture and framing reads matter.
- Any home: earth-to-wood contact, leaking plumbing, and crawlspace debris are the usual Section 2 drivers.
Does a finding mean the whole house needs tenting?
Not usually. The treatment depends on the organism and how far it has spread. A localized drywood termite pocket in a section of trim or framing can often be handled with a localized treatment rather than tenting the whole house. Tent fumigation is for whole-structure drywood infestations spread through framing you cannot open up — on statewide estimates, fumigation runs roughly $2,200–$5,500, which is a statewide guide figure rather than a quote. Subterranean termites are a different fight entirely, addressed at the soil and foundation rather than by tenting. The report should point toward the right scope, and you are entitled to a clear explanation of why.
How do you read a WDO report past the summary?
The summary page is where most buyers stop, and it is the page that tells you the least. The value is in the diagram and the numbered findings keyed to it: each finding has a location on the sketch, a description, and a recommendation, and that detail is where the real cost lives. Two lines that both read as fungus damage on the summary can mean a small board replacement or a major substructure job once you read the location and scope. Match every finding number to its spot on the diagram so you know whether the problem is the corner of a porch post or the main bearing beam under the house.
Pay attention to the phrase further inspection recommended. It is not filler — it means the inspector saw something they could not fully evaluate, usually because an area was blocked by storage, insulation, or a finished ceiling. On an older San Jose home with a tight crawlspace or a finished basement, those flags matter, because the problem you cannot see is the one that surprises you after close. A report that is honest about what it could not reach is more trustworthy than one that reads suspiciously clean.
Who pays for the repairs, and what is a clearance?
In most Bay Area deals, Section 1 items are negotiated to the seller, who pays to have the work completed and then provides a clearance — often called a Notice of Work Completed or a Section 1 clearance — confirming a licensed company corrected the findings. Buyers frequently make that clearance a loan condition. Section 2 items are the ones you weigh with your agent: fold them into your own maintenance plan, or ask for a credit. There is no fixed rule about who pays; it is leverage, and the report is your evidence.
Costs run the full range. A single earth-to-wood correction or a localized drywood treatment may be a few hundred dollars; a whole-structure tent fumigation runs roughly $2,200–$5,500 on statewide estimates, which is a guide figure rather than a quote. Subterranean termite work is priced differently again, because it is handled at the soil and foundation. Get the scope in writing before anyone signs off on a credit, so the number reflects the actual job rather than a placeholder.
When in escrow should you order the inspection?
Order it early in your inspection contingency, not the day before it expires. A WDO inspection is quick to schedule, but if it turns up a Section 1 finding you want corrected, the seller needs time to get the work done and produce the clearance before you remove contingencies. In a fast San Jose market where contingency windows are short, a day lost at the start can force you to choose between waiving protection and losing the deal. Line the WDO inspection up alongside your general home inspection so both reads land while you still have room to act on them.
Getting your own inspection before you commit
If the seller’s report looks thin, or you want an independent read before you remove contingencies, you are well within your rights to order your own WDO inspection — and on a purchase this size, it is cheap insurance. A licensed Branch 3 inspector will walk the accessible structure, diagram the findings, and sort them into Section 1 and Section 2 so you know what you are buying and what it will take to protect it. It is far cheaper to learn about a crawlspace moisture problem or a drywood pocket before you sign than to discover it the first rainy season after you move in. Thinking about a home in San Jose, Willow Glen, or anywhere in Santa Clara County? Call Budget Pest Control at (209) 563-1650 to schedule an inspection before you sign.