If you’re buying or selling a Mobile, AL home, the WDO (wood-destroying organism) inspection letter — commonly called a “termite letter” — is one of the few documents required at closing that can derail your timeline. Timed wrong, you re-pay for a second inspection. Found wrong, the deal can blow up. Here’s how to handle it.
What a Termite Letter Is
A WDO letter is a formal inspection report from a WDC-licensed (Wood-Destroying Organism Control) ADAI-licensed pest control company, documenting whether the home shows visible evidence of active or prior infestation, damage, or conducive conditions for termites, powderpost beetles, wood-decay fungi, or carpenter ants.
It’s required at closing for:
- VA loans (always)
- FHA loans (always)
- Most conventional loans (lender-dependent; common in Alabama)
- Many cash purchases where the title company requires it
When to Order It
The validity window is 30 days from the inspection date in most Alabama markets. Mobile-area lenders and title companies expect the letter dated within 30 days of closing.
The practical timing:
- Order 21–25 days before closing. This gives you margin for findings or scheduling slips.
- Don’t order earlier than 30 days. If closing slips past day 30, you pay for a second inspection.
- Don’t order later than 14 days. If something is found (active termites, damage, fungi), you need time for treatment and reinspection BEFORE closing.
A typical Mobile-area WDO inspection is usually issued same-day or next-day, with cost depending on the size of the home and the inspector’s travel distance. Actual pricing is set by the operator performing the inspection. Before signing with any inspector, verify their ADAI WDC license — a letter from an unlicensed or wrong-category operator will not hold up with the lender.
Who Pays
In Mobile-area real estate practice:
- VA/FHA loans: The seller pays. This is required by VA/FHA policy, not negotiable.
- Conventional loans: Typically the seller, but increasingly negotiable. Buyer may pay if competitive.
- Cash purchase: Whoever the title company requires (usually the buyer, but check the contract).
What Can Go Wrong
Three common scenarios on Mobile homes:
Active subterranean termite found — The seller must arrange treatment (cost depends on the extent of the infestation and the treatment method the operator recommends), get a reinspection, and re-issue a clean letter. This adds 1–2 weeks minimum. If your closing date is tight, this can blow it. Homes with confirmed Formosan pressure sometimes move toward a monitored Sentricon bait system instead of a one-time liquid treatment, which can affect the reinspection timeline.
Active drywood termite found in coastal/historic homes — More disruptive. Tent fumigation requires evacuation, and cost depends on the size of the structure and the fumigation company’s scheduling. Add 1 week for scheduling, 3 days for fumigation, plus reinspection — closing typically delays 2–3 weeks.
Prior damage with no active infestation — Often a negotiation point. Buyer may want a repair credit; seller may resist. The letter documents damage but doesn’t require repair. Lender discretion governs.
How to Reduce Risk Pre-Listing
If you’re selling a Mobile home, you can do a “pre-listing” WDO inspection 30+ days before listing to surface issues early. This adds a modest inspection cost but lets you treat any findings on your timeline, not the buyer’s.
If you have a current termite bond, the bond’s annual inspection effectively serves as a clean letter — and most bond companies will issue the WDO letter for closing for a nominal fee or none at all.
How to Reduce Risk as a Buyer
If you’re buying:
- Don’t accept an “old” letter. If the seller offers a letter dated more than 30 days ago, demand a fresh one.
- Verify the inspecting company’s WDC license. A letter from an HPC-only company is technically invalid.
- Ask whether the inspection was visual-only or included probing. Some lenders require probing inspection.
- If anything is found, request a copy of the treatment record + photos. This becomes part of your home’s history.
Coastal Baldwin County Specifics
Coastal Baldwin County homes (Gulf Shores, Orange Beach, Perdido Beach, Dauphin Island) face additional drywood termite risk. WDO letters for beach properties should specifically address attic framing, exterior trim, and exposed framing — these are the drywood concentration zones.
What If You’re Closing on a New Build?
New construction in Mobile-area typically uses pretreatment (Termidor SC or equivalent injected before the slab pour). The builder should provide a “soil pretreatment certificate” — different from a WDO letter but equally important. Some lenders accept the pretreatment certificate in lieu of a WDO letter for new construction.
Get Matched With a Licensed WDO Inspector
Mobile Alabama Exterminators is a 24/7 dispatch service. For Mobile and Baldwin County WDO inspections and letters, enter your ZIP code and we’ll connect you with a licensed, insured, WDC-licensed exterminator in our network who serves Mobile County and Baldwin County, accepted by area lenders. Your quote is between you and the operator.
Mobile Alabama Exterminators is a 24/7 dispatch and matching service. We connect Mobile and Baldwin County callers with licensed, insured Alabama pest control exterminators. We are not a licensed pest control company and do not inspect, treat, or warranty pest control work.