A WDIIR (Wood-Destroying Insect Inspection Report) documents visible evidence of termite or other wood-destroying insect activity at the time of inspection, and it’s the document lenders use to evaluate termite risk before funding a mortgage. Arizona has no state law requiring one for every sale, but the Arizona Department of Agriculture’s Pest Management Division (PMD) sets the rules for who can prepare it and how, and FHA and VA lenders commonly require one as a condition of closing. If you’re buying, selling, or representing a property in the East Valley, here’s what to do right now:
- Order early. Schedule the WDIIR at the start of your due diligence window, not the end.
- Confirm a licensed inspector. Only applicators certified in wood-destroying organism management working for a state-licensed pest control business may legally complete a WDIIR in Arizona.
- Expect visual-only limits. The report covers what the inspector can see on the day of the visit. Inaccessible areas must be noted, not guessed. Arsenal Pest Control handles WDIIR inspections in Queen Creek and the East Valley if you need a local, licensed option.
Table of Contents
- What is a WDIIR and why do lenders require one?
- How Arizona’s two-page WDIIR form works
- Who can legally prepare a WDIIR in Arizona?
- What a WDIIR does not cover
- What conditions on your property raise red flags on a WDIIR?
- Where to find the official WDIIR form and state guidance
- How lenders use WDIIRs and what the 30-day rule means for your closing
- How to prepare your property for a WDIIR inspection
- How to hire a licensed WDIIR inspector in Arizona
- Key Takeaways
- Arsenal Pest Control covers WDIIR inspections across Queen Creek and the East Valley
- Useful sources and official links
What is a WDIIR and why do lenders require one?
A WDIIR is a written report completed by a licensed pest control applicator that records visible evidence of wood-destroying insects, past treatments, conducive conditions, and any areas the inspector could not access. It is not a home inspection and not a structural report. Its job is narrow: document what was visible on a specific date.
Lenders care about it because termite damage can compromise the structural integrity of the collateral backing the loan. FHA and VA lenders frequently require an acceptable WDIIR before funding, and most conventional lenders follow similar practices depending on the property’s location and condition. Arizona’s desert climate doesn’t eliminate termite risk. Subterranean and drywood termites are active across the Phoenix metro and East Valley year-round.
The report typically records:
- Active or past evidence of wood-destroying insect activity
- Previous treatment history and any existing warranties
- Conducive conditions (moisture, wood-to-soil contact, debris)
- Areas the inspector could not access, with reasons noted
- Recommendations for correction or further evaluation
Who pays is negotiable. In Arizona, the buyer often orders and pays for the inspection, but purchase contracts can assign the cost to the seller. Get that agreement in writing before the inspection is scheduled.
How Arizona’s two-page WDIIR form works
The official Arizona WDIIR is a two-page document with a specific structure. Knowing what goes where helps buyers and agents read the report accurately instead of just scanning for a “clear” checkbox.
Page 1 covers property identification, the inspector’s license number and company, and a series of yes/no questions: Is there visible evidence of active infestation? Evidence of previous treatment? Are there inaccessible areas? The inspector also signs a statement acknowledging the report’s limitations, specifically that findings reflect visible conditions only on the date of inspection.
Page 2 is where the detail lives. Inspectors record the specific locations of any findings, sketch a diagram of the structure, list inaccessible areas and explain why access was not possible, and note previous treatment details. Photos and addendums attach here.
| Form field | What it means for you |
|---|---|
| Active infestation (Yes/No) | Lender will likely require treatment before funding |
| Previous treatment noted | Ask for warranty documentation; confirm coverage scope |
| Inaccessible areas listed | Those areas are not cleared; follow-up may be needed |
| Inspector’s diagram (page 2) | Shows exactly where findings or exclusions are located |
| Addendum/photos attached | Stronger evidentiary record if a dispute arises post-closing |
If page 2 has a long list of inaccessible areas and no photos, that’s a problem worth addressing before closing.
Who can legally prepare a WDIIR in Arizona?
Not every pest control company can hand you a valid WDIIR. Arizona law is specific: only applicators certified in wood-destroying organism management working for a state-licensed pest control business may complete one. Beyond the certification, the applicator must complete at least five hours of in-house education on WDIIR requirements, per A.R.S. § 3-3633.
The business itself carries filing obligations. Under A.R.S. § 3-3633, the licensee must have the completed WDIIR on file within seven calendar days of the inspection and retain copies for three years. The report serves as legal evidence of conditions on the date of inspection, so accuracy matters beyond just satisfying a lender.
The PMD maintains a searchable database of filed WDIIRs and reportable post-construction termite treatments. Buyers can use it to verify that a report was actually filed and to check prior treatment history on a property.
- Verify the inspector’s license number before the appointment.
- Confirm the business holds an active pest control license in Arizona.
- Ask whether the applicator holds wood-destroying organism management certification specifically.
- Request PMD filing confirmation after the inspection is complete.
Pro Tip: Ask the inspector for their license number and applicator certification category before they arrive. Cross-check both against the PMD database at opm.azda.gov. A legitimate inspector will give you this information without hesitation.
What a WDIIR does not cover
This is where buyers get into trouble. A WDIIR documents only visible conditions on the date of inspection and should not be read as a guarantee against future infestations or a structural damage assessment. The inspector is not certifying that the home is termite-free. They are certifying what they could see that day.
Arizona Administrative Code § R3-8-307 permits inspectors to exclude permanently covered areas and areas with less than 24 inches of clearance under floor joists, but those exclusions must be explicitly noted on the report with reasons. “Inaccessible” is not a blank check. If an area is excluded, it is not cleared.
Common exclusions that show up on Arizona WDIIRs:
- Crawlspaces with less than 24 inches of vertical clearance
- Areas behind built-in cabinetry or finished walls
- Attic sections blocked by HVAC equipment or insulation
- Spaces under heavy appliances not moved for the inspection
- Permanently covered concrete slabs over soil
If a significant portion of the structure falls into excluded areas, a supplemental inspection or structural evaluation may be warranted before closing. A lender may require it anyway.
Pro Tip: If the inspector notes inaccessible areas, request photographic addendums for each one. The PMD guidance PDF explicitly recommends photos as evidence in case a dispute arises after closing. No photos means no record of what the inspector actually saw at those locations.
What conditions on your property raise red flags on a WDIIR?
Inspectors aren’t just looking for live termites. They document conducive conditions, physical situations that make infestation more likely. Lenders treat these as risk factors, and sellers are often asked to correct them before closing.
The most common conducive conditions on Arizona WDIIRs:
- Earth-to-wood contact at the foundation, siding, or framing
- Irrigation overspray hitting the foundation or siding repeatedly
- Planters or soil built up against exterior walls
- Wood debris (lumber scraps, firewood, stumps) stored near the structure
- Faulty grade that directs water toward the foundation
- Moisture damage or mold in crawlspaces or wall cavities
- Cracked slabs or foundation gaps that give subterranean termites direct access
- Trellises or fencing with direct wood-to-soil contact against the house
Most of these are correctable. Regrading, moving planters, adjusting irrigation heads, and removing debris are low-cost fixes a seller can complete before the inspection. Foundation cracks and moisture damage take more time and money, which is exactly why scheduling the WDIIR early in the contingency window matters. When choosing exterior materials for a new build or renovation, material selection affects long-term termite exposure significantly.
Pro Tip: Before ordering the WDIIR, walk the exterior perimeter yourself. Look for soil contact with wood framing, sprinkler heads aimed at the foundation, and any stored wood within a few feet of the house. Correcting these before the inspector arrives avoids a report that flags easily fixable issues as open items.
Where to find the official WDIIR form and state guidance
The Arizona Department of Agriculture’s PMD is the authoritative source for everything WDIIR-related. The official form and the PMD’s WDIIR suggestions guidance PDF are both available through the state’s pest management portal at opm.azda.gov.
The PMD database lets consumers search for filed WDIIRs and reportable post-construction termite treatments by property address. This is useful for buyers who want to verify that a prior inspection was actually filed, or to check whether a property has a treatment history the seller hasn’t disclosed.
For VA loans, the federal form may be preferred over the Arizona state form. Verify with your specific lender which form they require before the inspection is ordered, because using the wrong form means rework.
Documents to keep in your closing file:
- Signed, completed WDIIR (both pages)
- All photographic addendums
- PMD filing confirmation
- Treatment warranty documentation, if applicable
- Any supplemental inspection reports
How lenders use WDIIRs and what the 30-day rule means for your closing
Most lenders, especially FHA and VA, require an acceptable WDIIR before funding. “Acceptable” typically means no active infestation, or evidence that any infestation has been treated and documented. If the report shows active activity, the lender will usually require treatment and a follow-up inspection before the loan closes.
The timing rule that catches buyers and agents off guard: supplemental inspections tied to an original WDIIR are valid for only 30 days. If a closing slips past that window, the supplemental becomes a new inspection, which means new fees and potentially new findings. Schedule the original inspection early, and if the closing date shifts, flag the WDIIR expiration immediately.
For new construction, pre-construction termite treatments are common practice in Arizona but are not required by state law. What is required: businesses that treat new construction must provide a statutory 3-year retreat warranty from the date of original treatment. Read the warranty language carefully. Most cover re-treatment only, not repair of structural damage.
Recommended scheduling timeline:
- Order the WDIIR at the start of the due diligence period
- Allow 3–5 business days for the inspection and report delivery
- If findings require treatment, schedule immediately and plan for a follow-up inspection
- Track the 30-day supplemental window against your closing date
- If closing slips, confirm whether a new inspection is needed before the lender’s deadline
How to prepare your property for a WDIIR inspection
Preparation reduces the chance of exclusions and avoids a second trip. These steps apply whether you’re the seller getting ready or the buyer coordinating access.
- Clear crawlspace and attic access panels. Unlock them, remove stored items blocking the opening, and confirm there’s adequate lighting if possible.
- Move appliances and furniture away from exterior walls where reasonable. Inspectors can note areas behind immovable items as inaccessible.
- Trim vegetation so it’s not touching the exterior walls or roof line.
- Remove wood debris from around the foundation: lumber scraps, firewood stacks, old railroad ties.
- Adjust irrigation heads that spray directly onto the foundation or siding.
- Check for soil or mulch built up against wood siding or framing and pull it back.
- Confirm the inspector has access to all structures on the property, including detached garages, sheds, and fences if they’re part of the inspection scope.
Inspectors use visual examination and non-destructive probing (tapping wood surfaces to detect hollow areas) to assess conditions. They cannot open walls or remove finishes. For a detailed walkthrough of what to expect, Arsenal Pest Control’s pre-inspection preparation guide covers the full checklist.
Pro Tip: Schedule the WDIIR in the first week of your contingency period, not the last. That gives you time to negotiate repairs, order treatment if needed, and still complete a supplemental inspection within the 30-day validity window before closing.
How to hire a licensed WDIIR inspector in Arizona
Questions to ask before you book:
- What is your applicator license number and certification category?
- Are you certified specifically in wood-destroying organism management?
- Does your company hold an active Arizona pest control business license?
- How do you handle inaccessible areas, and will you photograph them?
- What is your process for PMD filing after the inspection?
- Can you provide a sample WDIIR so I know what the report will look like?
Red flags to watch for: an inspector who can’t give you a license number on the spot, vague answers about what gets noted as inaccessible, no mention of photos or addendums, or any suggestion that the report comes with a guarantee of termite-free status. That last one is a legal impossibility under Arizona rules.
A thorough report has a clear diagram on page 2 with specific location callouts, photos attached for any inaccessible or notable areas, and explicit notes on every exclusion with the reason stated. Turnaround is typically 24–48 hours after the inspection. For the closing file, collect the signed WDIIR, PMD filing confirmation, and any treatment warranty before the closing date.
Key Takeaways
A valid Arizona WDIIR requires a licensed applicator, covers only visible conditions on the inspection date, and must be ordered early enough to allow for treatment, supplemental inspections, and lender review within the 30-day validity window.
| Point | Details |
|---|---|
| Order early in due diligence | Schedule at the start of your contingency period to allow time for treatment and follow-up. |
| Verify inspector licensing | Confirm the applicator holds wood-destroying organism management certification via the PMD database. |
| Visual-only scope | The WDIIR documents what was visible that day; inaccessible areas must be noted, not cleared. |
| 30-day supplemental window | Supplemental inspections are valid for 30 days; a closing delay past that date requires a new inspection. |
| Arsenal Pest Control | Handles WDIIR inspections, PMD filing, and supplemental reports in Queen Creek and the East Valley. |
What Arsenal Pest Control sees in the field
Most WDIIR disputes we encounter in Queen Creek and the East Valley come down to one of two things: an inspection that was ordered too late to allow for corrections, or a report with a long list of inaccessible areas and no photos to back them up. Both are avoidable. The 30-day supplemental window sounds generous until a closing slips two weeks and suddenly the original report is stale. Scheduling early and building in buffer time for treatment or regrading isn’t overcaution. It’s how transactions close without last-minute renegotiations. On the photo question: the PMD guidance recommends addendums for a reason. A photo of a blocked crawlspace access or a moisture-damaged beam is worth more than a written note if a buyer comes back six months later with a complaint. Accurate, well-documented reports protect everyone at the table.
Arsenal Pest Control covers WDIIR inspections across Queen Creek and the East Valley
If your transaction requires a WDIIR and you need a licensed, local inspector who files with the PMD and delivers a complete report with photos, Arsenal Pest Control is the straightforward option for Queen Creek, San Tan Valley, Gilbert, Chandler, Mesa, Apache Junction, and surrounding communities. No long-term contracts, no vague answers about what gets documented. The inspection covers the full property, inaccessible areas get noted and photographed, and the PMD filing happens within the required window.
Arsenal Pest Control also handles treatment and supplemental inspections when findings require follow-up, so you’re not coordinating between two companies under deadline pressure. Schedule your termite inspection in Queen Creek to get on the calendar, or visit the full services page to review treatment options if the WDIIR comes back with active findings.
Useful sources and official links
- Arizona Department of Agriculture PMD WDIIR page: official explanation of WDIIR requirements, who may prepare them, and lender context
- PMD WDIIR Suggestions guidance PDF: the state’s practical guidance for inspectors, including the photo addendum recommendation
- Ariz. Admin. Code § R3-8-307 (Cornell LII): inspection coverage rules, permitted exclusions, and inaccessible-area requirements
- Arizona Department of Agriculture Realtor termite guidance: new construction treatment practices and the 3-year retreat warranty requirement
- LegalClarity: Arizona termite inspection requirements: practical buyer-focused interpretation of timing rules, the 30-day supplemental window, and VA form considerations
This article provides general information about Arizona WDIIR requirements and is not legal or professional advice. Confirm current rules with the Arizona Department of Agriculture Pest Management Division or a qualified professional before relying on any specific requirement for your transaction.
Recommended
- Wood Destroying Insect Inspection: What Buyers Need to Know – Arsenal Pest Control
- How to Prepare Your Home for a Pest Inspection – Arsenal Pest Control
- Arizona Ant Infestation Identification Guide for Homeowners – Arsenal Pest Control
- How to Read a Pest Control Treatment Report in Arizona – Arsenal Pest Control
