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What Happens If You Build Without a WPI-8?
It’s a question that usually gets asked too late: a coastal Texas property is built, the punch list is done, the owner is ready to close — and someone realizes there is no WPI-8 certificate. Here’s what actually goes wrong, and what your options are when it does.
Three things break when there’s no WPI-8
1. The property cannot get windstorm insurance through TWIA
The Texas Windstorm Insurance Association — TWIA — is the wind insurance backstop for the coastal catastrophe area. TWIA requires a WPI-8 to issue a policy on a structure built after January 1, 1988 in a designated catastrophe area. No certificate, no policy.
2. Most lenders won’t fund the loan
Lenders require windstorm coverage on coastal properties before closing. If TWIA can’t issue a policy without the WPI-8, and private wind carriers are hard to find on coastal property, the loan can’t fund. The closing falls through or is indefinitely delayed.
3. Resale and refinance get harder
Even years later, when the owner wants to sell or refinance, the missing WPI-8 follows the property. The next buyer’s lender will ask the same questions. The next insurance underwriter will too.
Why this happens more often than it should
The most common reason a project ends up without a WPI-8 is not malice. It’s that nobody on the project team treated the certificate as required infrastructure from day one. The architect drew the building. The contractor built the building. Inspections happened — but city or county inspections, not TDI windstorm inspections, which are a separate and parallel process.
Then closing approaches, the title company asks for the certificate, and the owner finds out for the first time that the inspections needed to happen during construction — when the work was visible — and they no longer are.
Can you get a WPI-8 after construction is finished?
Sometimes. But it’s harder, slower, and more expensive than doing it right during construction. There are a few possible paths:
Post-construction evaluation
A Texas-licensed engineer can perform a post-construction evaluation of the existing structure. This involves visual inspection, partial removal of finishes (drywall, soffits, panels) to expose concealed connections, photographic documentation, and an engineering report on whether the existing construction appears to comply with the applicable wind code.
This is more invasive than during-construction inspection because the work is no longer visible. The engineer cannot certify what they cannot see — so anything concealed has to be exposed enough to be evaluated.
Sample inspection or destructive testing
For larger structures, sample inspections may be acceptable. The engineer opens up representative areas — a few wall cavities, a section of soffit, a section of roof deck — and infers compliance for the rest from the sample. This is judgment-heavy and not always sufficient for TDI’s requirements.
Re-roof or re-cladding the structure
In some cases the simplest path is to redo the parts of the structure that need to be inspected. Re-shingling the roof gives an inspector a chance to see the deck nailing pattern, drip edge, and edge attachments. Re-cladding gives an inspector access to wall sheathing nailing.
None of these post-construction paths are guaranteed. TDI may still find the file insufficient and decline to issue the certificate. The entire purpose of the during-construction inspection process is to avoid this scenario.
What it costs when it goes wrong
A standard during-construction WPI-8 inspection runs about $3,000 for a typical residential structure. A post-construction evaluation on the same property — with exploratory openings, photographic documentation, and a written engineering report — typically runs several times that, depending on how much exposure work is needed and how many of the connections can be verified visually.
Add to that: the cost of patching what was opened up, the cost of project delay while the evaluation is performed, and the cost of carrying the loan and the property during the delay.
How to avoid this entirely
The fix is straightforward: file the WPI-1 application before construction starts, hire a TDI Appointed Qualified Inspector before the foundation is poured, and schedule the three or four inspections at the right milestones. The cost is predictable and the risk is contained.
If you’re reading this because you’re already in the post-construction problem — the structure exists and the certificate doesn’t — the right next step is a conversation with an engineer who has handled post-construction evaluations. Some are recoverable. Some require redoing parts of the structure. The honest answer depends on the specifics of the project.
Don’t end up here. Start with a clean inspection path.
Oasis Engineering files the WPI-1, runs the inspections, and submits the WPI-2E so TDI can issue your certificate. Pay deposit online and lock in your inspector before the foundation goes in.
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