Licensed PE · 37-state coverage · Continental US & US Virgin Islands
Engineer letters,
delivered with precision.
Sealed documents that close permits, clear inspections, and turn manufactured homes into real property — issued in 24–48 hours by licensed professional engineers across 37 states.
- 24–48h
- Typical turnaround
- 37 States
- Licensed PE coverage
- PE-sealed
- Every document
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States served
37 + USVI
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Licensed PE
On every seal
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Turnaround
24–48 hrs
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Parent firm
Oasis Engineering
Coverage
Every category of engineer letter — one firm.
From foundation pours to post-storm damage, from manufactured home permanents to wind-load calcs under ASCE 7-22. One sealed signature, the same day you need it.
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Foundation
Site-built, manufactured home, repair certification
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Roofing
Reroof affidavits, dry-in, storm damage
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Manufactured homes
HUD 7584 / 4930.3 permanent foundation letters
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Permits & affidavits
Closure, missed inspections, in-lieu-of affidavits
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Wind & flood
ASCE 7-22, ASCE 24 flood-resistant construction
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Inspections
Rough-in electrical, mechanical, plumbing
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Services
Letters for every compliance need.
Every engagement is reviewed and sealed by a licensed professional engineer. Sealed documents are delivered digitally with printed copies on request.
- Most requested
Foundation certifications
HUD, IRC 2018/2021, and state-specific letters for site-built and manufactured homes.
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Permit closure affidavits
Resolve open or expired permits in St. Petersburg, Tampa, and surrounding jurisdictions.
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Missed inspection letters
Engineer letters that stand in for rough-in electrical, plumbing, and mechanical inspections.
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Manufactured home letters
Turn a mobile home into real property — FHA, VA, and conventional loan ready.
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Structural repair specs
Fire-damaged trusses, retaining wall evaluations, foundation repair certifications.
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Code compliance reviews
Dallas IRC amendments, Florida Building Code, NC Building Code 2018 — we know the edges.
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Full catalog
Learn more about all types of letters we offer.
Inspections, flood-zone evaluations, well-capacity certifications, wind calculations, energy calcs, historical building reviews — see the full list of what a licensed PE can seal for you.
How it works
Three steps. No guesswork.
We've compressed what used to take weeks into a tightly-orchestrated 24–48 hour process, without cutting corners on code compliance.
- 01
Submit your project
Upload photos, plans, and permit details through our secure intake. We review within hours.
- 02
Virtual or on-site review
Schedule a video call with a licensed PE. On-site visits are available when required by the AHJ.
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Receive your sealed letter
Digitally signed PDF delivered to your inbox — with printed copies shipped if requested.
Watch · 2 min
What is an engineer letter?
A short explainer on how a PE-sealed letter closes open permits, satisfies missed inspections, and documents compliance after the fact.
What is an engineer letter? — Oasis Engineering
Past letters
762 letters. 246 cities. 32 states.
Every dot represents a PE-sealed letter we've delivered. Click a marker to read what the letter covered and explore similar work in that city.
Articles
Engineering, plainly explained.
Field-tested insight on foundations, permits, and code compliance — written by practicing PEs.
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permits
Engineer Letter to Close Out a Storm or Flood Repair Permit
A PE-sealed engineer letter or affidavit closes open storm-repair and flood-repair permits after hurricanes, flooding, and wind events — even when inspections were missed.
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code compliance
Engineer Letter vs. Sealed Drawings — Which Does Your Permit Need?
The practical difference between a PE-sealed engineer letter and sealed drawings — what each one does, when each is accepted, and which your permit actually needs.
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inspections
Electrical Service Upgrade Engineer Letter — 200A Panel and Meter Main
A PE-sealed engineer letter certifies an electrical service upgrade — load calculations, grounding, bonding, and NEC compliance — to close an open electrical permit.
Ready to start?
Get a sealed letter in 24–48 hours.
Tell us about your project. Our team at Oasis Engineering will confirm scope, fee, and turnaround within hours.