What Is an Engineer Certification Letter?

An engineer certification letter is an official document prepared by a licensed professional engineer (PE) that verifies the structural condition, code compliance, or safety of a specific element of your property. These letters are often required by building departments, insurance companies, lenders, or during real estate transactions.

At Oasis Engineering, we specialize in providing engineer letters to help homeowners, builders, and developers resolve permit issues, document repairs, or meet state and local code requirements.

Common Engineer Letters We Provide:

✅ Engineer Letter for Permit Closure

If you’ve completed work without final inspections or your permit remains open, most jurisdictions require an engineer letter to close the permit. We inspect the work and, if compliant, issue a letter stating it meets applicable codes.

✅ Engineer Affidavit for Unpermitted Work

Unpermitted work can delay property sales, refinancing, or trigger code enforcement. Our licensed engineers can inspect the work, assess code compliance, and provide an affidavit to help legalize the situation and support retroactive permits.

✅ Structural Engineer Letter for Code Compliance

We routinely issue structural letters confirming that repairs, additions, or modifications meet applicable building codes—whether for walls, framing, foundations, or general structural safety.

✅ Foundation Certification Letters

For manufactured or mobile homes, FHA loans, HUD programs, or county requirements often mandate a foundation certification. We provide engineer letters confirming the foundation meets permanent or regulatory requirements nationwide.

✅ Truss, Roof, or Structural Repair Letters

Roof certifications and truss repair engineer letters are common after storm damage, leaks, or alterations. We inspect and certify repairs or existing conditions for insurance, real estate, or compliance purposes.

✅ Engineer Letters for Roofing In-Progress Inspections

This letters can officially verify that the roofing work meets all required standards, serving as an acceptable substitute for the missing permit in-progress inspections from the City or County.

When Do You Need an Engineer Letter?

☑ Permit closure for completed but uninspected work
☑ Buying or selling a property with unpermitted improvements
☑ Structural changes, repairs, or safety concerns
☑ Manufactured/mobile home foundation certifications (HUD/FHA compliance)
☑ Insurance claims after storm or accident damage
☑ Meeting city or county code requirements

If you’re unsure, we’re happy to review your situation.

Can You Provide Engineer Letters Remotely?

Yes—we offer remote or virtual engineer letters when allowed by code and based on documentation, photos, or site videos. For certain projects, especially when ample documentation, data, plans or reports are available, remote service saves time and money.

For more complex or structural issues, an on-site inspection by our engineering team may be required. We’ll guide you through the best option.

State-Specific Support:

Florida Engineer Letter Requirements

We are highly experienced with Florida’s permitting, storm damage assessments, and engineer affidavit needs. Whether you’re in Pasco, Tampa, or statewide, we understand Florida Building Code (FBC) and High-Velocity Hurricane Zone (HVHZ) requirements.

Texas, Arizona, and Nationwide Engineer Letters

Oasis Engineering supports Texas projects with foundation certifications, unpermitted work affidavits, and structural inspections. We are also licensed in multiple states, providing engineer certification letters for projects across the country.

How Long Does It Take?

Typical turnaround times vary by project type and location:

✔ Virtual/remote letters: 2-5 business days
✔ On-site inspections and letters: 5-10 business days
✔ Expedited options may be available—ask us!

Why Choose Oasis Engineering?

• Licensed, experienced engineers familiar with real-world permit and code issues
• Responsive, approachable service—we help you navigate the process
• Remote options available to save time and reduce costs
• Clear, professional reports trusted by inspectors, lenders, and officials

Need Help with Permits, Inspections, or Unpermitted Work?

Whether you need a foundation certification, unpermitted work affidavit, storm damage assessment, or general structural engineer letter—we’re here to help.

Contact Oasis Engineering today to resolve your permit, compliance, or property certification needs.