Need an Engineering Certification Letter for Your City, Insurer, or Lender?

PE-SEALED CERTIFICATION LETTERS · PERMITS · INSURANCE · LENDERS
Fixed fee — quoted in 1 business day
Site visit in 3 to 5 days
Signed-and-sealed letter in 24 hours
Prepared to address city, insurer, and lender requirements

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Tell us what the requesting party asked for — fixed-fee proposal within one business day.
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What is an engineering certification letter?

An engineering certification letter is a signed-and-sealed professional opinion addressing a specific existing condition, completed work, or stated requirement. Building departments, insurers, lenders, associations, and other parties may request such a letter as part of their review process. We inspect the applicable conditions, evaluate the available information, and prepare a letter responsive to the documented request.

How it works

01 — Site visit

We schedule the site visit within 3–5 days. A licensed Professional Engineer inspects exactly what the requesting party needs certified.

02 — Signed and sealed letter

Your certification letter is signed, sealed, and delivered as a submission-ready PDF within 24 hours of the site visit.

03 — Submission

When included in the engagement, we submit the letter and respond to reasonable clarification requests related to the original scope.

80+
Letters Completed
50+
Satisfied Customers
100%
PE-Sealed Deliverables
Florida Licensed & Insured · Professional Engineer PE #85427 · PE-Sealed Existing-Condition Evaluations

Letters we issue. One fixed fee.

Every certification letter is a fixed fee — quoted before you commit, with no hourly billing and no surprises.

Permit closeout & expired permits

Certification of completed work to close open or expired permits with your building department.

Unpermitted work legalization

As-built evaluation and certification for after-the-fact permits on work done without one.

Structural certification letters

Beams, trusses, load capacity, wall removal, and post-damage structural assessments.

Insurance & claim support

Structural-condition and cause-of-damage evaluations prepared to address the insurer’s documented request.

FEMA & flood compliance

Engineering evaluations related to flood openings and applicable building requirements. Elevation certificates and land-surveying services are prepared by appropriately licensed surveyors.

Certificate of Use & occupancy

The engineering letters your municipality requires before issuing a Certificate of Use.

"We were closing on a sale and discovered an expired permit from a renovation eight years ago. Mimik inspected the work, issued the sealed letter, and the permit was closed before our closing date — the whole thing took six days. They knew exactly what the City of Miami needed before we did."

— Julian G, property owner, City of Miami

Frequently asked questions

Will my city, insurance company, or lender accept your letter?

Our letters are signed and sealed by a Florida-licensed Professional Engineer. Before the site visit, we review the requesting party’s notice, checklist, or written requirements so the letter addresses the defined request as closely as possible. Final acceptance remains subject to the reviewing party.

How fast can I get the letter?

Site visit within 3–5 days of your request, and the signed-and-sealed letter delivered as a submission-ready PDF within 24 hours of the visit. If your deadline is tighter, tell us — same-week turnaround is our normal pace, and we'll tell you honestly if a date isn't achievable.

What does an engineering certification letter cost?

Every letter is a fixed fee, quoted before you commit — no hourly billing. The fee depends on what's being certified and the size of the property. Send us the request you received and you'll have a fixed-fee proposal within one business day.

What if you find problems during the inspection?

We document the conditions that prevent certification and explain the corrective action or additional evaluation required. When appropriate, we can prepare the necessary engineering documents, coordinate with the owner’s licensed contractor, and reinspect the completed work before issuing the final certification.

Can you certify work done by a previous owner?

Yes. This is one of the most common situations we handle — unpermitted or undocumented work discovered during a sale, refinance, or Certificate of Use inspection. We evaluate the visible and verifiable as-built conditions. Certification may require records, testing, calculations, selective access, or additional investigation, particularly when work is concealed.

What's the difference between a certification letter and a permit?

A permit is the city's authorization for work; a certification letter is a licensed engineer's sealed professional opinion about existing conditions or completed work. Cities often require the letter as part of closing an open permit, legalizing unpermitted work, or issuing a Certificate of Use — the letter supports the permit process, it doesn't replace it.

Can you help with the corrective-work process?

Yes. If corrective work is required, we can define the engineering requirements, prepare or coordinate supporting permit documents, communicate with the owner’s licensed contractor, and inspect the completed work for certification. Construction pricing and contractor selection remain separate from the engineering evaluation.

Do you serve my city?

We serve all of Miami-Dade, Broward, and Palm Beach counties — every municipality. If your request comes from a city building department, we format and submit the letter to that department's specific requirements.

What do you need from me to start?

The property address and a copy of whatever you received — the city notice, the insurance request, the lender's condition sheet, or simply a description of what needs to be certified. That's enough for a fixed-fee proposal within one business day.

What if the requesting party rejects the letter?

If the requesting party asks for reasonable clarification related to the original scope, we respond and revise the letter as appropriate. Requests involving additional investigation, testing, design, or expanded certification may require a supplemental scope.

Need your sealed letter this week?

Most owners get a fixed-fee proposal back within one business day.
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