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
Accepted by cities, insurers, and lenders

Request your proposal — takes 30 seconds

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?

It's a formal opinion, signed and sealed by a licensed Professional Engineer, that a building department, insurance carrier, lender, or HOA will accept as proof — that work was built correctly, that a structure is sound, or that a property meets a specific code requirement. If someone is holding up your permit, claim, closing, or Certificate of Use until an engineer puts a seal on it, that's exactly what we do: we inspect, we evaluate, and we issue the letter the requesting party will accept.

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

We submit on your behalf and follow up with the requesting party until the letter is accepted.

80+
Letters Completed
50+
Satisfied Customers
100%
Letters Accepted
Florida Licensed & Insured  ·  Professional Engineer PE #85427  ·  General Contractor CGC #1531655

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 letters your insurance carrier will accept.

FEMA & flood compliance

Flood venting and elevation-related certifications for properties in flood zones.

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 (PE #85427), which is what building departments, insurance carriers, and lenders across Miami-Dade, Broward, and Palm Beach require. Before the site visit, we review the exact request — the notice, email, or checklist you received — so the letter addresses precisely what the requesting party asked for.

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 tell you exactly what stands between you and the certification, in writing. Because we also hold a Florida General Contractor license (CGC #1531655), we can scope and perform the corrective work, then issue the letter — one firm, start to finish, instead of an engineer who identifies the problem and leaves you to find a contractor.

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 as-built condition and, where the work meets code, certify it for after-the-fact permitting.

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.

Do you handle the repair work too?

Yes. We hold both a Professional Engineer license and a General Contractor license, so if corrective work is needed before certification, we can scope it, permit it, and perform it under one engagement.

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?

It's rare, because we confirm the requirements before writing. But if the requesting party asks for revisions or additional detail, we handle the follow-up and revise the letter until it's accepted — that's part of the engagement, not a new fee.

Need your sealed letter this week?

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