The Miami Condo Buyer's Due Diligence Checklist for 2026: 23 Items That Save You From Buying a Disaster

A 13-month condo glut means you have time to be thorough — here's the exact line-by-line due diligence checklist I run on every condo deal as a Miami real estate agent.

Key Takeaways

• Florida's post-Surfside condo reserve rules mean every Miami condo building has a structural integrity report you must read before closing — skipping it is the single most expensive mistake a buyer makes today.
• A 13-month condo inventory glut means you no longer need to waive contingencies or rush — buyers have leverage to demand full document review and walk if anything is wrong.
• The right due diligence on a Miami condo takes 7-14 days and protects you from six-figure special assessments, declining building values, and unsellable units.
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For two years, from 2021 through 2023, condo buyers in Miami were skipping due diligence to win bids. Waived inspection contingencies, waived financing, sight-unseen offers with two-day inspection periods that nobody actually used.

That market is gone.

In June 2026, with Miami-Dade condo inventory sitting at roughly 13 months of supply, buyers have time. Buyers have leverage. And buyers who skip due diligence are the ones inheriting six-figure special assessments six months after closing.

As the Miami real estate agent who works exclusively with buyers who actually read the documents, here is the line-by-line due diligence checklist I run on every condo deal. Twenty-three items. Skip none of them.

The Building-Level Items (10 critical checks)

1. 1Structural Integrity Reserve Study (SIRS)
2. 2Florida law requires every condo building three stories or taller to have a SIRS completed by December 31, 2024. If the building hasn't produced theirs, that's a red flag the size of the Atlantic Ocean. Read the SIRS. Look at the funded percentage and the timeline of major repairs.

1. 1Milestone Inspection Report
2. 2Buildings 30 years or older (25 years if within 3 miles of the coast) must have a milestone inspection. Read the structural engineer's report. Specifically look for "Phase 2" recommendations — those are the expensive ones.

1. 1Reserves Funded Percentage
2. 2Florida requires reserves to be fully funded by the timeline in the SIRS unless waived. Less than 50% funded means a special assessment is coming. Above 80% funded is the only safe zone.

1. 1The Last 24 Months of Board Meeting Minutes
2. 2This is where the truth lives. Read them. Look for the words "leak," "spalling," "concrete restoration," "assessment," "litigation," "insurance carrier non-renewal." Each is a flag.

1. 1Current and Past Special Assessments
2. 2Get the assessments history for the last 5 years. If the building has assessed three times in five years, that pattern almost always continues.

1. 1The Current Insurance Master Policy
2. 2Look for the carrier name, the limits, the deductible (especially wind deductible, which in Miami is often 3-5% of the unit value), and whether the policy is HO-6 friendly.

1. 1Litigation Status
2. 2A condo association in active litigation against the developer, a contractor, or insurance carrier is a deal-breaker for most lenders. Some buyers don't realize they can't finance until the appraisal comes back.

1. 1Owner-Occupancy Rate
2. 2Below 50% owner-occupied makes financing meaningfully harder and resale meaningfully slower. Above 70% is the comfort zone.

1. 1Rental Restrictions
2. 2Read them carefully. Some buildings allow short-term rentals, some require 6-month minimums, some have 12-month minimums. If you plan to Airbnb, confirm in writing before you close.

1. 1Pet, Move-In, and Use Restrictions
2. 2Less catastrophic, but matters for your daily life. Read the rules and regulations document end-to-end.

For deeper analysis on these items, my piece "How to Read a Miami Condo Building's Financials Before You Buy" walks through how to actually interpret each document.

• Miami Market Snapshot — June 2026:
• Miami-Dade condo inventory: ~13 months of supply (multi-year high)
• Average condo days on market: 95+ days
• Buildings with active special assessments: roughly 1 in 4 Miami-Dade condos
• Average wind insurance deductible on master policy: 3-5% of unit value
• Seller concessions appearing on roughly 40% of closing closings

The Unit-Level Items (7 critical checks)

1. 1Tax Assessment vs Market Value
2. 2Look at the past 3 years of property tax assessments. A unit re-assessing aggressively up can mean a tax shock at closing.

1. 1The Actual Square Footage vs Listed
2. 2Miami listings frequently inflate square footage. Cross-reference the property appraiser site (Miami-Dade Property Appraiser) against the listing. A 3% delta is normal. A 15% delta is a fight.

1. 1Stack and Floor Premium
2. 2Some stacks in a tower are objectively better than others — corner units, certain views, higher floors. Know the premium so you don't overpay for a "view" you don't actually have.

1. 1Balcony Status
2. 2Check whether the balcony is conforming, whether it's been enclosed (legally or not), and whether there's any spalling. Balcony repairs are the most common Miami condo assessment.

1. 1HVAC Age and Replacement Cost
2. 2Miami HVAC units last 8-12 years. A 10-year-old system means budgeting $8K-$14K for replacement within 24 months.

1. 1Window and Door Impact Rating
2. 2Post-Hurricane Andrew codes are strict. Non-impact windows on a 5th-floor unit are usually a deal-breaker for insurance pricing.

1. 1The Stack's Past Sales
2. 2Pull the last 5 sales in your unit's stack on the same line, not just the building average. The line matters more than the building average.

The Transactional Items (6 final checks)

1. 1Lender Approval of the Building
2. 2Not all condo buildings are on Fannie/Freddie/FHA approved lists. Confirm before going under contract — this is the single fastest way to lose your earnest money.

1. 1The Estoppel Letter
2. 2Order it the day you go under contract. It shows exactly what you owe and what the seller owes at closing. Surprise fees here are common in soft markets where sellers are squeezed.

1. 1Title Search and Survey
2. 2Standard but critical in Miami where property lines on bayfront and waterfront properties can be confused.

1. 1Inspection by a Miami-Specific Inspector
2. 2General home inspectors miss Miami-specific things: spalling, salt corrosion on rebar, hurricane impact rating verification, balcony slab condition. Use a Miami-credentialed inspector, not your cousin from Orlando.

1. 1Closing Cost Breakdown
2. 2Florida documentary stamps, Miami-Dade surtax, intangible tax on the mortgage — Miami closing costs are higher than you think. Get the line-by-line.

1. 1Possession Date and Walkthrough Timeline
2. 2Confirm the timing for a final walkthrough — within 48 hours of closing is standard. Sellers who refuse same-week walkthroughs are usually hiding something.

The Compounded Reality

Buyers who do all 23 items pay for them. The inspections, the document review, the attorney time — figure $2,000-$4,000 in upfront due diligence costs on a Miami condo.

Buyers who skip them sometimes pay $80,000 to $200,000 for skipping. I've seen it three times this year already. A buyer waives proper SIRS review, closes, and four months later receives a $94,000 special assessment notice for concrete restoration the board had been quietly discussing for 18 months.

As I covered in my piece "Florida's Condo Reserve Law: What Every Miami Condo Buyer Must Check Before Closing in 2026," the structural integrity rules have created a two-tier condo market. Buildings that are funded, healthy, and current are great buys. Buildings that are deferred, underfunded, and behind on inspections are landmines. The buyer's job is to know which one they're looking at — before signing, not after.

Where Most Buyers Cut Corners (And Pay For It)

• In my experience, the four most-skipped items are:
• Board meeting minutes (#4) — boring, but where every coming problem is foreshadowed
• Reserves percentage (#3) — buyers see a number and don't understand context
• Building lender approval (#18) — buyers assume their lender will figure it out
• Insurance master policy details (#6) — buyers only realize after closing that their HO-6 is impossible to bind affordably

I won't take a condo buyer to contract without all four of those reviewed. Not because I'm difficult — because I have watched too many buyers learn this the expensive way.

For first-time condo buyers, my walk-through "First-Time Home Buyer in Miami: The Step-by-Step Guide Nobody Gave You" sets the foundation. This article is the deeper specialist version.

Frequently Asked Questions

Q: How long does due diligence take on a Miami condo purchase in 2026? A: Plan for 10-14 days for full document review and inspection. The Florida standard contract gives the buyer a defined inspection period — use all of it. With inventory at 13 months supply, you don't need to rush, and sellers can't pressure you to shortcut the process.

Q: What's the most expensive mistake a Miami condo buyer can make? A: Skipping the Structural Integrity Reserve Study and milestone inspection review. Buyers who close in buildings with major deferred concrete restoration regularly inherit special assessments of $50,000 to $250,000 within the first two years of ownership.

Q: Can my Miami condo purchase be financed if the building is in litigation? A: Usually no. Fannie Mae, Freddie Mac, and most portfolio lenders will not finance units in buildings with active litigation against developers, contractors, or insurance carriers unless the litigation is below specific dollar thresholds. Confirm the building is on approved lists before going under contract.

Q: Are condo HOA fees in Miami going up in 2026? A: Yes, broadly. Post-Surfside reserve funding requirements, rising insurance premiums (especially wind coverage), and concrete restoration projects have pushed HOA fees up an average of 15-30% in the last 24 months for buildings older than 25 years. New construction has rising fees too, but generally from a lower base.

¿Listo para hacer tu movimiento? Llámame. Partnership Realty / Partnership Realty Inc / +1 (561) 629-0358 / carloscabalerealtor.com