Buying pre-construction in Key Biscayne: what to verify before you reserve

Reserving off-plan in Key Biscayne means committing money against a building that does not yet exist. What you sign at the start decides what you can do three years later.

In a resale purchase you see what you get. In pre-construction you get a written promise, and the gap between what is promised and what is delivered lives entirely in the contract. The clauses on material substitution, delivery extensions and deposit refunds are what decide whether a delay costs you patience or costs you the investment.

Key Biscayne moves through a different channel because the village keeps its own permit counter and because everything that reaches the island crosses a single bridge. For a buyer abroad that is not scenery, it is logistics. The contractor quoting a renovation prices in travel and the delivery window in which material can be unloaded; the appraiser and the inspector your lender sends depend on that same bridge; and scheduled work can stop because of a closure nobody told the buyer about. On top of that, the county does not grant the approval: height, setback, landscaping and dune protection rules are set by the village, and when the parcel touches the shore a state authority enters as well, so a wall, a dock or a pool may require more than one file. Ask your insurance broker how the carrier reads the exposure of that specific parcel and what it requires before issuing; ask your closing attorney whether dune restrictions or easements are recorded on title; ask the village which work is approved at the counter and which goes before a board. It also pays to learn who manages the building or the association, because on a small island the manager is the person who actually answers.

What is specific to Key Biscayne

What to verify, step by step

1. Ask for the developer's legal name, not the marketing one, and search it in the county court records for prior litigation.
2. Read the delivery clause: check whether it sets an outside date and what exactly happens if it is missed.
3. Ask where your money is held and under what arrangement, and request it in writing before you transfer.
4. Compare your unit's plan against the full floor plan: orientation and who your neighbour is cannot be changed later.
5. Confirm what the contract allows on assigning or reselling before delivery, because many developers restrict it.
6. Have the contract reviewed by a Florida-licensed attorney before you sign, not after.

Mistakes that cost money

• Treating the rendering as a contractual description: the rendering does not bind anyone, the finishes schedule does.
• Wiring the deposit before knowing which account it enters and who can draw on it.
• Assuming the brochure date is the contract date. It almost never is.

Frequently asked questions

Can the deposit be recovered if the project is cancelled?

It depends entirely on how the contract is drafted and where the money is held. Ask for both in writing and have them reviewed before you transfer.

Can you sell before delivery?

Some developers allow it, others forbid it or charge for it. It is a specific contract clause, not a market custom.

Where to check it

• Miami-Dade Clerk of the Courts — deeds, liens, encumbrances and litigation on the property
• Florida DBPR — whether a broker, appraiser or contractor holds a current licence
• Miami-Dade Permitting and Inspection Center — open or closed building permits on an address
• Village of Key Biscayne — the rules of the municipality Key Biscayne belongs to

Official bodies. Specific figures are requested there, not copied from a listing.

Updated 2026-11-06