How do you check the flood zone of a Miami condo before you buy?

Three documents, in this order. The federal flood map, which places the parcel in a lettered zone that says whether the lender will require flood insurance and how the premium is set; a Miami buyer reads it by address, and many sites on the bay, the river and the ocean sit in a zone that begins with A or V rather than X. The elevation certificate, which the developer's surveyor prepares and which states the base flood elevation for the parcel and how high the building's lowest floor sits above it; a new Miami tower is built with its homes well above that line and its garage and lobby at or near it, which is why the risk in a new building is on the ground floor and in the budget rather than in the living room. And the county's evacuation zone, which is a different map drawn for storm surge, not for insurance, and decides when the association may tell owners to leave. The buyer asks the sales team for the elevation certificate and reads the other two online.

The map is federal, published by the national flood program, and read by address at the program's own map service. The letters are the finding. A zone beginning with X is outside the mapped high-risk area and flood cover is optional, though available. A zone beginning with A is a high-risk area where water is expected to rise to the base flood elevation in the mapped event, and a lender on a home in it requires flood cover. A zone beginning with V is a high-risk coastal area where waves are expected as well as rising water, built to a stricter standard. Much of Miami's waterfront is mapped A or V, which is a fact about the ground and not about the building; what the building does about it is the next document. The map is revised, so the buyer reads the current panel and asks whether a revision is pending for the parcel. Read climate, insurance and the Miami buyer, flood zone and evacuation at Six Fisher Island and flood zone and evacuation at Olara.

The certificate is a surveyor's form that records the base flood elevation for the parcel and the elevations of the building's floors against it, and it is the document the insurer rates from. A new Miami tower is designed to the Florida building code's flood rules and to the county's own, which put the lowest habitable floor above the base flood elevation with freeboard on top, so the residences on the twentieth floor are not where the water goes. The garage, the lobby, the mechanical rooms and the pool deck are where it goes, and they are common elements, which means the flood exposure of a new tower lands in the association's flood policy and its reserves rather than in the owner's living room. The buyer reads the certificate for the garage level, asks where the generators, the switchgear and the elevator machinery sit, and reads the hurricane page for who decides when the garage is cleared. Read what happens to a new Miami condo in a hurricane and who decides, flood zone and evacuation at Waldorf Astoria and flood zone and evacuation at Alba.

No, and the two are confused daily. The flood zone is a federal insurance map of where water rises in a mapped rain or tide event. The evacuation zone is a county map, lettered A to E in Miami-Dade, drawn for storm surge from a hurricane, and it decides which neighbourhoods are told to leave first when a storm is named. A building can sit in a low-risk flood zone and a high-priority evacuation zone, or the reverse. For the owner the evacuation zone is a fact about daily life in September: the association's emergency powers under the statute let the board close the amenities and order the building emptied when the county calls the zone, and in a hotel tower the operator is clearing guests at the same time. The buyer reads both maps by address and asks the sales team which zone the building expects to be called in. Read closing a Miami condo during hurricane season, flood zone and evacuation at Delano and flood zone and evacuation at Kempinski.

It sets who must carry flood cover and roughly what it costs. In a high-risk zone the association carries a flood policy on the building and the lender on a financed home requires the owner to carry one on the unit; in a low-risk zone both are optional and often bought anyway on a waterfront site. The association's flood cover is a budget line the buyer reads in the estimated budget beside the windstorm premium, and the owner's is a quote the agent produces from the elevation certificate before closing, because a lender will not fund without it and a cash buyer wants to know the number before the deposit is at risk. Neither policy is the windstorm policy: wind and rain from above are the property policies with their named storm deductible; rising water is flood. Read Miami condo insurance, what a named storm deductible is and who pays it, when do you need insurance in place to close on a new Miami condo and who files the claim after a storm damages your Miami condo.

The sales team for the elevation certificate, the garage level's elevation and the location of the building's mechanical plant; the insurance agent for a flood quote from the certificate and a windstorm quote from the address, before the rescission period runs; counsel for the title, since a waterfront parcel may carry a submerged land lease or a seawall obligation the map does not show; and the county, through its two maps, for the zone letters. A buyer who does this on a Tuesday afternoon has read more than the brochure says and less than the building knows, and the gap is what the desk reads with them. Read how to check what can be built next to a new Miami condo, what to ask before you wire and questions to ask a sales team. The desk reads the certificate, the budget's flood line and the evacuation zone with the buyer before the contract.