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How waterfront property is actually valued in South Florida
Waterfront is where automated valuations fail hardest and where appraisals are contested most. The reason is the same in both cases: the value is not in the house. It is in three variables that never appear on a property card.
The three variables
What the dockage can hold. A slip is not a checkbox. Length, beam and lift capacity decide whether a buyer's boat — the boat this buyer type owns — can live there. A property that can take a 60-foot vessel and one that maxes out at a centre-console are different markets wearing similar houses.
What the water allows. Depth at low tide, at the dock and along the approach. South Florida canals shoal; a slip that a deep-draft boat cannot reach at low tide is priced accordingly by the buyers who know to check, and mispriced by everyone else.
What stands between the dock and open water. A fixed bridge between a property and the inlet caps the vessel that can ever be kept there — no negotiation, no renovation fixes it. Sailboats and flybridge cruisers shop behind no fixed bridges, and they pay for that privilege. The same house, one bridge later, sells to a different buyer at a different number.
Everything else — seawall condition and ownership, dock permits, riparian lines, exposure, no-wake zones — arrives after those three.
Why comparable selection decides these appraisals
Two properties on the same canal, five lots apart, can differ by the entire value of the dockage: one has 90 feet of protected deep water, the other faces a shoal. An appraiser who selects comparables by distance-from-subject treats them as twins. The defensible method brackets the subject on the water variables first — capacity, depth, clearance — and lets the house adjust around them.
This is also why waterfront disputes are the ones that reach attorneys. The spread between a water-blind valuation and a water-literate one is routinely the largest number in the file.
The record behind this
Across Palm Beach County's sixteen coastal towns we have completed more than 4,500 assignments over 3,657 properties, from Jupiter Inlet Colony to Highland Beach — and we have appraised dozens of properties over $10,000,000, where these variables carry their largest weights. Every one of them is on the map, by location and assignment type.
If a waterfront number is going to be argued about — a purchase, an estate, a dissolution — the file has to already contain the dockage evidence. That is the assignment we build.
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Matt Thoren, State-Certified Residential Appraiser · 561-853-2129 · Residential only.