251 W Key Palm Rd
Drag to compare the lot in 2017 with 2026. The pink line is the surveyed parcel boundary.
What it’s worth as land
From recorded salesSized to this lot, nearby waterfront land sales point to about $564 per sq ft. This parcel last sold for $9M in Aug 2025 ($583 per sq ft, the pink dot).
Does it pencil?
Build-and-sell pro formaBoca Raton calibration
Calibrated on 96 Boca Raton deals. With these build costs the calculator's land budget is a median 97% of what the builders actually paid for the lot, and within 25% of it on 39 of the 96 (the old defaults came to 94%).
A quick pro forma, not an appraisal. Every number is editable; the starting points come from city records, and build cost is an assumption to replace with a builder’s bid.
The rules
City GIS and parcel roll- Zoning
- R1A Single-Family Residential
- Flood zone
- AE base flood elevation 7 ft
- Lowest floor
- 8 ft+ BFE + 1 ft minimum under the Florida Building Code; confirm with the city
- Waterfront
- Yes dock, seawall and setback rules apply
- Lot size
- 15,429 sf 0.35 acres
- Ownership
- Private owner
Setbacks, height and lot coverage depend on the zoning district; see Boca Raton’s zoning code (Chapter 28). Confirm with a surveyor and the city before you buy.
Nearby land sales
Waterfront · last 5 years| Address | Sold | Price | Lot | $/sq ft | Away |
|---|---|---|---|---|---|
| 191 W Coconut Palm Rd Bought for a new home · Hanna Homes | Oct 2022 | $8.2M | 15,311 sf | $536 | 161 m |
| 169 W Coconut Palm Rd Bought for a new home · Hanna Homes | Jul 2022 | $8.2M | 15,316 sf | $535 | 204 m |
| 368 S Maya Palm Dr Bought for a new home · SRD Building | Dec 2025 | $9.2M | 14,305 sf | $643 | 324 m |
| 234 W Alexander Palm Rd Bought for a new home · Leonard Albanese & Sons Builders | Jan 2023 | $8.35M | 15,002 sf | $557 | 344 m |
| 336 E Coconut Palm Rd Bought for a new home · SRD Building | Jan 2025 | $10M | 18,835 sf | $531 | 350 m |
| 495 E Alexander Palm Rd Bought for a new home · Primo Construction | Mar 2026 | $8.18M | 14,606 sf | $560 | 464 m |
| 360 E Alexander Palm Rd Bought for a new home · SRD Building | Jul 2022 | $10.5M | 21,087 sf | $498 | 505 m |
| 480 E Alexander Palm Rd Bought for a new home · SRD Building | Apr 2022 | $7.75M | 15,046 sf | $515 | 508 m |