Vacant lotWaterfront

845 NE Bay Isle Dr

Boca Bay ColonyBoca Raton14,231 sq ft lot (0.33 acres)Zoned R1B
845 NE Bay Isle Dr in 2026845 NE Bay Isle Dr in 20172017 · Palm Beach County · Palm Beach Co.2026 · Palm Beach County · Palm Beach Co.

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 sales
$2.49–2.86MMiddle half of nearby land sales, adjusted for lot size (12 sales), applied to this lot’s 14,231 sq ft.
Land price per sq ft, sized to this lot
$0$161$322

Sized to this lot, nearby waterfront land sales point to about $189 per sq ft. This parcel last sold for $2.85M in Oct 2023 ($200 per sq ft, the pink dot).

Does it pencil?

Build-and-sell pro forma
Supports a land price up to$1.27Mto build and sell a 6,100 sq ft home here at a 15% margin.
Doesn’t pencilAt $2.69M for the land:Loss $539K · −7.6%Needs $1,490/sq ft to hit 15% · assumed $1,158
Land $2.69MBuild $3.54MSoft costs $354KCarry $598KSelling $424KLoss $539KSale $7.06M
Boca 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
R1B 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
14,231 sf 0.33 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
AddressSoldPriceLot$/sq ftAway
7398 NE Bay Cove Ct
Bought for a new home · A & N Housing Group
Oct 2024$3.2M12,672 sf$253153 m
748 NE Bay Isle Dr
Bought for a new home · Core 4 Homes
Jan 2025$2.85M9,840 sf$290246 m
745 NE Bay Isle Dr
Bought for a new home · AK Building & Design
Nov 2025$2.73M14,479 sf$188249 m
830 NE Bay Cove St
Bought for a new home · Defined Construction
Aug 2023$2.05M8,398 sf$244267 m
808 NE Bay Cove St
Vacant lot sale
Oct 2026$1.8M8,925 sf$202293 m
700 NE Orchid Bay Dr
Bought for a new home · Gulfstream Custom Builders
Feb 2023$2.37M19,262 sf$123337 m
7091 NE 8th Dr
Bought for a new home · Beach to Bay Custom Builders
Dec 2021$2.15M9,448 sf$228446 m
748 NE 72nd St
Bought for a new home · Mahn Construction
Dec 2021$1.57M8,250 sf$190465 m