Vacant lotWaterfront

378 S Ocean Blvd

Boca Raton5,027 sq ft lot (0.12 acres)Zoned R5
378 S Ocean Blvd in 2026378 S Ocean Blvd 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
$2.28–3.47MMiddle half of nearby land sales, adjusted for lot size (12 sales), applied to this lot’s 5,027 sq ft.
Land price per sq ft, sized to this lot
$0$552$1104

Sized to this lot, nearby waterfront land sales point to about $601 per sq ft. This parcel last sold for $4.7M in Nov 1989.

Does it pencil?

Build-and-sell pro forma
Supports a land price up to$1.27Mto build and sell a 2,500 sq ft home here at a 15% margin.
Doesn’t pencilAt $3.02M for the land:Loss $1.38M · −34.7%Needs $2,587/sq ft to hit 15% · assumed $1,588
Land $3.02MBuild $1.45MSoft costs $145KCarry $492KSelling $238KLoss $1.38MSale $3.97M
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
R5 Multifamily Residential
Flood zone
AE base flood elevation 8 ft
Lowest floor
9 ft+ BFE + 1 ft minimum under the Florida Building Code; confirm with the city
Waterfront
Yes dock, seawall and setback rules apply
Lot size
5,027 sf 0.12 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
175 NE Spanish Trl
Bought for a new home · Firstwater Building & Design
Feb 2025$7.7M16,466 sf$468754 m
250 NE 5th Ave
Bought for a new home · Mark Timothy
Nov 2021$22M70,354 sf$313900 m
372 NE 5th Ave
Vacant lot sale
Apr 2022$29.8M68,908 sf$432971 m
989 Marble Way
Bought for a new home · National Custom Homes IV
Jan 2022$2.6M13,129 sf$1981.4 km
1520 Royal Palm Way
Bought for a new home · SRD Building
May 2023$10.5M14,976 sf$7011.4 km
840 Coquina Way
Bought for a new home · Blackfin Contractors L L C
Apr 2023$4.2M11,570 sf$3631.5 km
511 Silver Ln
Bought for a new home · M I Bobcat
Oct 2024$3.38M8,908 sf$3791.5 km
839 Orchid Dr
Bought for a new home · Bealecon Construction
Jun 2024$5.1M10,616 sf$4801.5 km