Vacant lot

403 SW 5th Ave

Sundy & TenbrookDelray Beach6,434 sq ft lot (0.15 acres)Zoned R-1-A
Aerial of 403 SW 5th Ave, 20262026 · Palm Beach County · Palm Beach Co.

Aerial from 2026, the newest available. The pink line is the surveyed parcel boundary.

What it’s worth as land

From recorded sales
$167–270KMiddle half of nearby land sales, adjusted for lot size (12 sales), applied to this lot’s 6,434 sq ft.
Land price per sq ft, sized to this lot
$0$34$67

Sized to this lot, nearby land sales point to about $38 per sq ft. This parcel last sold for $110K in Oct 2024 ($17 per sq ft, the pink dot).

Does it pencil?

Build-and-sell pro forma
Supports a land price up to$4Kto build and sell a 1,750 sq ft home here at a 15% margin.
TightAt $110K for the land:Profit $9K · 1.1%Needs $564/sq ft to hit 15% · assumed $480
Land $110KBuild $569KSoft costs $57KCarry $45KSelling $50KProfit $9KSale $840K
Delray Beach calibration

Calibrated on 83 Delray Beach deals. With these build costs the calculator's land budget is a median 98% of what the builders actually paid for the lot, and within 25% of it on 47 of the 83 (the old defaults came to 85%).

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
R-1-A Single Family Residential
Flood zone
X
Lowest floor
—
Waterfront
No
Lot size
6,434 sf 0.15 acres
Ownership
Company often a builder or investor

Setbacks, height and lot coverage depend on the zoning district; see Delray Beach’s Land Development Regulations (Chapter 4, Zoning). Confirm with a surveyor and the city before you buy.

Nearby land sales

Off the water · last 5 years
AddressSoldPriceLot$/sq ftAway
415 SW 4th St
Vacant lot sale
Feb 2024$300K8,546 sf$3544 m
322 SW 5th Ave
Vacant lot sale
Dec 2021$180K6,804 sf$26134 m
300 SW 5th Ave
Vacant lot sale
Mar 2023$705K25,927 sf$27185 m
755 SW 4th St
Vacant lot sale
May 2024$225K5,907 sf$38280 m
601 SW 3rd St
Bought for a new home · J&V Residential Services
Mar 2023$120K6,020 sf$20286 m
229 SW 6th Ave
Vacant lot sale
May 2023$300K6,817 sf$44313 m
624 SW 6th Ave
Vacant lot sale
Apr 2025$230K9,953 sf$23324 m
222 SW 4th Ave
Vacant lot sale
Aug 2026$70K6,752 sf$10330 m