16-1-8 RESIDENTIAL DISTRICTS: R-1-21 development restrictions
Unofficial copy. It may be out of date. Not legal or zoning advice. Zoning rules change, and only the city or county can say for sure what is allowed on a property. Confirm with the city or county planning department before you buy, sign or build.
The official Erda code is at https://erda.gov/city-codes-and-maps/.
Text pulled 2026-10-19 from this source.
Tables (like use tables) may not copy cleanly, so check any table against the official code.
Confirm anything here with Erda planning before you rely on it.
The development restrictions in R-1-21 zoning districts are as follows:
(1) Minimum lot size – 21000 square feet.
(2) Minimum width – 100 feet.
(3) Minimum frontage on a public street or an approved private street – 50 feet.
(4) Minimum yard setback requirements:
(a) front yard – 30 feet.
(b) rear yard:
(i) main building – 30 feet; and
(ii) accessory buildings – 3 feet, provided they do not encroach on any easement.
(c) side yard:
(i) main building – 8 feet; and
(ii) accessory buildings – 3 feet, provided they do not encroach on any easement.
(5) On corner lots, two front yards and two side yards are required.
(6) Maximum building height – 35 feet.
(7) Maximum building coverage – 20 percent
(8) Required improvements:
(a) street grading;
(b) street base;
(c) curb and gutter;
(d) sidewalk;
(e) on-site surface drainage facilities;
(f) culinary water facilities;
(g) wastewater disposal; and
(h) street monuments.
16-1-7 RESIDENTIAL DISTRICTS: Purposes of Residential District R-1-21 · 16-3-1 EXEMPTION FROM AREA REQUIREMENTS: Uses conditionally exempt from frontage, width, and area requirements of the zoning district