Building Setbacks & Zoning in Polk County, IA (2026)

3 rules for unincorporated Polk County, Iowa.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Polk County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Setback Rules

Polk County's single-family bulk standards set minimum yard setbacks by zoning district. In Low Density Residential (LDR) the minimums are 35 feet front, 10 feet side, and 35 feet rear; agricultural districts require 50 feet front and rear. City-owned land uses municipal setbacks.

Building Setback Requirements in Unincorporated Polk County

Some Restrictions

Polk County Zoning Ordinance, Table 6.1 (Standard Single Family Regulations)

Setbacks Front 50 50 75 50 35 30 30 30 Side 25 25 25 15 10 8 8 8 Rear 50 50 75 50 35 30 30 30 (Zoning Districts AG AT ER RR LDR MDR HDR MU).

Full ordinance details →Official source ↗

Structure Height Limits

Polk County caps single-family building height at 40 feet in agricultural districts and 35 feet in the residential and mixed-use districts. Accessory buildings cannot exceed the principal building's height or 24 feet, whichever is greater. Cities set their own height limits.

Building Height Limits in Unincorporated Polk County

Some Restrictions

Polk County Zoning Ordinance, Table 6.1 (Standard Single Family Regulations)

Maximum Building Height 40 40 35 35 35 35 35 35 (Zoning Districts AG AT ER RR LDR MDR HDR MU).

Full ordinance details →Official source ↗

Lot Coverage Limits

Unincorporated Polk County caps how much of a residential lot can be covered by buildings using Table 6.1 of the Zoning Ordinance, with limits set per zoning district from 5% in Estate Residential up to 40% in the High Density and Mixed Use districts, and the cap applies to accessory buildings too.

Max Lot Coverage in Unincorporated Polk County

Some Restrictions

Polk County Zoning Ordinance, Table 6.1 (Standard Single Family Regulations)

Table 6.1 Table of Single-Family Bulk Standards (Standard & Cluster & Mobile Home) Standard Single Family Regulations Setbacks Maximum Maximum Building Building Zoning District AG Lot size Lot Front Side Rear Height Cover...

Full ordinance details →Official source ↗

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