Walnut

A low-density residential city known for its schools and open space.

Snapshot

Population

27,611

US Census ACS, 2024 / FBI UCR Table 8, 2024

Median home price

$1,227,500

Redfin, 2026-05

Median rent

$3,202/mo

US Census ACS, 2024

Crime / 1k

20.2

FBI UCR Table 8, 2024

Median sale price, year over year:▼ -5.4% (falling)Redfin, 2026-05

5-year crime trend:▲ +27.1% (rising)FBI UCR, 2019→2024

Market

Price / sq ft

$644

Redfin, 2026-05

Months of supply

5.9

Redfin, 2026-05

Median days on market

Redfin, 2026-05

Renter-occupied

16.2%

US Census ACS, 2024

Median household income

$129,449

US Census ACS, 2024

Housing units

9,230

US Census ACS, 2024

Developments

Alamo Villages
70 units
Walnut entitled 70 townhomes on a former shopping center, car wash, and gas station in September 2024 through a bespoke specific plan — 23 months later the center is still standing with no building permit in public records, and tenants noticed to vacate in early 2025 remain in place.

What you can build here — ADU

City departmentVHFHSZ

Typical SFR: 1 ADU + 1 JADU under WMC §6.08.210 (Ord 25-04 / 26-05). Size up to 1,000 sq ft (min 800-850 protected). Height 16-18 ft. State fee exemptions apply. 60-day ministerial clock.

Municipal code ADU ordinance

Last verified 2026-08-18. Not legal advice — confirm current requirements with Walnut's planning department. See the statewide ADU floor every city sits on top of.

Walnut

Snapshot

Market

Developments

Alamo Villages

What you can build here — ADU