21818 N 21st Ave, Phoenix, AZ 85027

Retail · Phoenix · Phoenix metro, AZ

One of 7,090 reachable retail buildings in Phoenix. Larger than 2% of retail buildings in Phoenix (median 4,017 SF), derived from assessor records.

County gross building area
576 SF, Maricopa County Assessor
Lot size
9,800 SF, Maricopa County Assessor
Year built
1990, Maricopa County Assessor
Stories
1, Maricopa County Assessor
Predominant use
Auto/Truck Storage Lot, Maricopa County Assessor
Assessed value
$262,243, per the Maricopa County Assessor (not a market appraisal)
Assessed value per building SF
$455.28/SF, derived from assessor records
Building area / lot
0.06, derived from assessor records
Vintage
1990s vintage
County use code
AUTO/TRUCK STORAGE LOT

Nearby comparable buildings

Same building type, by distance. Assessor facts only; not an opinion of value.

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Sale history and market context

MakeMe Estimate: $349K (estimated market value), with a likely range of $279K to $414K (half of recent verified sales in this segment landed inside that range). Computed as the county's full cash value of $262,243 times a 1.33 market ratio, measured from 3891 verified arm's-length sale prices vs county values (retail sales in Phoenix, through 2026-06-29). Not an appraisal. How this estimate works.

lower confidence: 1 comparable sale within 3 miles; nearest 0.6 mi. This property type carries wider measured error; treat the estimate as a starting point. Comparable-sale caveat: the estimate is well above (more than double apart from) the $281.47/SF median of the shown comparable sales.

Comparable sales used as evidence

Recorded arm's-length sales of similar buildings nearby; nearer and more recent sales rank first. Buyer and seller names are withheld. Get this data via API.

Market context: Retail in Phoenix

median verified sale $306.02/SF over the trailing 24 months; 133 sales in the last 12 months and 261 in 24 (newest verified sale 2026-05); the middle 80% of recent sales traded at 0.84x to 2.57x their county full cash value, median 1.48x (261 sales with usable county values).

  • 2022: $229.28/SF median (156 sales)
  • 2023: $281.69/SF median (120 sales)
  • 2024: $278.84/SF median (138 sales)
  • 2025: $309.52/SF median (134 sales)
  • 2026 YTD: $376.65/SF median (35 sales)

This estimate sits at 1.33x county full cash value, the 39th percentile of those recent sale premiums.

Computed from 2,143 verified arm's-length sales in Maricopa County public records (261 in the trailing 24 months). Free public records. Not an appraisal.

Value over time

$0$200K$400K$600K20262027$349K$262KCounty assessed valueMakeMe Estimate range

Dark line: county assessed value per Maricopa County tax rolls. Blue line: our estimate; dashed years are a modeled backcast built from recorded arm's-length sales in the building's segment, not estimates published at the time, and years without enough sales stay unmodeled. The shaded range is the model's measured error band; about half of verified sales in the segment land inside it. Not an appraisal. How this estimate works.

Land, site, and value history

Assessed value moved from $299,637 (2026) to $262,243 (2027), down 12% over 1 years, per county tax rolls. The 2027 roll splits $262,243 into $250,700 land and $11,543 improvements.