4006 S 21st St, Phoenix, AZ 85040

Single-Tenant Industrial · Phoenix · Phoenix metro, AZ

One of 2,871 reachable single-tenant industrial buildings in Phoenix. Larger than 70% of single-tenant industrial buildings in Phoenix (median 13,375 SF), derived from assessor records.

County gross building area
25,884 SF, Maricopa County Assessor
Lot size
72,563 SF, Maricopa County Assessor
Year built
1988, Maricopa County Assessor
Stories
1, Maricopa County Assessor
Predominant use
Warehousing, Maricopa County Assessor
Assessed value
$4,442,800, per the Maricopa County Assessor (not a market appraisal)
Assessed value per building SF
$171.64/SF, derived from assessor records
Building area / lot
0.36, derived from assessor records
Vintage
1980s vintage
County use code
WAREHOUSING

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: $5.17M (estimated market value), with a likely range of $4.13M to $6.13M (half of recent verified sales in this segment landed inside that range). Computed as the county's full cash value of $4,442,800 times a 1.16 market ratio, measured from 3891 verified arm's-length sale prices vs county values (single-tenant industrial sales in Phoenix, through 2026-06-29). Not an appraisal. How this estimate works.

lower confidence: 24 comparable sales within 3 miles; nearest 0.4 mi. This property type carries wider measured error; treat the estimate as a starting point.

Comparable sales used as evidence

Recorded arm's-length sales of similar buildings nearby; nearer and more recent sales rank first. The strongest 5 of 24 nearby verified sales are shown. Buyer and seller names are withheld. Get this data via API.

Market context: Industrial in Phoenix

median verified sale $195.35/SF over the trailing 24 months; 94 sales in the last 12 months and 180 in 24 (newest verified sale 2026-05); the middle 80% of recent sales traded at 0.95x to 1.67x their county full cash value, median 1.25x (179 sales with usable county values).

  • 2022: $183.33/SF median (113 sales)
  • 2023: $189.80/SF median (95 sales)
  • 2024: $179.49/SF median (106 sales)
  • 2025: $195.35/SF median (108 sales)
  • 2026 YTD: $260.46/SF median (21 sales)

This estimate sits at 1.16x county full cash value, the 35th percentile of those recent sale premiums.

Computed from 1,588 verified arm's-length sales in Maricopa County public records (180 in the trailing 24 months). Free public records. Not an appraisal.

Last sold: 2018-08-01 for $2,280,935 (recorded arm's-length sale).

Current ownership dates to 2018 (about 8 years) per recorded transfers.

Source: Maricopa County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.

Value over time

$0$2M$4M$6M$8M20262027$5.17M$4.44MCounty 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. Diamonds: recorded arm's-length sales. Not an appraisal. How this estimate works.

Land, site, and value history

Assessed value moved from $4,023,400 (2026) to $4,442,800 (2027), up 10% over 1 years, per county tax rolls. The 2027 roll splits $4,442,800 into $622,900 land and $3,819,900 improvements.