503 Mill Run Rd is a vacant land on a 3.8 acre lot.
Vacant landProperty Type
3.8 acresLot Size
$0Price/Acres
Source:Public Records
Redfin Estimate
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Market trends in 81146, CO
Last updated July 2026
Sale-to-List Price
79.6%
18.1% MoM
Median sale price
$79,982
$405K MoM
Avg. days on market
57d
76 days MoM
Recently sold homes
3
2 MoM
Provided by Redfin
Sale history for 503 Mill Run Rd
Date
Event
Price
Public Records
Nov 10, 2015
Sold
$16,000
Year
Property tax
Land + Additions
Assessment*
2025
$314 (−6.4%)
$4,590
2024
$336 (+2.9%)
$4,590
2023
$326 (+29.8%)
$4,743
2022
$251 (−0.3%)
$4,743
2021
$252 (+22.7%)
$3,625
2020
$206 (+0.2%)
$3,625
2019
$205 (−0.6%)
$2,900
2018
$206
$2,900
2017
$206 (−2.2%)
$2,900
2016
$211
$2,900
Tax history for 503 Mill Run Rd
Year
Property tax
Land + Additions
Assessment*
2025
$314 (−6.4%)
$4,590
2024
$336 (+2.9%)
$4,590
2023
$326 (+29.8%)
$4,743
2022
$251 (−0.3%)
$4,743
2021
$252 (+22.7%)
$3,625
2020
$206 (+0.2%)
$3,625
2019
$205 (−0.6%)
$2,900
2018
$206
$2,900
2017
$206 (−2.2%)
$2,900
2016
$211
$2,900
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Exterior
Property Information
Subdivision Name: ZAPATA SUB
Legal Description: ZAPATA UNIT 3 RESUB POR UNIT 2 & AMENDED FINAL PLAT LOT 20 BLK 1 3.80AC INCLUDING AN UNDIVIDED INTEREST IN COMMON PROPERTY WD REC #361313 10-29-15
Lot Information
Land Sq. Ft: 165,528
Legal Lot Number: 20
Legal Block Number: 1
Acres: 3.8
County Use Description: VACANT LAND
Financial
Assessor Information
Assessment Year: 2025
Tax Area: 225
Public facts
Beds: —
Baths: —
Sq. Ft.: —
Stories: —
Lot Size: 3.8 acres
Style: Vacant Land
Year Built: —
Year Renovated: —
County: Alamosa County
APN: 499931101020
Home facts updated by county records on Feb 24, 2026
Around this home
Schools
Sangre De Cristo Elementary School
Public PreK-5 • Assigned • 16.6mi
8/10
Sangre De Cristo Undivided High School
Public 6-12 • Assigned • 16.6mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
4/10 Fire Factor
2% chance of being in a wildfire in next 30 years
1/10 Heat Factor
12 days above 83° expected this year, 33 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
1/10 Air Factor
0 unhealthy days expected this year, 0 days in 30 years
Provided by First Street
Historical weather
Mosca, CO • 81146
Average low and high temperatures (°F)
38
12
50
24
58
29
60
33
67
40
81
51
81
52
80
53
73
44
65
38
48
25
45
19
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11 hours in
June and 6.7 hours in December, placing it above the
U.S. average for solar exposure.