300 Old Mill Rd is a 3,158 square foot house on a 0.3 acre lot with 4 bedrooms and 3.5 bathrooms. Based on Redfin's Sunnyvale data, we estimate the home's value is $606,816.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Oct 11, 2024 • Final
Trade specific – plumbing/mechanical/electrical
Plumbing
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Bathroom Information
# of Full Baths: 3
# of 1/2 Baths: 1
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Physical Condition: Good
Floor Construction Type: Concrete
Foundation Type: Slab
Construction Type: Brick
Exterior Wall: Brick Veneer
Roof Shape Type: Hip
Building Type: Single Family
Building Improvement Type: Single Family
Property Information
Subdivision Name: HOMESTEAD PH 2B
Living Sq. Ft: 3,158
Building Sq. Ft: 3,758
# of Stories: 2
Stories Type: 2
Legal Description: HOMESTEAD PH 2B BLK C LT 10
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 600
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 13,094
Legal Lot Number: 10
Legal Block Number: C
Municipality Type: TS
Municipality Name: SUNNYVALE
Acres: 0.3006
Depth Footage: 145
Front Footage: 108
Zoning Code: Z281
County Use Description: SFR
Financial
Assessor Information
Assessment Year: 2025
Tax District County: DALLAS COUNTY
Public facts
Beds: 4
Baths: 3.5
Sq. Ft.: 3,158
Stories: 2.0
Lot Size: 0.3 acres
Style: Single Family Residential
Year Built: 2005
Year Renovated: 2005
County: Dallas County
APN: 520067800C0100000
Home facts updated by county records on Aug 31, 2026
Around this home
Schools
Sunnyvale Intermediate School
Public 3-5 • Assigned • 1.4mi
9/10
Sunnyvale Middle School
Public 6-8 • Assigned • 1.6mi
10/10
Sunnyvale High School
Public 9-12 • Assigned • 1.6mi
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
3/10 Fire Factor
0.62% chance of being in a wildfire in next 30 years
8/10 Heat Factor
7 days above 110° expected this year, 24 days in 30 years
6/10 Wind Factor
27% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Sunnyvale, TX • 75182
Average low and high temperatures (°F)
56
36
67
44
77
54
78
61
84
66
91
75
96
76
94
76
91
70
86
63
73
52
63
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9.8 hours in
June and 5.4 hours in December, placing it above the
U.S. average for solar exposure.
9.8 hrs
5.4 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$577,000 – $698,000
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