402 Blair St
Keystone, SD 57751
Studio
2,187 sqft
$794,400
as of Aug 14, 2026
$794,400
as of Aug 14, 2026
Studio
2,187 sqft
Home Value
Trulia Estimate
$794KSince last month
Increased$102K (+14.7%)Since last year
Increased$205K (+34.7%)Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.
Trulia Estimate
The of this home's value increased by +105% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $794K |
| July 2026 | $711K |
| June 2026 | $693K |
| May 2026 | $685K |
| April 2026 | $682K |
| March 2026 | $834K |
| February 2026 | $1.01M |
| January 2026 | $813K |
2025 | |
2024 | |
Comparable sales
These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.31 | Single-Family Home | $620,000 | 09/08/25 | 3 | 2.5 | 3,064 | |
0.14 | Single-Family Home | $395,000 | 09/08/25 | 2 | 2 | 902 | |
1.89 | Single-Family Home | $750,000 | 03/30/26 | 4 | 5 | 4,562 | |
1.89 | Single-Family Home | $950,000 | 02/12/26 | 3 | 2.5 | 3,352 | |
2.69 | Single-Family Home | $1,195,000 | 07/06/26 | 3 | 3 | 2,347 | |
3.28 | Single-Family Home | $730,000 | 01/08/26 | 2 | 2.5 | 2,161 | |
4.56 | Single-Family Home | $705,000 | 08/18/25 | 4 | 3 | 3,674 | |
4.83 | Single-Family Home | $620,000 | 04/24/26 | 4 | 4 | 1,920 | |
5.11 | Single-Family Home | $531,038 | 02/27/26 | 2 | 2.5 | 1,440 | |
5.51 | Single-Family Home | $575,000 | 10/31/25 | 2 | 2 | 2,759 |
Nearby home prices
Get a sense of expected prices in the area by checking the value of nearby homes.Address | Distance | Price | Bed | Bath | Sqft | Status |
|---|---|---|---|---|---|---|
0.31 | $618,900 | 3 | 2.5 | 3,064 | Off Market | |
0.31 | $528,800 | 3 | 2 | 2,178 | Off Market | |
0.60 | $459,999 | 6 | 2.5 | 2,238 | For Sale | |
0.69 | $623,900 | 6 | - | 1,500 | Off Market | |
1.07 | $425,000 | - | - | - | For Sale | |
1.07 | - | - | - | - | Off Market | |
1.07 | - | - | - | - | Off Market | |
1.25 | - | - | - | - | Off Market | |
1.30 | $350,000 | 1 | 1 | 754 | For Sale | |
1.35 | - | - | - | - | Off Market | |
1.35 | $515,000 | 2 | 1.5 | 1,123 | For Sale | |
1.35 | - | - | - | - | Off Market |
Local Information
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Home Highlights
Property Type
Single-Family Home
Year Built
1950
Living Area
2,187 sqft
Price/Sqft
$363
About this House
This single-family home is located at 402 Blair St, Keystone, SD. 402 Blair St is in Keystone, SD and in ZIP code 57751. This property has approximately 2,187 sqft of floor space. This property has a lot size of 7840 sqft and was built in 1950.
402 Blair St, Keystone, SD 57751 is a studio, 2,187 sqft single-family home built in 1950. It is currently off market. The Trulia Estimate is $794,400, with a rent estimate of $2,088/month.
Home Details for 402 Blair St
|
|---|
Levels, Entrance, & Accessibility Stories: 1 |
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Year Built Year Built: 1950 |
Property Type / Style Property Type: Single Family Home |
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Lot Area: 7840 sqft |
Price and Tax history
| Year | Property tax | Tax assessment |
|---|---|---|
| 2024 | Unavailable | $452,700 |
Home facts updated by county records
Market trends in Keystone
Last updated July 2026
Avg. sale price
—
Sale-to-List Price
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Price per sq ft
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Available listings
16
4MoM
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Around this home
What Locals Say about Keystone
At least 1 Trulia users voted on each feature.
100 % Say parking is easy
100 % Say they plan to stay for at least 5 years
100 % Say streets are well-lit
50 % Say there's wildlife
18 % Say neighbors are friendly
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
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Apartments for Rent
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Homes for sale near 402 Blair St
0.34 ACRESTHE REAL ESTATE GROUP, INC., Black Hills AOR
2.21 ACRESSILVERLEAF REAL ESTATE LLC, Black Hills AOR
2 ACRES
7.1 ACRES
3.66 ACRES
11.42 ACRES
0.5 ACRES
RE/MAX ADVANTAGE, Black Hills AOR
See more homes for sale inKeystone
Off Market Homes Near 402 Blair St
SOLDMAR 30, 2026
SOLDFEB 12, 2026
SOLDJAN 8, 2026
OFF MARKET- See more homes for sale inKeystone
Frequently asked questions about 402 Blair St
- What is 402 Blair St estimated to be worth?Trulia's estimated value for 402 Blair St in Keystone, SD is $794,400.
- Is Keystone a buyer's or seller's market?Keystone is currently a buyer's market, based on recent for-sale activity.
- What are the closest schools to 402 Blair St?The closest schools to 402 Blair St in Keystone, SD are Hill City Elementary - 02 (Pre-K, rated 7/10), Hill City High School - 01 (rated 9/10), Hill City Middle School - 04 (rated 6/10).
- How big is the lot at 402 Blair St?The lot at 402 Blair St in Keystone, SD is about 0.18 acres (7,840 sq ft).