402 Blair St, Keystone, SD 57751
OFF MARKET

$636,500

Trulia Estimate
  • Studio
  • 2,187 sqft

402 Blair St, Keystone, SD 57751

Home Value

Trulia Estimate
$637K
Since last month
Decreased$43K (-6.3%)
Since last year
Increased$37K (+6.2%)
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 +64% in the last 10 years
MonthEstimated value
2026
October 2026$637K
September 2026$583K
August 2026$679K
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
5.53
Single-Family Home
$712,500
05/04/26
5
2
1,924
7.22
Single-Family Home
$830,000
05/18/26
3
4
2,816
Home facts updated by county records

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
0.02
$609,600
2
1
950
Off Market
0.02
$604,000
Studio
-
2,016
Off Market
0.03
-
-
-
-
Off Market
0.03
-
-
-
-
Off Market
0.03
-
-
-
-
Off Market
0.03
$414,400
2
2
1,400
Off Market
0.03
$230,400
3
2
471
Off Market
0.04
-
-
-
-
Off Market
0.04
$240,500
2
1
864
Off Market
0.04
$293,100
3
2
672
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
-
-
-
-
Off Market
0.04
$155,300
2
1
840
Off Market

Local Information

  • Map ViewExplore the area around 402 Blair St.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 1950
2,187 sqft
$291/sqft

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. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $636,500, with a rent estimate of $2,197/month.

Home Details for 402 Blair St

Interior Features

Levels, Entrance, & Accessibility
Stories: 1

Property Information

Year Built
Year Built: 1950
Property Type / Style
Property Type: Single Family Home

Lot Information

Lot Area: 7840 sqft

Price and Tax history

YearProperty taxTax assessment
2024Unavailable
$452,700
Home facts updated by county records

Market trends in Keystone

Last updated September 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
9
4
MoM
Sourced by Trulia Market Trends

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

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 $636,500.
  • Is Keystone a buyer's or seller's market?
    Keystone is currently a seller'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 5/10).
  • 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).

Apartments for Rent

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