House Prices

OST South Union Houston, TX House Prices & Home Values 2026


Average Data

average house price$277,354
average size per house1907 ft²
average price per ft²158 $ / ft²

04/04/2026 - The value range (VR) for house prices in OST South Union Houston, TX is $150.1/ sqft to $165.9/ sqft. An average home with 1907 sqft costs approximately $309,140 to $341,682. Houston, TX includes 1 ZIP codes and it is located in Harris county. The lowest prices are found in ZIP 77021, while the highest are in ZIP 77021. The average price per sqare feet is $158. Our analysis is based on 11 property listings.

Avergage prices by ZIP codes OST South Union Houston

77021174 $ / ft²




Historical development of home values in OST South Union Houston

Year Estimated value (USD) Change vs. 2025
2010 $128,808 -53.6%
2011 $123,827 -55.4%
2012 $123,494 -55.5%
2013 $128,110 -53.8%
2014 $134,480 -51.5%
2015 $141,382 -49.0%
2016 $148,760 -46.4%
2017 $156,789 -43.5%
2018 $165,457 -40.3%
2019 $173,129 -37.6%
2020 $182,079 -34.4%
2021 $207,096 -25.3%
2022 $241,427 -13.0%
2023 $254,596 -8.2%
2024 $269,325 -2.9%
2025 $277,354 0.0%

Graph: estimated home values in OST South Union Houston over time (USD)



Example: 100% financing house in OST South Union Houston

Loan amount: $277,354

Interest rate: 6.48%

Fixed monthly payment: $1,749.42

Breakdown in the 1st month:
Interest portion: $1,497.71  –  Principal portion: $251.71

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $17,881.20 $3,111.84 $274,242.16
2 $17,673.45 $3,319.58 $270,922.58
3 $17,451.84 $3,541.20 $267,381.38
4 $17,215.43 $3,777.61 $263,603.78
5 $16,963.24 $4,029.80 $259,573.98
6 $16,694.21 $4,298.83 $255,275.15
7 $16,407.22 $4,585.81 $250,689.34
8 $16,101.07 $4,891.96 $245,797.38
9 $15,774.49 $5,218.55 $240,578.83
10 $15,426.10 $5,566.93 $235,011.90
11 $15,054.45 $5,938.58 $229,073.32
12 $14,658.00 $6,335.04 $222,738.28
13 $14,235.07 $6,757.96 $215,980.31
14 $13,783.91 $7,209.12 $208,771.19
15 $13,302.63 $7,690.40 $201,080.79
16 $12,789.22 $8,203.81 $192,876.98
17 $12,241.54 $8,751.49 $184,125.49
18 $11,657.30 $9,335.74 $174,789.75
19 $11,034.04 $9,958.99 $164,830.76
20 $10,369.19 $10,623.85 $154,206.91
21 $9,659.94 $11,333.09 $142,873.82
22 $8,903.35 $12,089.68 $130,784.14
23 $8,096.25 $12,896.79 $117,887.35
24 $7,235.26 $13,757.77 $104,129.58
25 $6,316.80 $14,676.24 $89,453.34
26 $5,337.02 $15,656.02 $73,797.33
27 $4,291.83 $16,701.21 $57,096.12
28 $3,176.86 $17,816.17 $39,279.95
29 $1,987.46 $19,005.57 $20,274.38
30 $718.66 $20,274.38 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in OST South Union Houston, TX


1500 sqft3900 sqft
Ø selling price$309,712$658,842
Ø fast selling$281,557$592,957
Ø high price sale$337,868$724,726

In 2026, houses in OST South Union Houston, TX will be offered at an average price of $158 per square foot. A 1,500 sqft home priced at $309,712 is 24.84% more expensive per square foot than a 3,900 sqft home priced at $658,842. Home prices in OST South Union Houston, TX vary significantly depending on the property’s condition and exact location. For a quick sale, a 2,700 sqft home should be listed at around $456,121. Sellers who can wait longer may achieve a higher price of up to $557,481.


Overview of OST/South Union, Houston, TX

OST/South Union is a centrally located Houston, TX neighborhood along the Old Spanish Trail corridor with a mix of historic roots and modern momentum.

Its proximity to Downtown Houston, the Texas Medical Center, and the University of Houston makes it a strategic base for commuters and students.

The area is seeing redevelopment and revitalization while retaining a strong sense of community pride and culture.

Location and Connectivity

Major arteries like I-610, State Highway 288, and Old Spanish Trail provide quick connections to the Museum District, Midtown, and Hobby Airport.

Residents also benefit from METRO bus routes and improving pedestrian and bike infrastructure that support car-light living.

Housing and Lifestyle

Real estate and homes for sale in OST/South Union range from classic bungalows and ranch houses to new construction, offering comparatively affordable Houston housing options.

Local buyers and investors appreciate rising value potential, while long-time neighbors foster block-by-block engagement and active civic clubs.

Amenities and Attractions

Dining spans casual soul food spots, taquerias, and barbecue joints, with nearby parks, community centers, and sports fields adding everyday convenience.

Cultural attractions and top-tier healthcare in the adjacent Texas Medical Center and Museum District are minutes away for world-class learning and care.

Why Consider OST/South Union

For buyers searching for location, value, and authentic neighborhood character, OST/South Union delivers a compelling Houston lifestyle close to everything.



FAQ – Home Values in OST South Union Houston

What is the median home value in OST South Union Houston in 2026?

In 2026, the typical home value in OST South Union Houston is about $277,354 for an average home size of 1907 square feet. This corresponds to an average price of roughly $158 per square foot.

What is the average cost per square foot in OST South Union Houston?

In 2026, homes in OST South Union Houston sell for an average of around $158 per square foot, with a typical range between $150.1 and $165.9 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in OST South Union?

The average home size in OST South Union Houston is about 1907 square feet, with an estimated 2026 value around $277,354.



Neighborhoods close to OST South Union Houston, TX

Northside Northline Houston, TX176 $ / ft²
Tres Palacios Oaks Blessing, TX553 $ / ft²
Coles Crossing Cypress, TX146 $ / ft²
Downtown Houston, TX210 $ / ft²
Downtown Waco Waco, TX228 $ / ft²
Chisholm Trail Ranch Fort Worth, TX153 $ / ft²




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