How does Oklahoma compare with the national average for an accessory dwelling unit (ADU)?

Homeowners in Oklahoma typically recoup about 46% of the project's cost at resale, versus ~41% nationally. Oklahoma is part of the West South Central Census division, which has the 2nd-highest renovation resale returns of the 9 U.S. divisions.

What most affects the actual return in Oklahoma?

Recency and condition. In Roots' model, work under 2 years old counts fully toward resale value, then depreciates toward ~20% after 10 years. A home with a documented maintenance record also typically sells closer to asking. Market conditions in the West South Central division set the regional baseline.

Where do these numbers come from?

Roots calibrates the national baseline for an accessory dwelling unit (ADU) against the 2025 Cost vs. Value Report (Zonda), then applies a West South Central-division adjustment derived from division-level averages in the 2024 Cost vs. Value Report, plus the model's own age and condition factors. Figures are modeled estimates, not appraisals.

Is an accessory dwelling unit (ADU) worth it in Oklahoma?

Quick answer: It can be. In Oklahoma, an accessory dwelling unit (ADU) typically returns about 46% of its cost at resale, above the ~41% national average. You likely won't recoup the full cost, but Oklahoma is one of the stronger markets for it.

How Oklahoma compares

Oklahoma is part of the West South Central U.S. Census division, which has the 2nd-highest renovation resale returns of the 9 divisions in Roots' valuation model. In practice that means an accessory dwelling unit (ADU) that returns ~41% of its cost nationally typically returns ~46% for a Oklahoma home.

The same regional adjustment applies across the division (Oklahoma plus AR, LA, TX). Nationwide, the spread for this project runs from ~34% in the West North Central division to ~48% in the Pacific division. See the national breakdown for every region.

The West South Central market

Texas and its neighbors have been among the country's fastest-growing housing markets, and strong demand pushes renovation returns above the national average. Newer, sprawling suburban stock dominates, summers are punishing, and buyers pay close attention to how a home handles the heat.

Rapid population growth keeps demand for extra living space strong, even where land is plentiful.

How other projects return in Oklahoma

Project	Typical return in Oklahoma
Accessory dwelling unit (ADU) (this page)	~46%
Wood deck addition	~93%
Bathroom remodel	~83%
Basement remodel	~80%
Window replacement	~75%

Return figures are typical resale-return estimates from Roots' home valuation model. Actual results vary by market, home, and workmanship, and shouldn't be relied on for lending, insurance, or tax decisions.

Sources: national baseline for this project calibrated against the 2025 Cost vs. Value Report (Zonda); regional adjustment derived from division-level averages in the 2024 Cost vs. Value Report.

Protect the value you add

Whatever the project returns on paper, condition decides what you actually get: in Roots' model the value of completed work fades as it ages, and a documented maintenance record helps a home sell closer to asking. If you're planning around resale value, start with upkeep. The free maintenance checklist generator builds a seasonal schedule for Oklahoma homes in about a minute.

The bottom line

“According to Roots' home valuation model, Oklahoma's West South Central region has the 2nd-highest renovation resale returns of the 9 U.S. Census divisions. An accessory dwelling unit (ADU) there typically recoups about 46% of its cost, within a nationwide range of ~34% to ~48%.” — Roots home valuation model (regionally adjusted resale-return estimates)

Free tool Keep your home in the condition that holds its value The homes that hold their value are the ones that stay well maintained. Build a free maintenance checklist tuned to your home. It takes about 30 seconds and there is no signup.

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Frequently asked questions

Is an accessory dwelling unit (ADU) worth it in Oklahoma?: It can be. In Oklahoma, an accessory dwelling unit (ADU) typically returns about 46% of its cost at resale, above the ~41% national average. You likely won’t recoup the full cost, but Oklahoma is one of the stronger markets for it.
How does Oklahoma compare with the national average for an accessory dwelling unit (ADU)?: Homeowners in Oklahoma typically recoup about 46% of the project’s cost at resale, versus ~41% nationally. Oklahoma is part of the West South Central Census division, which has the 2nd-highest renovation resale returns of the 9 U.S. divisions.
What most affects the actual return in Oklahoma?: Recency and condition. In Roots’ model, work under 2 years old counts fully toward resale value, then depreciates toward ~20% after 10 years. A home with a documented maintenance record also typically sells closer to asking. Market conditions in the West South Central division set the regional baseline.
Where do these numbers come from?: Roots calibrates the national baseline for an accessory dwelling unit (ADU) against the 2025 Cost vs. Value Report (Zonda), then applies a West South Central-division adjustment derived from division-level averages in the 2024 Cost vs. Value Report, plus the model’s own age and condition factors. Figures are modeled estimates, not appraisals.

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