Room Additions in Mustang, OK

Cost depends on the size and scope of the project — a standalone structure like our Mustang shed prices out differently than an attached room addition. We give you an exact number after a free in-home walkthrough.

Interior additions and conversions typically run 3 to 6 weeks. Larger additions or exterior builds — including standalone structures like the custom shed we built in Mustang — usually take 6 to 12 weeks. We share a realistic schedule before work starts.

Yes — most room additions and exterior structures require permits, and often engineering and inspections, and we handle all of it. Structures like our large custom shed in Mustang go through the same proper permitting process as any attached addition.

We build bedrooms, bathrooms, home offices, sunrooms, in-law suites, second-story additions, garage conversions, and bonus rooms — as well as standalone structures like the large custom shed we completed in Mustang.

Yes — Mustang and Yukon are neighboring cities on the west side of the OKC metro, and both are regular service areas for MASB Construction. If you're within 30 miles of Oklahoma City, we can take a look at your project.