Isengard in Austin, TX

Isengard, filed as Building 06, is a completed interior renovation project located at 1312 Dalton Lane in Austin, Texas. The building encompasses 48,185 sq ft of space, which underwent significant alteration work under a privately funded agreement.

The project was developed by Stream Realty Partners and designed by Perkins&Will. The estimated cost for this renovation was $2,551,052. This figure places the project above the county median for similar renovation filings in Travis County. However, the cost per square foot of $53 is below the county median of $103 for comparable work. The scheduled build window of 333 days was longer than the county median of 98 days for this type of construction.

Construction began in May 2025 following plan review completion in April 2025. The filing indicated an April 2026 completion date, which has passed. The building passed its final TDLR accessibility inspection in June 2026. This confirms that the construction phase is complete and the project has met the required accessibility standards for its alteration scope.

Project Context and Local Activity

Stream Realty Partners has six other TDLR-registered projects totaling $995,000, including locations in Addison and Houston. Perkins&Will has designed six other registered projects totaling $25,741,368, with significant work in Austin, Houston, and Dallas. In the immediate vicinity of 1312 Dalton Lane, other registered renovation projects include Met Center Building 2 and Met Tech Center. The area also hosts businesses such as P. Terry's Burger Stand and Saronic Technologies, Inc.

City of Austin permit records show at least 25 permits on file at this street address between July 2025 and April 2026. These include electrical, building, mechanical, and plumbing permits. The most recent permits describe the remodel of an existing light manufacturing building with new dock doors and office finish-out work. The Travis County unemployment rate was 4 percent in June 2026, higher than a year earlier.