A 13-story luxury apartment tower near Austin's Domain has changed hands for $136 million, as Brandywine Realty Trust unloads another piece of its sprawling Uptown ATX development. The sale of Solaris House, a 341-unit residential building, closed on September 30, with the property 90.3% occupied at the time of the deal.
Philadelphia-based Brandywine owned 57% of the Solaris project through a joint venture and walked away with $16.3 million in net cash proceeds after repaying the venture's $76.5 million construction loan and its preferred partner, according to Brandywine's third-quarter 2026 earnings release. The company disclosed the sale as part of its broader third-quarter results, announcing that the buyer remained undisclosed. The Real Deal reported that the identity of the buyer was still unconfirmed as of the sale's disclosure.
A 66-Acre Bet North of Downtown
Solaris House sits inside Uptown ATX, Brandywine's 66-acre mixed-use community in North Austin. The 13-story tower includes 89 units in a lower-rise section called The Flats and 252 units in the main tower, according to the project's listing on Uptown ATX's property page. The building also features a 23,000-square-foot amenity terrace and a 0.3-acre ground-level park that connects directly to Solaris Park, a public greenspace open to residents.
Solaris House and a companion office tower called One Uptown were the first ground-up projects completed within the Uptown ATX development, per Brandywine's own project announcement on its blog. The broader development is planned to eventually include 3.2 million square feet of office space, 2.9 million square feet of multifamily housing, and 600,000 square feet earmarked for retail and hospitality uses, along with roughly 11 acres of green space. A new CapMetro transit station is also planned for the site, with delivery expected in 2027.
Part of a Much Bigger Sell-Off
The Solaris sale is one piece of a much larger divestment campaign underway at Brandywine. The company reported it has executed $681 million in property sales so far in 2026, far exceeding its own stated $305 million business-plan target for the year, according to the same third-quarter earnings release. Separately, as reported by bizjournals.com, the company has described its goal as pursuing up to $300 million of real estate sales this year — the two figures reflect different characterizations of Brandywine's target rather than a single confirmed number.
Solaris was not the only big Austin asset Brandywine has cashed out this year. The company also completed the sale of a wholly owned Austin office property for $151 million on July 9, 2026, according to the investor release. Meanwhile, Brandywine's Uptown office venture in Austin was 97% leased as of October 21, 2026, suggesting the firm's remaining office holdings in the area are performing well even as it sheds assets.
Austin's Apartment Market Finds Its Footing
The timing of the sale lines up with a broader stabilization in Austin's apartment market after a rough few years of oversupply. Absorption outpaced new deliveries over the trailing 12 months, pushing annual vacancy down 90 basis points to 11.5%, according to a NorthMarq market report. The firm also noted that Austin's multifamily investment market opened 2026 with its strongest first quarter since 2022, and transaction activity in the first half of the year reached its highest level since that same benchmark year.
Rents, which had been sliding for three years straight, began to reverse course in the second quarter of 2026, per a separate NorthMarq analysis, with employment growth in the Austin area outpacing national benchmarks during the same period. Deliveries of new apartment units are forecast to fall to roughly 10,200 units in 2026 — about half the pace of the prior two years — and NorthMarq projects vacancy will decline further to 11.0% by year's end.
Other data points paint a similarly busy picture for dealmaking. The median Austin multifamily sale price in the first quarter of 2026 was $193,100 per unit, NorthMarq reported, while a separate Matthews market report put the market's cap rate at 5.7% for the same period, with asking rents averaging $1,500 per unit even as rent growth declined 4.7% year over year. Matthews also found that absorption totaled 3,800 units in the first quarter, outpacing the roughly 2,000 units delivered during that same stretch.
