Developer Shravan Parsi Breaks Down Austin's Office-to-Housing Math

Downtown Austin held a 20.6% office vacancy rate in the 2026 State of Downtown report, with roughly 13,976 residents living in a district that draws more than 160,000 visits a day. Nationally, cities have reached for an obvious fix: a record 90,300 apartments now sit in the office-to-residential conversion pipeline for 2026, up 28% in a year, while office demolitions and conversions exceeded new office construction across the country in 2025. Austin, with all that vacancy, has completed exactly one modern office-to-residential conversion in its history.

The gap between the idea and the record is a math problem, and Shravan Parsi has spent this year talking about it from the practitioner's side. The CEO of Austin-based American Ventures, a former pharmaceutical scientist with a roughly $600 million mixed-use development pipeline along the Austin-San Antonio corridor, joined Hines and Mark Hart Architecture on Bisnow's "Turning Office into Community" panel downtown in late August.

"A conversion is three deals stacked on top of each other: you buy the building, you buy it out of its old use, and you buy your way through its physical limits," Parsi said. "Most towers fail at least one of those purchases."

The math that kills most conversions

Start with the physical screen. Gensler assessed more than 1,300 office buildings across North America and found only 25% make suitable conversion candidates, because apartments need the window access, the everywhere-plumbing, and the shallow floor plates that offices were built to avoid. Austin planning staff have put the local threshold at floor plates of 15,000 square feet or less, a test most of the city's modern towers fail.

The financial screen is harder still. Morgan Stanley pegs the average cost of buying and converting an office at $685 per square foot, against $588 to build new multifamily from the ground up, and considers 30% occupancy the ceiling at which a conversion can even pencil. A tower only becomes convertible after its price collapses, so the deals happen at the bottom of a market, not the middle.

What survives both screens looks specific:

• A shallow floor plate, roughly 15,000 square feet or less, so every unit reaches a window

• A price reset, since sellers still holding out for office values price out the conversion buyer

• Deep vacancy, because a building at 61% leased is an office with problems, while a building at 25% leased is a site

• Bones from the right era, as pre-war and mid-century towers convert more readily than the deep-plate glass boxes of the 2000s

Where does Austin actually stand?

Austin's stock mostly fails the era test in the opposite direction from older cities. The buildings are too new, too expensive, and built with the deep floor plates that conversion punishes, and local developers have long told reporters that scraping an old industrial site beats converting a tower here. The one modern precedent, the Brown Building, dates to 2004, and a 2024 city audit exploring conversion feasibility concluded the economics remained out of reach at then-current prices.

The reset may now be arriving on a building-by-building basis. A 12-story, 162,000-square-foot tower at 211 East Seventh, last appraised at $23.8 million, went to market in January pitched partly as an adaptive-reuse play, and JLL's marketing language told buyers to position "ahead of a 2026/2027 leasing rebound." When brokers sell the same tower as either an office or a residential site, the market is quoting both answers at once.

Why Shravan Parsi argues for districts instead

Parsi's read is that the conversion question is usually framed one tower too narrowly. The demand Austin actually has, in his telling, is for places where housing, work, and retail share ground, and a district can deliver that mix even where no individual tower converts.

"The cheapest office conversion is the one you never do, because you added the housing next door instead," Shravan Parsi said. "A district can rebalance itself parcel by parcel. A tower has to solve everything inside one concrete frame."

His firm's own slate is built on that logic, spanning mixed-use projects from Austin's South Congress corridor to San Marcos, and his corridor thesis frames the whole region as one housing market. "People always need places to live and work, and that survives every cycle, every rate environment, and every panic," Parsi said in the August panel announcement.

The case for converting anyway

The counterargument deserves its numbers, because other cities are making conversion work at scale. New York leads the country with more than 16,000 pipeline units, and Manhattan's 25 Water Street turned a 1969 deep-plate office block into roughly 1,300 apartments by carving courtyards through the middle and stacking ten new floors on top. Cleveland has targeted 10.8% of its entire office inventory for conversion, Washington's downtown tax abatements had a dozen projects moving within two years, and Calgary pays $75 per square foot toward conversions and has approved ten of them.

Every success story leans on one of two crutches: buildings that were old and shallow, or public money that closed the gap physics and price could not. Gensler's data shows that when a building passes the screen, conversion can run about 30% cheaper than new construction, which means the payoff for finding the rare qualifying tower is real. Austin has subsidized neither side of that equation so far, and roughly a third of downtown land sits in public hands, an inventory the city's own housing push has started to eye, naming sites along East Fifth Street, the former HealthSouth property at 15th and Red River, and Congress Avenue north of the Capitol.

What the next two years decide

Downtown's vacancy is edging down rather than up, sublease space has shrunk by a quarter from its peak, and Austin still ranks first nationally for office-using job growth, which cuts against the fire-sale scenario that makes conversions cheap. The Downtown Alliance's own president framed this year's report as a district managing growth rather than managing decline, which is not the language of a market about to hand towers to converters at land value. The likelier Austin outcome is the one Shravan Parsi described on the panel circuit, a handful of true conversions where the rare building qualifies and a much larger wave of district-scale mixed-use adding the housing around the towers instead of inside them.

Whether that is a failure of imagination or a correct reading of the spreadsheet depends entirely on which building you are standing in. The math has an answer for each one, and for most of Austin's skyline, the answer is still the neighbor's lot.