The Austin Office Market in September 2026: Steady Rents, Shrinking Pipeline
Austin’s office market is doing something it hasn’t done in a while: holding steady in the right direction. Vacancy is down year over year, rents are inching up instead of sliding, and tenants are absorbing space faster than developers are delivering it. It’s not a boom — but it’s no longer a slide, either.
Here’s where things stand as of mid-September, with the numbers courtesy of CoStar’s current Austin office report (data as of September 16, 2026).
The market at a glance
- Vacancy: 15.7% — down 0.7 points from a year ago and holding at the level it reached in the spring. Still high by Austin’s historical standards (the long-run average is closer to 11%), but no longer climbing.
- Net absorption: about 2.5 million SF over the trailing twelve months, with roughly 1.8 million SF of that so far in 2026. Tenants are taking more space than they’re giving back.
- Asking rents: about $44/SF full-service on average, up 1.7% year over year. Landlords are keeping face rents flat-to-up and competing with concessions instead.
- Under construction: about 1.1 million SF, the smallest pipeline in years. Waterline’s 715,000 SF downtown is the last big speculative tower in the cycle, and nothing of that size has started behind it.
What it costs, by building class
- Class A (4–5 Star): about $56/SF asking, with 20.5% vacancy — the most available space, and the most demand. On a triple-net basis, the CBD and Domain run roughly $38–$46/SF NNN, trophy towers about $53, and comparable suburban buildings in the Northwest and Southwest closer to $24–$33.
- Class B (3 Star): about $38/SF, with 13.1% vacancy.
- Class C (1–2 Star): about $34/SF, with 11.6% vacancy.
Notice the pattern: the newest, most expensive buildings have the highest vacancy, yet they’re where the absorption is happening. That’s the flight to quality — and the concessions on that space are still generous.
Where the deals are
Downtown is still the most expensive address in the market at about $60/SF asking, with a fifth of it vacant. East Austin is next at about $50, and it carries the highest vacancy in the city at 28%. The Domain and North Austin sit around $47 with 12.6% vacancy. For value, look west and north: Northwest Austin quotes about $38.50 and absorbed more space over the past year than any other submarket, and Round Rock is the tightest of Austin’s major submarkets at under 5% vacancy.
The big signatures this year tell the same story. Jackson Walker and Virtu Financial took a combined 170,000 SF at The Republic downtown, Renesas signed 95,000 SF at San Clemente in the Southwest, and Qualcomm committed to 66,000 SF at Parmer Business Park. On the sales side, One Eleven Congress traded for $208 million in July and 405 Colorado went for $151 million — about $733 a foot for a new downtown tower. Buyers are back for the right assets.
What this means for you
If you’re a tenant, this is still your market, but the easy part is ending. Vacancy above 15% means landlords are still competing for good credit with free rent and TI dollars — especially in the newer buildings. With almost nothing new coming behind Waterline, though, the best blocks of quality space will get thinner through 2027. If your lease expires in the next 12–18 months, start now while you have options.
If you’re an owner, absorption is real, and the pipeline drying up works in your favor. But tenants are shopping hard, and the buildings that lease are the ones priced honestly and marketed actively. Well-positioned space is moving. Quietly-listed or overpriced space is not.
What the averages can’t tell you is your building, your block, and your timing. If you want a read on your specific situation — what your space should rent for, or what you should be paying — that’s the question we answer every day.
Source: CoStar Austin Office Market Report, data as of September 16, 2026. See our Austin Office Market guide for the full rate and vacancy picture, or browse office space by area: Downtown, Central, North & Domain, Northwest, South, Southwest, East, Cedar Park & Round Rock.









An Austin landlord suddenly loaded up the incentives to entice one of our clients to move forward with their Class B, suburban office space. This included 4 months of free base rent on the front of a 64-month lease and an increase in their tenant improvement allowance from $20 per SF to $35 (which is a very generous allowance for 2nd generation space). The total in new concessions for our client was around $100,000 or 4.5%.