512 APTS review · Updated October 2026
21 Rio Apartments Review
Here's our honest take on 21 Rio: current pricing, real fees, what we like, and the questions worth asking on your tour. Reviewed by 512 APTS, Austin apartment locators. If it makes your list, register with us before you tour.
2R
Photos coming soon
The quick take
21 Rio is an apartment community in UT/ Mueller, built in 2009 with 138 units. Current pricing ranges from $2,145 for 1 bd to $3,870 for 3 bd. See what we like, what we would flag, and the questions worth asking before you tour.
Market context: starting prices across the 116 UT/ Mueller communities we track typically run $999–$1,534, and 21 Rio's $2,145 starting price sits above that range.
Pricing & floorplans
1 bd
$2,145 from
681 sq ft
2 bd
$2,640 from
1052 sq ft
3 bd
$3,100 from
1196 sq ft
All floorplans & layouts
| Plan | Sq ft | W/D | Price |
|---|---|---|---|
| 1 Bedroom 1 bd / 1 ba | 681 | Stacked machines | $2,145–$2,748 |
| 2 Bedrooms 2 bd / 1 ba | 1052 | Stacked machines | $2,640–$3,600 |
| 3 Bedrooms 3 bd / 1 ba | 1196 | Full/Stk machines | $3,100–$3,870 |
Pricing checked October 8, 2026. Apartment pricing changes daily. Treat these as starting points, and we'll confirm today's exact quote when you register.
Where it sits
2101 Rio Grande St, Austin, TX. See it on our live map with every nearby option →
What to know before you tour
👍 What we like
- +Built 2009, an established community: ask which units have been renovated
- +Full-size washer/dryer in unit
- +Standouts here: a pool, a fitness center, and gated entry
- +Smaller community (138 units), quieter than the mega-complexes
- +Managed by University Partners, so you know who runs the place before you tour
📝 Questions to ask on your tour
- 1.Fees listed here: $300 admin fee. Ask if either is waived or credited right now, and whether the admin fee is refundable if you are not approved.
- 2.The deposit is listed as $0. Ask for your total move-in number in writing: deposit, fees, first month, and any required renters insurance.
- 3.Which lease lengths get the best rate? The same unit can price very differently at 6, 12, or 15 months, so have them run a couple of options.
- 4.Electric, water are added on top of the rent price. Ask which utilities you set up yourself and what they run in an average month.
- 5.Is the exact unit you were quoted ready by your move-in date, and how long will they hold it while you decide?
The fine print
Community fees & deposit
Paid to 21 Rio, not to 512 APTS.
- Deposit: $0
- Admin fee: $300
Utilities
Rent + electric, water
Location
2101 Rio Grande St, Austin, TX · UT/ Mueller
Touring 21 Rio? Register and earn rewards.
Register with 512 APTS before you tour — it's your locator's job to let 21 Rio know you're working with us. That's the key to earning your rewards when you sign a lease.
21 Rio: your questions, answered
How much is rent at 21 Rio?
1 bd units start around $2,145/mo; 2 bd units start around $2,640/mo; 3 bd units start around $3,100/mo. Pricing changes daily, so register with 512 APTS (free) and we'll confirm today's rates and any specials.
What fees should I expect at 21 Rio?
Deposit: $0. Admin fee: $300. Always confirm fees on your quote sheet — they can change.
Where is 21 Rio located?
2101 Rio Grande St, Austin, TX, in the UT/ Mueller area of Austin.
How do I tour 21 Rio with 512 APTS?
Sign up and hit "Register me at this property." Your locator receives your details and handles registration with the leasing office before you tour, with 512 APTS as your referral source. Check your Tours page for the latest status, and your locator can confirm today's pricing and specials for you.
What does registering mean?
When you register with 512 APTS, your locator receives your information (beds, budget, move-in date) as a guest card and handles registration with the leasing office before you tour. When you tour and apply, make sure to list 512 APTS as your referral source, that's what earns you your rewards.
What happens when I click register?
Your locator receives your details and handles registration with the leasing office. Check your Tours page for the latest status before you visit.
More in UT/ Mueller
Comparing options? We've pulled similar listings in UT/ Mueller.
How we make money: 512 APTS is a licensed apartment locating service. When you list us as your referral source on your application (when it asks 'how did you hear about us?'), that property pays us a referral commission for the introduction. Properties don't pay to be reviewed, can't edit our reviews, and we flag the downsides we know about. Pricing and fees change daily; always confirm details on your official quote.