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Union 9Seventy Boulder Co 1 of 12

Union 9Seventy

$1,555 – $2,499/mo

970 28th St, Boulder, CO, 80303

What floor plans are available at Union 9Seventy?

Union 9Seventy currently lists 3 floor plans across 34 available units, from one-bedroom to two-bedroom, starting at $1,555/mo. 11 one-bedrooms at $2,499/mo (563–689 sq ft), earliest move-in Sep 23. 23 two-bedrooms from $1,555 to $1,605/mo (868–999 sq ft), earliest move-in Sep 23. Prices checked September 24, 2026.

1x1

Starting at $2,499

1 Bedroom • 1 Bath • 563 – 689 Sq Ft

11 available unitsPriceSq ftAvailableOpen unit
1x1$2,499646Sep 23
1x1$2,499611Sep 23
1x1$2,499646Sep 23
1x1$2,499577Sep 23
1x1$2,499577Sep 23
1x1$2,499563Sep 23
1x1$2,499611Sep 23
1x1$2,499689Sep 23
1x1$2,499689Sep 23
1x1$2,499689Sep 23
1x1$2,499563Sep 23

2x2A

Starting at $1,555

2 Bedrooms • 2 Baths • 868 – 999 Sq Ft

20 available unitsPriceSq ftAvailableOpen unit
2x2A$1,555999Sep 23
2x2A$1,555984Sep 23
2x2A$1,555999Sep 23
2x2A$1,555868Sep 23
2x2A$1,555868Sep 23
2x2A$1,555868Sep 23
2x2A$1,555999Sep 23
2x2A$1,555984Sep 23
2x2A$1,555961Sep 23
2x2A$1,555961Sep 23
2x2A$1,555937Sep 23
2x2A$1,555999Sep 23
2x2A$1,555886Sep 23
2x2A$1,555906Sep 23
2x2A$1,555937Sep 23
2x2A$1,555961Sep 23
2x2A$1,555961Sep 23
2x2A$1,555951Sep 23
2x2A$1,555937Sep 23
2x2A$1,555937Sep 23

2x2B

Starting at $1,605

2 Bedrooms • 2 Baths • 970 Sq Ft

3 available unitsPriceSq ftAvailableOpen unit
2x2B$1,605970Sep 23
2x2B$1,605970Sep 23
2x2B$1,605970Sep 23

What are the fees and lease terms at Union 9Seventy?

Rent at Union 9Seventy is $1,555 – $2,499 per month. Monthly fees include Intra-Community Transfer Fee, Parking - Garage, and Pet Rent. Due at signing: Application Fee ($35), Pet Deposit (Refundable) ($250), and Utility - Billing Administrative Fee ($6.44). The earliest listed move-in is Sep 23. Prices checked September 24, 2026.

  • Rent

    $1,555 – $2,499/mo
  • Earliest move-in

    Sep 23

Monthly fees

Intra-Community Transfer Fee

$300/mo

Parking - Garage

$90/mo

Pet Rent

$35/mo

Renters Liability/Content - Property Program

$13/mo

Due at signing

Application Fee

$35

Pet Deposit (Refundable)

$250

Utility - Billing Administrative Fee

$6.44

What amenities does Union 9Seventy have?

Union 9Seventy lists 14 amenities, including a gym, a pool, and pet-friendly spaces.

  • 24/7 Fitness Center

  • Air Conditioning

  • Clubhouse

  • Dishwasher

  • Fitness Center

  • Gated Access

  • Heated Resort-Style Pool

  • Outdoor Cabanas W/Gas Grills

  • Patio/Balcony

  • Pet Friendly

  • Smoke Free

  • Study Center

  • Swimming Pool

  • Washer/Dryer


What do the amenities at Union 9Seventy look like?

  • Pool
    2 photos
  • Gym
    2 photos
  • Work space
  • Lobby

Where is Union 9Seventy?

Union 9Seventy is at 970 28th St, Boulder, CO, 80303.

970 28th St, Boulder, CO, 80303


What is the neighborhood around Union 9Seventy like?

From Union 9Seventy, the nearest grocery store is Safeway (18-minute walk), the nearest transit stop is Baseline Rd & 29th St (12-minute walk), the nearest park is Arrowwood Park (12-minute walk), and the nearest coffee shop is Bad Ass Coffee of Hawaii (12-minute walk).

  • Nearest grocery store

    Safeway · 18-minute walk
  • Nearest transit stop

    Baseline Rd & 29th St · 12-minute walk
  • Nearest park

    Arrowwood Park · 12-minute walk
  • Nearest coffee shop

    Bad Ass Coffee of Hawaii · 12-minute walk

Residents give Union 9Seventy a C grade (about 3.7 out of 5) from 100+ reviews. Union 9Seventy offers a convenient campus-adjacent location with modern units and responsive maintenance, earning strong praise from many residents. However, significant concerns persist regarding thin walls and noise, HVAC system reliability, hallway cleanliness, high pricing, and parking garage security issues.

3.70 · 100+ reviews
Overall rating
Positive
Mixed
Neutral
Negative
Management4.0
Amenities and Shared Spaces2.8
Building Quality2.7
Location4.0
Maintenance3.3

Union 9Seventy offers a convenient campus-adjacent location with modern units and responsive maintenance, earning strong praise from many residents. However, significant concerns persist regarding thin walls and noise, HVAC system reliability, hallway cleanliness, high pricing, and parking garage security issues. Staff friendliness is consistently noted as a bright spot, though management responsiveness varies.

Management and office staff receive consistently positive feedback for responsiveness, friendliness, and helpfulness, with many residents praising prompt communication and willingness to assist. However, a notable minority report significant concerns about maintenance response times, billing practices, and policy enforcement. Recent staff changes appear to have improved service quality, though some residents cite ongoing issues with maintenance delays and facility upkeep.

Amenities at this property include a gym, pool, study spaces, and in-unit laundry, with staff generally praised as helpful and responsive. However, the pool has experienced recurring maintenance issues including algae and cleanliness concerns, and the gym is described as limited in size and equipment. Parking challenges are frequent, including garage security concerns, limited availability, and high monthly fees ($80–$120). Common-area upkeep issues include hallway cleanliness and package room organization.

Residents report significant building quality concerns, particularly regarding noise insulation from thin walls and sound transmission between units. HVAC systems have experienced recurring failures including prolonged heating and cooling outages. Maintenance response times are inconsistent, with some reports of delays spanning days to weeks. Positive feedback highlights modern finishes, amenities, and occasional prompt maintenance service.

The property offers a highly convenient location near campus with excellent walkability for students and strong amenities including a fitness center and pool. Most residents praise the responsive maintenance and friendly staff, though some report concerns about parking logistics in the underground garage, power reliability, and climate control performance. Pricing is consistently noted as high relative to the market.

Maintenance response times are inconsistent, ranging from same-day service to multi-week delays. Common issues include HVAC system failures (inadequate cooling and heating), plumbing problems (low hot water pressure), and door/seal defects. While some residents report responsive maintenance staff, others describe prolonged unresolved issues and poor follow-up communication from management.


Is Union 9Seventy walkable?

Union 9Seventy is walkable (grade C), transit is minimal (grade F), and biking is very bikeable (grade A).

WALK

Walkable

TRANSIT

Minimal Transit

BIKE

Very Bikeable


What is Union 9Seventy like?

9Seventy is located in beautiful Boulder, CO on 28th St. across from campus.

9Seventy is located in beautiful Boulder, CO on 28th St. across from campus. This idyllic location puts you steps from the University of Colorado, a jog to 29th St. Mall, a bike ride from Chataqua Park, and in the middle of everything else Boulder has to offer. When you get home and kick off your hiking boots enjoy the plethora of amenities 9Seventy has to offer. Take in some sun by the resort-style pool or get ready to hit the trails in the bike repair station. Hangout with friends in the clubhouse or break a sweat in the fitness center. 9Seventy offers studio, one, two, and three bedroom apartments. Each apartment is well appointed with hardwood style flooring, stainless steel appliances, modern fixtures, and in many cases balconies with breathtaking views. 9Seventy has raised the bar for apartment living in Boulder, CO. Contact us today to find your next perfect home!


How big is Union 9Seventy?

Union 9Seventy is a 48-unit student.

  • Building

    Apartment · Student
  • Total units

    48

What schools are near Union 9Seventy?

Cottage School is 0.3 miles from Union 9Seventy. 10 schools are listed nearby.

SchoolTypeLevelDistance

Cottage School

Private · Preschool
PrivatePreschool0.3 mi

Boulder Outdoor Child Care Center

Private · Preschool
PrivatePreschool0.7 mi

High Peaks Elementary School

Public · Elementary
PublicElementary0.8 mi

Boulder Community School/Integrated Studies

Public · Elementary
PublicElementary0.8 mi

Horizons K-8 School

Charter · Middle
CharterMiddle1.3 mi

Eisenhower Elementary School

Public · Elementary
PublicElementary1.3 mi

Sage Elementary School

Private · Elementary
PrivateElementary1.3 mi

Boulder Ymca-Eisenhower

Private · Preschool
PrivatePreschool1.3 mi

Peter Pan Co-Op Pre-School

Private · Preschool
PrivatePreschool1.4 mi

Mountain View Pre-School

Private · Preschool
PrivatePreschool1.4 mi

How do I contact Union 9Seventy?

Union 9Seventy is managed by Greystar. Call 303-848-3212 to tour or ask about availability.