




- Income Restrictions
- Studio–1 Bedrooms
- $787-$1,968 Plus Fees12 Month Lease Term
About Annex Flats
Brand new Apartment building near downtown Boulder opening the end of September 2026 starting applications soon! Cafe and bakery on the ground floor and amazing event center on the rooftop for weddings, corporate and other events for rent. Residents will have a limited access to part of the roof top during non-event days with an amazing view of the flatirons. This is a Affordable community for people at the 30%-70% income levels in Boulder. Must income qualify. We have 1 bedroom and studio units. We are not student housing and if you are a full-time student you must meet the following requirements in order to eligible: A student who receives TANF A student who was previously in foster care program A student enrolled in a job training program and receives assistants under the Job Training Partnership Act A student who is a single parent.
Annex Flats is located in the Downtown Boulder Neighborhood and 80302 Zip code of Boulder, CO. This community is professionally managed by Brothers Property Management, Inc.
Property Contact Info
- Listed by:
- Agency:
- Vendor Logo:
- Website:
- View Property Website
- Call Us:
- (720) 706-2231
- Disclaimer:
Office Hours
| Monday | 8:30 am–12:00 pm |
| Tuesday | 8:30 am–12:00 pm |
| Wednesday | 8:30 am–12:00 pm |
| Thursday | 8:30 am–12:00 pm |
| Friday | Closed |
| Saturday | Closed |
| Sunday | Closed |
Floorplan Pricing and Availability
Annex Flats offers Studio to 1 Bedroom starting from $787. Here is the current pricing and availability:
New! Interactive Property Map
Studio
Floorplan 0bd
From $787
Studio, 1 BathPlus FeesAvailable NowAvailability Details
Price Availability Date Unit From $787 Available Now 0bd Model Amenities and Features
Features
- Air Conditioning
- Cable Ready
- Handrails
- Heating
- Security System
- Smoke Detector
- Sprinkler System
- Storage Space
- Tenant Controlled HVAC
- Tub/Shower
- Wheelchair Accessible (Rooms)
Kitchen
- Dishwasher
- Disposal
- Freezer
- Gas Range
- Kitchen
- Oven
- Range
- Refrigerator
Model Lease Information
Model Price Range
- $787 - $1,968
1 Bedroom
Floorplan 1bd
From $843
1 Bed, 1 BathPlus FeesAvailable NowAvailability Details
Price Availability Date Unit From $843 Available Now 1bd Model Amenities and Features
Features
- Air Conditioning
- Cable Ready
- Handrails
- Heating
- Security System
- Smoke Detector
- Sprinkler System
- Storage Space
- Tenant Controlled HVAC
- Tub/Shower
- Wheelchair Accessible (Rooms)
Kitchen
- Dishwasher
- Disposal
- Freezer
- Gas Range
- Kitchen
- Oven
- Range
- Refrigerator
Model Lease Information
Model Price Range
- $843 - $1,968
Schedule a Tour
Property Information
- 30 Units
- 4 Stories
- Built in 2026
Income Restrictions At Annex Flats
Income restrictions apply to some or all residents. Contact the community for more information.
| # Persons | 70% Income Limit | 50% Income Limit | 30% Income Limit |
|---|---|---|---|
| 1 | $73,500 | $52,500 | $31,500 |
| 2 | $84,000 | $60,000 | $36,000 |
| 3 | $94,500 | $67,500 | $40,500 |
To qualify, you must be equal to or below those in the chart, based on the number of persons living in the dwelling.
Lease Terms
- 12 mo
Fees and Policies
The fees listed below are community-provided and may exclude utilities or add-ons. All payments are made directly to the property and are non-refundable unless otherwise specified.
Required Fees
One-Time Basics
- Due at Application
- Application FeeiCharged per unit.$28.00
Other Fees and Policies
Personal Add-Ons
- Monthly Pet FeeiCharged Per Unit.$35.00/mo
Pet Fees
- Cat
- Pet DepositiCharged Per Unit.$300.00
- Dog
- Pet DepositiMax of 2. Charged Per Pet.$300.00
- Monthly Pet FeeiCharged Per Unit.$35.00/mo
Storage Fees
- Storage Small
- Storage FeeiCharged Per Rentable Item.$30.00/mo
- Storage Medium
- Storage FeeiCharged Per Rentable Item.$40.00/mo
- Storage Large
- Storage FeeiCharged Per Rentable Item.$50.00/mo
Property Fee Disclaimer: Based on community-supplied data and independent market research. Subject to change without notice. May exclude fees for mandatory or optional services and usage-based utilities.
Features and Amenities
On-Site Services
- On Site Retail
- 24 Hour Access
- Key Fob Entry
- Laundry Facilities
Community Features
- Elevator
Outdoor Features
- Roof Terrace
- Courtyard
- Controlled Access
Interior Features
- Tenant Controlled Hvac
- Smoke Detector
- Storage Space
- Security System
- Sprinkler System
- Tub/Shower
- Heating
- Handrails
- Cable Ready
- Air Conditioning
- Wheelchair Accessible (Rooms)
Kitchen Amenities
- Gas Range
- Dishwasher
- Range
- Refrigerator
- Oven
- Disposal
- Freezer
- Kitchen

Map
- Shopping
- Colleges
- Grocery
- Medical

Map
Frequently Asked Questions about Annex Flats
Where is Annex Flats located?
Annex Flats is located at 1603 Walnut St near the Downtown Boulder area of Boulder, CO
What is the current rent range at Annex Flats?
Studio to 1 Bedroom Apartments at Annex Flats currently range from $787 to $1,968
When is the leasing office open?
- The office Hours for Annex Flats are
- Monday 8:30 am–12:00 pm
- Tuesday 8:30 am–12:00 pm
- Wednesday 8:30 am–12:00 pm
- Thursday 8:30 am–12:00 pm
- Friday Closed
- Saturday Closed
- Sunday Closed
Are pets allowed?
Call us today to find out our pet policy and if we allow pets
About Portable Tenant Screening Reports:
Applicant has the right to provide the property manager or owner with a Portable Tenant Screening Report (PTSR) that is not more than 30 days old, as defined in § 38-12-902(2.5), Colorado Revised Statutes; and 2) if Applicant provides the property manager or owner with a PTSR, the property manager or owner is prohibited from: a) charging Applicant a rental application fee; or b) charging Applicant a fee for the property manager or owner to access or use the PTSR.
Nearby Schools
Whittier Elementary School
Boulder High School
About GreatSchools Data on ApartmentHomeLiving.com.
Points of Interest
Time and distance from Annex Flats.
Big Box and Retail
Target
Walgreens
Costco
Colleges and Universities
University of Colorado at Boulder - East Campus
Groceries
Trader Joe's
King Soopers
Hospitals
Shopping Centers
Annex Flats has 5 shopping centers within 0.6 miles.
Nearby Neighborhoods
Rental Price Ranges in the Area
| Bedroom | Average Rent | Cheapest Rent | Highest Rent |
|---|---|---|---|
| Boulder Studio Apartments | $2,011 | $787 | $3,068 |
| Boulder 1 Bedroom Apartments | $2,142 | $843 | $4,205 |
| Boulder 2 Bedroom Apartments | $2,447 | $800 | $5,247 |
| Boulder 3 Bedroom Apartments | $3,119 | $1,305 | $6,891 |
| Boulder 4 Bedroom Apartments | $2,406 | $1,570 | $6,305 |
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