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Annex Flats
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Monthly Rent
Call for Rent
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Bedrooms
1 - 2 bd
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Bathrooms
1 ba
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Square Feet
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Highlights
- New Construction
- Controlled Access
- Elevator
Pricing & Floor Plans
Fees and Policies
Details
Property Information
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Built in 2026
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30 units/4 stories
Annex Flats is an apartment community located in Boulder County and the 80302 ZIP Code. This area is served by the Boulder Valley Re 2 School District attendance zone.
Contact
Community Amenities
- Controlled Access
- 24 Hour Access
- Elevator
Apartment Features
Air Conditioning
Tub/Shower
Heating
Oven
- Air Conditioning
- Heating
- Tub/Shower
- Kitchen
- Oven
- Range
Downtown Boulder is home to some of the most distinctive attractions in the legendary college town. The historic Pearl Street Mall essentially anchors the whole neighborhood, an open-air walking district with an eclectic assortment of art galleries, restaurants, specialty boutiques, coffee shops, and more one-of-a-kind storefront businesses selling everything from bicycles to custom jewelry to high-end mountaineering gear.
The rest of Downtown is equally packed with terrific shopping, dining, entertainment, and nightlife, from the hip Bitter Bar to the classic Boulder Theater. On the banks of Boulder Creek, a series of public parks creates a great environment to spend quality time outdoors. The University of Colorado campus is just a few blocks down the street, injecting the whole area with a healthy dose of collegiate energy.
Learn more about living in Downtown BoulderCompare neighborhood and city base rent averages by bedroom.
| Downtown Boulder | Boulder, CO | |
|---|---|---|
| Studio | $1,374 | $1,643 |
| 1 Bedroom | $1,204 | $1,884 |
| 2 Bedrooms | $1,727 | $2,406 |
| 3 Bedrooms | $3,089 | $3,504 |
- Controlled Access
- 24 Hour Access
- Elevator
- Air Conditioning
- Heating
- Tub/Shower
- Kitchen
- Oven
- Range
| Monday | 8:30am - 12pm |
|---|---|
| Tuesday | 8:30am - 12pm |
| Wednesday | 8:30am - 12pm |
| Thursday | 8:30am - 12pm |
| Friday | Closed |
| Saturday | Closed |
| Sunday | Closed |
| Colleges & Universities | Distance | ||
|---|---|---|---|
| Colleges & Universities | Distance | ||
| Walk: | 11 min | 0.6 mi | |
| Drive: | 4 min | 1.6 mi | |
| Drive: | 7 min | 2.8 mi | |
| Drive: | 9 min | 4.0 mi |
The GreatSchools Rating helps parents compare schools within a state based on a variety of school quality indicators and provides a helpful picture of how effectively each school serves all of its students. Ratings are on a scale of 1 (below average) to 10 (above average) and can include test scores, college readiness, academic progress, advanced courses, equity, discipline and attendance data. We also advise parents to visit schools, consider other information on school performance and programs, and consider family needs as part of the school selection process.
View GreatSchools Rating Methodology
Data provided by GreatSchools.org © 2026. All rights reserved.
Scores provided by
What do Walkability, Transit, Drivability, and Bikeability mean?
Walkability measures the walking distance to day-to-day needs.
Transit measures access to public transportation.
Drivability measures congestion, parking availability, and access to major roads.
Bikeability measures the suitability for cycling.
How It Works
Traffic
-Airport
-Businesses
-Scores provided by
HowLoud What is a Sound Score Rating? A Sound Score Rating aggregates noise caused by vehicle traffic, airplane traffic and local sources. How It WorksAnnex Flats Photos
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Annex Flats
Nearby Apartments
Within 50 Miles of Annex Flats
Annex Flats does not offer in-unit laundry or shared facilities. Please contact the property to learn about nearby laundry options.
Utilities are not included in rent. Residents should plan to set up and pay for all services separately.
Contact this property for parking details.
Annex Flats does not allow pets, though service animals are always welcome in accordance with applicable laws.
Annex Flats is not currently offering any rent specials. Check back soon, as promotions change frequently.
While Annex Flats does not offer Matterport 3D tours, renters can request a tour directly through our online platform.
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.
What Are Walk Score®, Transit Score®, and Bike Score® Ratings?
Walk Score® measures the walkability of any address. Transit Score® measures access to public transit. Bike Score® measures the bikeability of any address.
What is a Sound Score Rating?
A Sound Score Rating aggregates noise caused by vehicle traffic, airplane traffic and local sources.
1603 Walnut St
Boulder, CO 80302
Property Manager Responded