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Monthly Rent
$787 - $1,968
Plus Fees12 Month Lease
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Bedrooms
Studio - 1 bd
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Bathrooms
1 ba
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Square Feet
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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.
Highlights
- New Construction
- Roof Terrace
- Controlled Access
- On-Site Retail
- Elevator
Pricing & Floor Plans
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.
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One-Time Basics
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Due at Application
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Application FeeCharged per unit.$28
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Due at Application
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Dogs
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Pet DepositMax of 2. Charged per pet.$300
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Monthly Pet FeeCharged per unit.$35 / mo
30 lbs. Weight Limit, Pet interview, Spayed/Neutered -
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Cats
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Pet DepositCharged per unit.$300
0 lbs. Weight Limit, Pet interview, Spayed/Neutered -
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Storage - Small
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Storage FeeCharged per rentable item.$30 / mo
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Storage - Medium
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Storage FeeCharged per rentable item.$40 / mo
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Storage - Large
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Storage FeeCharged per rentable item.$50 / mo
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Monthly Pet FeeCharged per unit.$35 / 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.
Details
Lease Options
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12 mo
Property Information
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Built in 2026
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30 units/4 stories
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 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.
Community Amenities
Laundry Facilities
Elevator
Roof Terrace
Controlled Access
- Laundry Facilities
- Controlled Access
- 24 Hour Access
- On-Site Retail
- Key Fob Entry
- Elevator
- Roof Terrace
- Courtyard
Apartment Features
Air Conditioning
Dishwasher
Refrigerator
Tub/Shower
- Air Conditioning
- Heating
- Cable Ready
- Security System
- Storage Space
- Tub/Shower
- Handrails
- Sprinkler System
- Wheelchair Accessible (Rooms)
- Dishwasher
- Disposal
- Kitchen
- Oven
- Range
- Refrigerator
- Freezer
- Gas Range
Income Restrictions
How To Qualify
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 | $1,375 | $1,633 |
| 1 Bedroom | $1,207 | $1,887 |
| 2 Bedrooms | $1,735 | $2,405 |
| 3 Bedrooms | $3,104 | $3,513 |
- Laundry Facilities
- Controlled Access
- 24 Hour Access
- On-Site Retail
- Key Fob Entry
- Elevator
- Roof Terrace
- Courtyard
- Air Conditioning
- Heating
- Cable Ready
- Security System
- Storage Space
- Tub/Shower
- Handrails
- Sprinkler System
- Wheelchair Accessible (Rooms)
- Dishwasher
- Disposal
- Kitchen
- Oven
- Range
- Refrigerator
- Freezer
- Gas 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
BusyAirport
CalmBusinesses
ActiveScores 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
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Models
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While Annex Flats does not provide in‑unit laundry, on‑site laundry facilities are available for shared resident use.
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 has studios to one-bedroom with rent ranges from $787/mo. to $1,968/mo.
Yes, Annex Flats welcomes pets. Breed restrictions, weight limits, and additional fees may apply. View this property's pet policy.
A good rule of thumb is to spend no more than 30% of your gross income on rent. Based on the lowest available rent of $787 for a studio, you would need to earn about $31,480 per year to qualify. Want to double-check your budget? Calculate how much rent you can afford with our Rent Affordability Calculator.
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.
1603 Walnut St
Boulder, CO 80302
Property Manager Responded