Located in Downtown Boulder at 1603 Walnut St., Annex Flats will be a mixed-use property comprising a ground floor cafe and bakery, 30 units of affordable housing apartments on the 2nd and 3rd floor, and a premier event space on the 4th floor overlooking the Flatirons. Fill out this form to be placed on an interest list. We will be sending out preliminary applications June 2026. Contact us at 303-879-8961 for more information.