Residential Comparable Sales Lookup Tool
Use the Residential Comparable Sales Lookup Tool (Residential Only)
- View the Lookup Tool instructional video (20 minute extended version)
- View the Lookup Tool instructional video (7 minute version)
- View the Lookup Tool training document with step-by-step instructions
- For questions during office hours, you can reach the main office at 303-441-3530. Or email us any time at assessor@bouldercounty.gov.
Base Period Sales from July 1, 2020–June 30, 2022
In areas with few sales, the Assessor is allowed to use comparable sales going back up to five years.
Residential Comparable Properties Lists
Apartment Buildings
| Apartment Buildings | XLSX |
Market Area Maps for Single Family Properties
Comparable properties are often found in the same Market Area, which are groups of neighborhoods that have similar trends in the market. Boulder County uses these areas to establish market value for mass appraisal purposes.
- 2023 Market Area Viewer
- Countywide Map
- Boulder & Gunbarrel Map
- Longmont & Niwot Map
- Erie, Lafayette, Louisville, & Superior Map
Townhomes
| Residential Townhomes | ||
|---|---|---|
| Market Area 108 – Boulder, East of Broadway and All Other Townhomes | XLSX | |
| Market Area 109 – Boulder, West of Broadway and Downtown Townhomes | XLSX | |
| Market Area 407 – Erie, Gunbarrel, Lafayette, Louisville, Niwot, & Superior Townhomes | XLSX | |
| Market Area 506 – Longmont Townhomes | XLSX | |
Condominiums
| Residential Condominiums | ||
|---|---|---|
| Market Area 630 – Boulder Condos | XLSX | |
| Market Area 632 – Erie, Gunbarrel, Lafayette, Louisville, Niwot, & Superior Condos | XLSX | |
| Market Area 633 – Longmont Condos | XLSX | |
| Market Area 634 – Mountain Condos | XLSX | |
Manufactured Housing
Manufactured homes are also referred to as Mobile Homes. See a more detailed definition.
| Manufactured Housing | XLSX |
