1st Advantage MortgageBoulder, CO DSCR loans work like they do elsewhere: the lender divides the property's rent by its full monthly payment. The local inputs are a median gross rent of $2,018, median real estate taxes of $5,322 and a renter share of 53%.
Boulder rents, values and tenants
Citywide, Boulder renters pay a median $2,018 in gross rent (rent plus utilities), about 15% above the Colorado median of $1,761, and owner-occupied homes have a median value of $1,039,500, well above the Colorado median of $539,400. The gross rent-to-value ratio for Boulder works out to 2.3% (twelve months of median rent divided by median value), on the low side, so the payment, not the rent, usually decides whether a file clears. The figure combines all rental types with all owner-occupied homes, so it is a screening number and not an appraisal.
| Indicator | Colorado | Boulder | Difference |
|---|---|---|---|
| Tax as a share of home value | 0.48% | 0.51% | +6% |
| Annual property tax bill, median | $2,602 | $5,322 | +105% |
| Household income, median | $95,470 | $87,493 | -8% |
| Typical owner-occupied value | $539,400 | $1,039,500 | +93% |
| Persons per household | 2.42 | 2.12 | |
| Share in 2-4 unit buildings | 4.7% | 8.5% | +82% |
| Long commuters, 45 min plus | 14.1% | 7.8% | -44% |
| Degree holders, age 25+ | 45.7% | 76.8% | +68% |
| Workers on their own account | 11.3% | 12.8% | +13% |
| Renters paying 30%+ of income | 52.9% | 66.1% | +25% |
| Units sitting vacant | 8.3% | 6.4% | -23% |
| Typical construction year | 1988 | 1977 | |
| Annual rent divided by value | 3.9% | 2.3% | -41% |
| Households that rent | 33.8% | 52.8% | +56% |
| Residents (Census estimate) | 5,862,189 | 106,433 |
A renter-heavy city, Boulder has 52.8% of households renting (well above the Colorado median of 34%), which is good for demand and a reminder to check rent comparables carefully. Household income runs a median $87,493 (about 8% below the Colorado median of $95,470), while 66% of renters spend 30 percent or more of income on housing.
Housing mix and age in Boulder
Buildings with two or more units make up about 52% of Boulder's housing, including 9% in two to four unit buildings and 17% in buildings of five to 19 units. The median home was built in 1977, a middle-aged stock where roofs, HVAC and water heaters are the main repair items.
Use vacancy as a reality check: 6% of all units are vacant in Boulder, and the rental vacancy rate is 4.4%.
Reading Boulder as an investor
Boulder's 2.3% rent-to-value ratio is on the lean side, so expect lenders to ask for more cash down on a typical single-family purchase and to scrutinize insurance and tax estimates closely. Mid-aged stock (median built 1977) means many roofs and HVAC units are near the end of their lives, so ask for installation dates. Renter-heavy markets like Boulder favor investors with a clear tenant profile, whether workers, students or families.
The payment side of the Boulder ratio
Real estate taxes are a line the rent has to cover. The median owner in Boulder pays $5,322 a year (well above the Colorado median of $2,602), which is about 0.51% of the median home value. Measured against a year of median rent, taxes eat about 22% before any other cost shows up.
County-level hazard data from FEMA (National Risk Index 1.20) shows Boulder County with relatively moderate overall risk and lightning (very high), hail (relatively high) and wildfire (relatively high) at the top of the list.
| Hazard in Boulder County, FEMA index | Level |
|---|---|
| Winter weather exposure | Relatively High |
| Wildfire exposure | Relatively High |
| Hail exposure | Relatively High |
| Lightning exposure | Very High |
| Social vulnerability score | Very Low |
| Annualized loss estimate | Relatively Moderate |
| Composite risk | Relatively Moderate |
Price the insurance before you price the offer: a landlord quote for the Boulder property, plus flood cover where the map requires it, goes into the payment your rent is divided against.
Working the Boulder rent math
For a rough fit test, treat $2,018 as the rent and $444 as the monthly tax. The payment cannot exceed $2,018 at a 1.00 ratio, so $1,574 is left after taxes for interest, principal, insurance and any association dues, shrinking to $1,171 if the lender wants 1.25.
What CO law and Boulder require of landlords
This page does not claim to list every Boulder rental ordinance. Before you buy, call the city's planning or code office and Boulder County to ask about rental registration, inspections and short-term rental permits, and read any association declaration. For Boulder short-term hosts, one state-level point stands out. Colorado requires a sales tax license for an owner who rents rooms or accommodations, with tax generally due on stays under 30 consecutive days, and a marketplace that collects for the owner typically covers state, local and lodging taxes, while county or city lodging filings can be separate.
A landlord collecting a deposit in Boulder works under C.R.S. §§ 38-12-102.5, 38-12-103 (as amended by HB25-1249, eff. Jan 1, 2026), which sets the limit as follows: 2 months' rent (since Aug 7, 2023). Plan for a 30 day return window on any Boulder deposit once the tenant moves out. Rent increases in Colorado: No; counties and municipalities are prohibited from enacting rent control (C.R.S. 38-12-301).
Neighbors of Boulder by the numbers
Set Boulder ($1,039,500 median value) beside its neighbors: Thornton comes in lowest at $517,500, and Arvada tops the group at $632,600.
| Market | Renter share | Tax bill | Home value | Residents | Rent |
|---|---|---|---|---|---|
| Thornton | 29% | $2,911 | $517,500 | 144,187 | $1,895 |
| Arvada | 25% | $3,223 | $632,600 | 122,634 | $1,888 |
| Westminster | 38% | $2,614 | $532,400 | 115,484 | $1,882 |
| Longmont | 38% | $2,940 | $572,800 | 99,406 | $1,816 |
| Boulder | 53% | $5,322 | $1,039,500 | 106,433 | $2,018 |
Who rents in Boulder
12.8% of employed residents work for themselves, which matters here because DSCR lending does not ask for tax returns or pay stubs. Other workforce markers: government workers are about 16% of employment, 77% of adults hold a bachelor's degree or higher and 8% of commuters travel 45 minutes or more.
For a sense of who employs Boulder renters, the published employer list for 2022 shows University of Colorado Boulder, Ball Corporation, Boulder Valley School District, St. Vrain Valley School District and Boulder Community Health. Check the current year before you lean on it, since payrolls move. Higher education in and around Boulder includes University of Colorado Boulder and Naropa University, which feeds demand for student, staff and faculty housing near campus. Transportation links include air service through Denver International Airport and Boulder Municipal Airport. Easy highway and air access helps both tenant commutes and remote ownership.
Putting a Boulder file together
Gather the lease or rent estimate, the tax estimate and an insurance quote for the Boulder address, check them in the calculator, and begin your application or get a quote first.
More Colorado markets
- All Colorado DSCR loans
- DSCR loans in Longmont, CO
- DSCR loans in Westminster, CO
- DSCR loans in Arvada, CO
- DSCR loans in Thornton, CO
- Every market we cover
References
- FEMA National Risk Index
- Encyclopedia entry for Boulder
- Colorado security deposit statute (C.R.S. §§ 38-12-102.5, 38-12-103 (as amended by HB25-1249, eff. Jan 1, 2026))
- Colorado Department of Revenue, rooms and accommodations (Colorado)
- Census Bureau ACS 5-year 2020 to 2024 tables
Census figures are 2020 to 2024 ACS five-year estimates for Boulder and carry margins of error. RedFlagLease (CC BY 4.0) supplies the Colorado landlord-tenant notes, and the statutes are linked. Verified October 2026. Ordinances and statutes change, so confirm before acting.
DSCR loan availability varies by property and lender program and is not an offer to lend. See our disclosures.
Frequently asked questions
How is Boulder rent documented for a DSCR loan?
Underwriters take the lease if one exists and compare it with the appraisal's rent estimate; the lower figure often governs. Boulder median rent is $2,018.
How is the DSCR figure built for a Boulder property?
Every piece of PITIA is in the denominator. With $2,018 in rent, a 1.25 lender allows about $1,614, leaving $1,171 after median taxes of $444 a month.
How high are property taxes in Boulder?
The Census reports a median of $5,322 a year for Boulder owners, about 0.51% of median value against 0.48% for Colorado. The county reassesses after a sale, so ask the tax office for an estimate on your purchase price.
Can I use Airbnb income to qualify in Boulder?
Depending on the lender, yes, if the property may legally be used that way and income is documented. Confirm the local permit, association rules and Colorado lodging taxes before you underwrite nightly income in Boulder.
When must a Boulder landlord return a deposit?
Limit: 2 months' rent (since Aug 7, 2023). Return: 30 days. Statute: C.R.S. §§ 38-12-102.5, 38-12-103 (as amended by HB25-1249, eff. Jan 1, 2026). Confirm current text before you rely on it.
Is flood or storm risk a concern for a Boulder rental?
The county scores relatively moderate overall in FEMA's index, with lightning leading. Parcel-level flood maps and a real insurance quote give the answer that counts.
Is an entity required for a CO DSCR loan?
An individual can borrow too. If you prefer an entity for the Boulder purchase, expect to provide formation documents and sign a personal guaranty.