Quick answer
At current rates, renting wins over the full 30-year horizon in Boulder. Monthly ownership cost $8,008 (vs $$2,400/mo rent) plus CO's 0.55% property tax make the math tough.
Rent vs Buy · CO
Rent vs Buy in Boulder (2026)
Real math using CO's 0.55% property tax rate, $2,400/year average insurance, and a 6.8% 30-year fixed mortgage. Accounts for opportunity cost — what the down payment would earn invested at 7%.
Last updated: April 23, 2026
Verdict at current rates
Renting wins (30-year horizon)
In Boulder at CO's tax rates and current 6.8% mortgages, keeping the down payment invested at 7% beats homeownership even after 30 years. The standard advice "buy to build equity" doesn't apply here at today's price-to-rent ratio.
Monthly Cost Breakdown
Buying
$8,008/mo
Mortgage P&I
$960,000 loan, 30yr @ 6.8%
$6,258
Property tax
0.55% of assessed (CO avg)
$550
Homeowners insurance
$2,400/yr CO avg
$200
Maintenance
1%/yr of home value
$1,000
Cash at close: ~$270,000 ($20% down + fees)
Renting
$2,400/mo
2BR rent (median)
Boulder market rate
$2,400
Renters insurance
~$15/mo typical
$15
Down payment invested
$240,000 growing at 7%/yr
(opportunity cost)
Monthly gap: $5,608 cheaper than buying. Renter invests that difference.
Year-by-Year Net Position
"Buy wins by" = what you'd clear selling the home minus what the renter has in investments. Positive = buy ahead.
| Year | Home value | Buyer equity (net) | Renter portfolio (net) | Buy wins by |
|---|---|---|---|---|
| Year 5 | $1,391,129 | $-322,749 | +$568,161 | $-890,910 |
| Year 10 | $1,612,700 | $-455,585 | +$1,058,066 | $-1,513,651 |
| Year 15 | $1,869,561 | $-509,787 | +$1,779,546 | $-2,289,332 |
| Year 30 | $2,912,715 | +$145,815 | +$6,539,869 | $-6,394,054 |
Assumptions
Every rent-vs-buy calculator depends on the assumptions. Here are ours — all transparent, none cherry-picked to bias the answer.
This is a rule-of-thumb calculator. Real decisions involve your specific tax bracket, any HOA, mortgage points, closing-cost negotiations, and exact loan terms.
Frequently Asked Questions
Is it better to rent or buy in Boulder?
In Boulder at current mortgage rates (6.8%), renting and investing the down payment beats buying for the full 30-year horizon. Median monthly ownership costs ($8,008) well exceed median 2BR rent ($2,400), and CO's 0.55% property tax makes the math especially tough.
What's the monthly cost of owning a home in Boulder?
On a median $1200K home with 20% down at 6.8% fixed rate: mortgage P&I $6,258, property tax $550 (0.55% of assessed value), homeowners insurance $200 (CO average $2,400/year), and maintenance $1,000 (1% of home value/year). Total: $8,008/month.
How much down payment do I need to buy in Boulder?
20% down on a median Boulder home ($1200K) is $240,000. Plus closing costs of roughly 2.5% ($30,000). Total cash-to-close: about $270,000. FHA loans allow 3.5% down ($42,000) but require mortgage insurance that adds ~$468/month.
What's the 10-year cost of renting vs buying in Boulder?
Over 10 years in Boulder: renters pay $330,160 in cumulative rent but have $1,388,225 invested (assuming 7% return on the $240,000 down payment + monthly savings). Buyers have paid $1,151,641 in total ownership costs and hold $792,818 in home equity. Net: renting is ahead by $1,513,651 at year 10.