Mortgage Calculator & Closing Costs: Castle Rock, CO
Mortgage payment estimates, closing cost breakdowns, and homebuying data for Castle Rock, Colorado.
Median Home Price
$545K
Population
73K
Avg Monthly Rent
$1,750
Property Tax Rate
0.51% *
* Property tax shown is the Colorado state average effective rate. Actual rates vary by county, city, and school district — check with your local assessor for exact rates in Castle Rock.
Castle Rock vs Colorado Median
The median home price in Castle Rock is $545,000, which is roughly in line with the Colorado state median of $520,000.
Mortgage Calculator — Castle Rock, CO
Pre-filled with Castle Rock median home price and Colorado tax/insurance rates. Adjust for your property.
Three down payment scenarios for a $545K home using Colorado's 0.51% tax rate and $3,200/yr insurance.
5% Down
$4,073/mo
Down: $27,250
Loan: $518K
P&I: $3,273
Tax: $232
Insurance: $267
PMI: $302
10% Down
$3,885/mo
Down: $54,500
Loan: $491K
P&I: $3,100
Tax: $232
Insurance: $267
PMI: $286
20% Down (No PMI)
$3,254/mo
Down: $109,000
Loan: $436K
P&I: $2,756
Tax: $232
Insurance: $267
Income needed (28% rule): $139K/year with 20% down, $167K/year with 10% down.
Rent vs Buy in Castle Rock
Rent
$1,750/mo
vs
Buy (10% down)
$3,885/mo
Price-to-rent ratio: 26.0 — At a ratio above 20, renting may be more economical in Castle Rock for shorter stays. Buying costs $2,135 more per month than renting, and it typically takes 5-7 years to break even on the transaction costs of buying.
The median home price in Castle Rock is $545,000, roughly in line with the Colorado state median of $520,000. With a population of 73,158, Castle Rock is a smaller market where home prices reflect strong demand and local economic factors.
Property taxes in Colorado average 0.51% annually. This low property tax rate is a significant advantage for Castle Rock buyers, keeping your monthly costs well below what you'd pay in higher-tax states. Homeowners insurance in Colorado runs approximately $3,200 per year. Insurance costs are notably high — factor this into your monthly budget.
Average rent in Castle Rock is $1,750/month. With a price-to-rent ratio above 20, renting could be more economical in the short term — use our Rent vs Buy calculator to model your specific timeline.
Castle Rock is a higher-cost market. At $545K median, buyers need significant savings or strong income. Down payment assistance through Colorado's CHFA Down Payment Assistance program becomes especially important.
Run a Rent vs Buy analysis
Compare total costs of renting vs buying in Castle Rock.