Price Range
$100,000
$200,000
$300,000
$400,000
$500,000
$600,000
$700,000
$800,000
$900,000
$1,000,000
$1,250,000
$1,500,000
$1,750,000
$2,000,000
$2,500,000
$3,000,000
$3,500,000
$4,000,000
$4,500,000
$5,000,000
$6,000,000
$7,000,000
$8,000,000
$9,000,000
$10,000,000
$12,000,000
$12,300,000
$12,600,000
$12,900,000
$13,000,000
$100,000
$200,000
$300,000
$400,000
$500,000
$600,000
$700,000
$800,000
$900,000
$1,000,000
$1,250,000
$1,500,000
$1,750,000
$2,000,000
$2,500,000
$3,000,000
$3,500,000
$4,000,000
$4,500,000
$5,000,000
$6,000,000
$7,000,000
$8,000,000
$9,000,000
$10,000,000
$12,000,000
$12,300,000
$12,600,000
$12,900,000
$13,000,000
Bedrooms
Bathrooms
Listings
Market Stats
Information

Castle Rock Homes with a Finished Basement for Sale

Home
Castle Rock Homes With A Finished Basement For Sale

Homes with Finished Basement for sale in Castle Rock, Colorado, updated daily from the MLS. Every listing below matches this search in Castle Rock; scroll past the homes for what they cost, what to check before you write an offer, and the same search in every other Colorado city.

Call or text 303-955-4220. A live person answers.

261 Properties Found
Sort By:

Castle Rock Finished Basement Home Market Statistics

261
Homes Listed
87
Avg. Days on Site
$289
Avg. $ / Sq.Ft.
$1,373,460
Med. List Price

Homes with a Finished Basement for Sale in Castle Rock, CO: What You Are Looking At

The homes with a finished basement for sale in Castle Rock above are every MLS listing with finished square footage below grade: basement family rooms, basement bedrooms and baths, home theaters, gyms, and full basement suites with a second kitchen. Buyers searching Castle Rock finished basement homes also search homes with a basement bedroom, basement apartment, mother-in-law suite, homes with a home theater and homes with a basement bar, and this page carries all of them. As of September 28, 2026 this page shows 259 homes with a finished basement for sale in Castle Rock, and the count updates the moment a home lists or closes.

The Kenna Real Estate Group has sold Castle Rock homes since 2002 and asks for the basement permit on every one. Call or text 303-955-4220. A live person answers.

Finished Basements in Castle Rock: Permit, Egress and Value

  • Permitted or not. A permitted finish was inspected for electrical, plumbing, egress and fire. An unpermitted finish is common in Castle Rock and it is where buyers find the surprises. We pull the permit history.
  • Egress makes a bedroom. A basement bedroom without an egress window is a "non-conforming" bedroom and cannot be counted or safely slept in. The window costs $3,000 to $6,000 to add.
  • Radon. Colorado soil puts radon in most basements. A test runs $150 and mitigation $1,000 to $2,000; both are standard in a Castle Rock contract.
  • Water and the sump. Finished walls hide the foundation. We look at the sump pump, the window wells, the carpet edges and the smell.
  • Appraised value. Below-grade square footage appraises at less per foot than the main floor, which is why a finished basement is the best-value space in Castle Rock.

How to Buy a Home with a Finished Basement in Castle Rock

  1. Tell us what the basement is for: bedrooms, a theater, a gym, a suite or a rental. It sets what "finished" has to include in Castle Rock.
  2. Get pre-approved so your offer in Castle Rock carries weight the day you find the right home.
  3. Tour with a Kenna agent, 7 days a week. We show you the home, the block and the closed comps.
  4. Write with inspection, appraisal and loan deadlines that protect you, and negotiate what the inspection finds.
  5. Close. Most Castle Rock closings run 30 to 45 days.

Selling in Castle Rock?

A finished basement with the permit and a radon test on the counter sells for more in Castle Rock than the same space with questions around it. A free Smart Pricing Report from the Kenna Real Estate Group prices your home against the closed sales that match it. Call or text 303-955-4220.

Homes with a Finished Basement Near Castle Rock

Castle Rock Questions

How much does a finished basement add in Castle Rock?

$30,000 to $80,000 on the same floor plan depending on the finish, the bedroom count and the permit. A suite with a kitchen adds more.

What does it cost to finish a basement?

$40 to $80 a square foot in Castle Rock for a standard finish, more with a bathroom, a wet bar or an egress window.

Is an unpermitted basement a deal breaker?

No, but it is a negotiation. We price the risk, ask for the work to be inspected and write the offer accordingly.

Can I see a Castle Rock finished basement home today?

Yes. Call or text 303-955-4220 and a Kenna agent meets you there, 7 days a week.

More for Castle Rock Buyers

Kenna Real Estate Group at Keller Williams DTC · 6300 S Syracuse Way, Suite 150, Centennial · Call or text 303-955-4220. A live person answers, 7 days a week.

Homes with Finished Basement for sale across Colorado

More searches in Castle Rock

Guides for this market

Want a tour or a price opinion on any home above? Call or text 303-955-4220. A live person answers. Not a robot, not a phone tree.
@ Copyright 2026, AgentLoft.com - Powered by AgentLoft
Listings SitemapPrivacy Policy