Siena
By Jessica Car · Updated March 2026
A compact 92-home KB Home community built in 2016-2017 -- two-story and ranch plans with 1,700-2,400 sqft above grade, basements standard, and 2-to-3-car garages on well-sized lots. Quiet and self-contained, with quick access to Roxborough State Park and downtown Castle Rock.
Community Anchors
- Philip S. Miller Park and Challenge Hill (200-step staircase)
- Outlets at Castle Rock
- Historic Downtown Castle Rock (restaurants, shops, Festival Park, First Fridays)
- Castle Rock Recreation Center
- Castlewood Canyon State Park
- Douglas County Fairgrounds and Events Center
- Plum Creek Golf Club (Pete Dye-designed)
- Red Hawk Ridge Golf Course (Jim Engh-designed)
- Castle Rock Adventist Hospital
- Douglas County School District RE-1 (Niche: A)
- Castle Rock YMCA
- Over 6,000 acres of town open space
Nearby Schools
- Castle Rock Elementary
- Mesa Middle School
- Douglas County High School
Considering Siena?
Schedule a call with Jessica to discuss the Castle Rock market and homes in Siena.
Book a Meeting
Price Range
$400K$1.65M
$580K–$750K
More accessible end of Castle Rock
Era Built
2016–2017
19002026
New Build
KB Home