Siena
By Jessica Carcoana · Updated September 2026
Siena is a 92-home KB Home community built in 2016 and 2017 off Wolfensberger Road, with two-story and ranch plans running 1,700 to 2,400 square feet above grade, standard basements, and 2-to-3-car garages on lots of 5,500 to 7,500 square feet. The HOA dues cover trash and recycling pickup. Roxborough State Park is a drive to the northwest for hiking among its red rock formations, and Castle Rock Elementary anchors the neighborhood's school assignment. Wolfensberger Road and Plum Creek Boulevard reach I-25 in about 8 minutes, with downtown Castle Rock a similar distance east.
At a glance
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 (A rating)
- Castle Rock YMCA
- Over 6,000 acres of town open space
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Where it sits
Inside Castle Rock. Approximate area, to be confirmed.
Quick answersQuestions about Siena
Where is Siena?
Siena is in Castle Rock, about 1.7 miles north of the Castle Rock center. The map on this page shows its approximate location.
When was Siena built?
Homes in Siena were built between 2016 and 2017 (new build). Builders on record include KB Home.
Is there an HOA in Siena, and what does it cost?
Siena has a homeowners association. Dues run about $40-$60/mo (estimated); confirm the current figure with the association before you buy.
What amenities does Siena have?
Siena amenities include HOA trash and recycling removal included, proximity to Roxborough State Park, and neighborhood parks.
How big are the lots in Siena?
Typical lots in Siena run 5,500-7,500 sqft.
Which schools are near Siena?
Schools near Siena include Castle Rock Elementary, Mesa Middle School, and Douglas County High School. Verify enrollment eligibility by address.
How high is Siena?
Siena sits at about 6,390 feet above sea level.
Parks and Schools
- Roxborough State Park (nearby)
- Castle Rock Elementary
- Mesa Middle School
- Douglas County High School
Verify school assignment by address with the district. Attendance boundaries do not follow neighborhood lines.
Commute and Access
- 8 minI-25
- Wolfensberger Rd
- Plum Creek Blvd
Transit in Castle Rock: RTD Bus Route 151 (Castle Rock to Lincoln light rail station) · Bustang regional bus (CDOT -- Castle Rock to Denver Union Station) · I-25 express lanes northbound to Denver · No light rail -- nearest station is Lincoln in Lone Tree (15 min drive)
Other Neighborhoods in Castle Rock
- The Woodlands / Escavera$500K-$860K
- Dawson Trails$500K-$800K (anticipated)
- Crystal Valley (New Sections)$500K-$850K
- Castle Pines Village$700K-$5M
- Keene Ranch$1.5M-$3.5M
- Bell Mountain Ranch$1M-$2.5M
- Pradera$1.2M-$4M
- Diamond Ridge Estates$850K-$1.8M (estimated)
- Pinon Soleil$900K-$2.5M (estimated)
- The Meadows$450K-$800K
About This Profile
This profile of Siena was researched in March 2026. It was last reviewed in September 2026. The price range is an estimate built from comparable nearby neighborhoods rather than from direct listings. Amenity coverage is limited because few public sources describe this neighborhood. 92-home KB Home community; minimal online presence beyond listing sites.
Data sourced from direct and indirect online resources. Details are subject to change over time as we continue to research this area.