Estimate anchored to the current list price ($2,399,000) and informed by historical sale history, large lot premium (~1 acre abutting open space), finished basement and high-end features (safe room, theater, 4-car heated garage). No live comparable-sales pull — range reflects +/- ~8% market buffer for luxury Longmont properties as of 2026-03-14.
Contemporary 6-Bedroom Home on 1 Acre with Theater & Safe Room
8712 Portico Lane is a rare Longmont offering: an expansive, well-built contemporary home on a full acre that combines family-scale living, serious entertaining space and exceptional preparedness features. The light, open main rooms (with ~10-foot ceilings) flow from formal to casual areas — a welcoming family room and formal dining that easily accommodate large gatherings. The kitchen supports heavy use: gas cooking, double ovens and abundant cabinets — practical and serviceable for holiday entertaining and everyday life. French doors and wide wood floors throughout the principal living spaces add warmth and refinement.
Downstairs, the lower level is deliberately finished as a destination. With over 2,000 square feet of basement space you’ll find a theater-style room primed for game nights and movie marathons, a mini kitchen for independent entertaining, and generous storage/utility spaces that keep the main living area tidy. The basement layout provides options for in-law suites, a rec area, or a work-from-home arrangement that still affords privacy to the upstairs bedrooms.
Safety and utility are signature features here. The property includes an independent safe room constructed with ballistic paneling and secured by two steel access doors — a distinctive amenity rarely found in the market. The oversized attached four-car garage is heated and cooled, delivering a functional workshop environment as well as secure vehicle storage. Mechanical systems include central air and multi-source forced-air heating with humidity control so the home performs well in Colorado’s seasonal extremes.
Outside, the property reads like a private compound. The one-acre lot abuts private open space and shared walking paths, creating a park-like setting and a sense of separation from neighboring homes. Whether you’re gardening, enjoying morning runs along the paths, or hosting large outdoor gatherings, the scale and layout support a broad range of lifestyles. Located in north Longmont with straightforward access to Boulder and Denver, this residence is an attractive option for buyers seeking space, security and a turn-key luxury home in a friendly community.
A 2007 contemporary on 1 acres.
Building
Site & utilities
North Longmont / Portico area (shared-path community)
Researched nearby locations
Location
8712 Portico Ln, Longmont, CO 80503
North Longmont neighborhoods typically combine suburban convenience with ready access to trails and open space. This pocket emphasizes family-oriented streets, shared walking paths and community common areas. Commuting to Boulder or Denver is practical, and Longmont’s growing dining and retail corridors are within easy reach. The area attracts buyers who want outdoor access without sacrificing proximity to regional employment centers.
Direct access to shared walking paths and abutting private open space; easy driving access to regional parks and mountain recreation areas for hiking and skiing day trips.
A factual market snapshot around Portico Ln.
This property sits at the upscale edge of the Longmont single-family market. Longmont continues to see steady demand driven by spillover from Boulder and the Denver metro employment base; inventory in early 2026 remains relatively tight for move-in-ready homes but deeper for the above-$2M segment. Median single-family sale prices across Longmont are well below this listing, reflecting the large-lot and finished-basement premium being offered. Expect a careful marketing process: well-qualified buyers active in the Boulder-Longmont-Denver trade area will value acreage, finished amenity spaces and the unique safe-room feature. Appraisals at this price point will pay close attention to like-for-like comps (acreage, basement finish and garage/workshop utility), so preparing a comp package and pre-listing inspections will help reduce friction and accelerate buyer confidence.
Likely single-family residential zoning (R-1 / County single-family equivalent). Property notes indicate 'Unincorporated' status; confirm with county planning.
Zoning
Research-indicated uses
- Single Family Residence
- Accessory Structures (Subject To Setbacks And County Rules)
- Home Occupations (Limited)
Assessment data and recorded transactions.
Assessed value is kept visually separate from the CompCasa market-value estimate.
Sale history
What the research supports — and what is still worth verifying.
Key findings
- 6 bedrooms, 4.5 bathrooms, 6,283 total SF on approximately 1 acre (43,560 SF).
- Current list price: $2,399,000 (price per SF ≈ $382).
- Finished basement and safety features significantly increase market differentiation and replacement cost basis.
- Property listed multiple times with price adjustments between 2025–2026; prior public sale in 2019 at $1,360,000.
- Located in St. Vrain Valley School District; subject to county/unincorporated zoning rules.
What stands out about this property.
Interior Features
- 6 bedrooms, 4.5 bathrooms across 6,283 SF
- Finished basement (~2,000+ SF) with theater-style room
- Mini kitchen in basement for independent entertaining
- 10-foot ceilings and expansive principal rooms
- Wood floors, French doors, double ovens, gas range
- Central air and forced-air heating with humidity control
Exterior & Lot
- Approximately 1.0-acre lot (43,560 SF) abutting private open space
- Shared walking paths and community common areas
- Paved access and long driveway parking
- Oversized attached 4-car garage (heated & cooled) with garage door opener
Location & Neighborhood
- North Longmont area with a community-oriented feel
- Short drive to shopping and services in Longmont; commutable to Boulder/Denver
- Property listed as in an unincorporated area of Boulder County — verify specifics with county
Walkability & Recreation
- Walkability Rating: 62/100
- Easy access to local trails, open space and regional parks
- Close enough for weekend trips to mountains and St. Vrain-area recreation
Sources & research confidence.
See where the property research came from and how confidence varies by field.