Flatirons

Flatirons House sits on a cherished family lot in Boulder’s Chautauqua neighborhood, where the owner grew up and now returns seasonally from the East Coast. Designed as a compact Passive House, it features single-floor living with a basement for visiting family. A simple, modern form with a single-pitch roof captures iconic Flatirons views and winter sun. Nestled in a lush garden originally cultivated by the owner's mother, the home is both a retreat and a quiet tribute to family legacy.

Completion

3,240 sf

PHIUS

Boulder, CO

2026

coming soon ach50

Type

Location

Living Space

Others

Plumbing

Electric

Performance Consultant

Architect

NS Electric

HVAC Engineer: Dake Collaborative
Electrical Engineer: D.Keller Engineering
Concrete: Earthen Design
Drywall: Fossil Creek
Excavation: Earthen Design
Roofing: Boulder Roofing

Structural Engineer

Size

Overview

Single Family Certified Passive House

3,240

Enersign

R-60

Slab

Envelope R Value

R-36

Wall 

R-30

Floors

Windows