Khotso Passive House

Project Description

2800 SF Single family + secondary suite home. Three stories plus roof penthouse with access to the green roof. All within Passive House Envelope

Our clients and project team know that Passive House is a smarter way to build. The owners were motivated to pursue the aggressively high-performance standard of Passive House to advocate by doing. They wanted to play a role in pushing sustainable market transformation in Vancouver’s construction industry. Khotso exemplifies the design principles of a super-high-efficiency, and exceedingly comfortable, passive home. The entirety to the 2800 SF single family home with the secondary suite is within the Passive House envelope, including the basement. Learn more about Passive House, and why it is important on our blog: http://www.oneseed.ca/index.php/blog/

The design for this house in the Riley Park Neighbourhood of Vancouver did not just need to meet the exacting standards of Passive House but wanted to be beautiful, modern, functional, and elegantly simple. Modernist flat-roofed boxes are terraced to capitalize on the southern exposure of the back yard. A mono-chromatic exterior colour palette plays with the textural differences between the corrugated steel siding and large format fibre-cement panels. The entrance is punctuated by a colourful folded steel plate canopy.

The strong architectural form of the stair tower lends the home a distinct and modern street presence, inspired by that of a lighthouse or beacon. It plays a critical role in the passive functioning of the house, a role which varies by season. It provides south facing glass for solar heat collection, open riser stairs for natural light diffusion and air movement, a powerful stack effect for passive cooling with tilt and turn doors at top and bottom, and of course, access to the intensive green roof. Not coincidentally, a beacon is symbolic of a guiding signal and suggests light and the sharing of knowledge.

A space-savvy floor plan allows the house to flex and grow with the multi-generational family. The separate 2-bedroom secondary suite at the garden level was designed for the home owner’s parents. It is placed low on the ground, however, you would never know this due to large windows on the front, which open onto a private sunken garden, and the floor-to-ceiling glass wall at the back, complete with a walk-out patio and sloped garden. One or two bedrooms from the suite can be dedicated to the house, by way of carefully placed doors, should they desire an additional bedroom, media room, study or otherwise, while allowing the suite to continue to operate as a one bedroom, or even bachelor studio, space. An intensive green roof and rooftop patio area provide private outdoor space with amazing views and solar access. A small study at the top of the stairs opens out onto the green roof while capturing north views to the mountains and City.

Architect: One SEED Architecture + Interiors
Energy Modeler: Andre Harrmann – Harrmann Consulting
Builder: Erik Olofsson Construction Inc.
Structural Engineer: Jeff Allester Engineering
Geotechnical: Davies Geotechnical