ME-KWA-MOOKS NET-ZERO

Located on a steeply sloped triangular lot in West Seattle adjacent to Me-Kwa-Mooks Park, this transformative Japanese inspired remodel was designed to improved access to the home, connect to views of the greenbelt and frame territorial views over Puget Sound, all while improving interior flow. This house is also on track to achieve net-zero energy efficiency.

  • The existing house suffered from three ill-conceived additions and remodels. The design opportunities and issues were plenty. The house was difficult if not dangerous to access via the driveway which was steep and lacked turnaround space. This prompted visitors to climb a street-side circular stair to arrive at either a questionable entry door or continue up another flight of stairs. Once inside, the spaces were fragmented and did not take sufficient advantage of their surroundings views or adjacencies.  

    The clients were adventurous and willing to explore design solutions rooted in their experiences. Having lived in Japan they enjoyed both traditional and contemporary design elements, from the concept of the tea room to Studio Ghibli to contemporary Japanese architecture. They sought a balance of old and new, crafted and minimal. Both had been professional circus performers, bearing an affinity for open, dynamic spaces. What the clients desired was not more space, but better designed space–to live in rooms engaged with one another and to the outdoors.  

    The solution was informed by designing around the central hearth and by reducing the jumbled exterior form of the house into two integrally linked volumes. The exterior relationship was carried into the interior, so the form is present both outside and inside the home. The result is a clearly legible exterior while on the inside the space is very dynamic, with volumes linked together through views and circulation.

PERFORMANCE UPGRADES

High performance envelope with ACH of 1.2

Exterior insulation

High Performance windows, GLO Triple Pane Passive House

High efficiency HVAC

Solar panels

Dual electric car chargers

CURRENT HOUSE PERFORMANCE W/ UPGRADES

Total Project Energy Use Index (Total EUI) = 10.3 kBTU/sf-yr

Grid Project Energy Use Index  (Total EUI) = 3.9 kBTU/sf-yr (this excludes energy offset by PV)

MECHANICAL

Heating cooling – High Efficiency Epoxy Coated 3 Ton Mitsubishi Electric Heat Pump 

Heat Recovery Ventilator (HRV) – Life Breath 205Max 

High Efficient Water Heater – Rheem Professional Prestige Hybrid Electric Heat Pump 

Low flow plumbing fixtures 1.75 – 1 GPM or less

SOLAR

System Size – 10.95kw

Power Offset – 71.6%

Approximate Cash Positive = 12.2 years (based off typical house and their usage)

(2) Tesla Car Chargers

ENVELOPE

Blower door test – ACH @ 50 Pa  = 1.23

Windows/Doors – Average Weighted U-Value = .19 

Exterior Wall R-Value = R24+continuous R8 (TOTAL = R32)

Roof R-Value = R65

Floor R-Value = R53++continuous R8 (TOTAL = R61)

PROJECT INFO

Location | Seattle, WA

Project Architect | Aaron Trampush

Architect of Record | SHED Architecture & Design

Contractor | Dowbuilt

Structural Engineer | Todd Perbix

Metal Siding | VSM Sheet Metal

Cabinets | Whidbey Design Works

Concrete | Bayshore Concrete

Interior Steel | Alpine Welding

Solar | Artisan Electric

Enclosure Consultant | RDH Building Science

Windows and Doors | Washington Window and Doors

Photography | Rafael Soldi, Tony Kim (aerial)

Previous
Previous

BLACK PINE HOUSE

Next
Next

ALPENTAL A_FRAME