TC Legend Design - TC Legend Homes

Tree-View House

by Senna | Jul 12, 2022

Sitting nestled in the trees with beautiful green views out of every window, this house really lives up to its name—Tree-View House. Both clients and designer Jake did a superb job ensuring the color of the forest framed the main living spaces through the thoughtfully placed windows and use of neutral-colored finishes, making you really feel at one with the surrounding ecosystem.

As a family of 5 with a need for both play and work, Tree-View was designed separating the children’s space from the parent’s space with 3 bedrooms and a wet bar on the lower floor and a master suite plus office on the main living floor. The lower floor suite and wet bar were also designed with dual purpose, as they can be turned into a mother-in-law suite in the future. The front entrance also features a large wooden deck at street level, allowing the main floor to be aging-in-place accessible. Additionally, the deck is a great way for the family to engage with the community and can double as a play area along with the spacious driveway. In total, the house is 2,116 square feet with 4 bedrooms and 3.5 bathrooms.

Tree-View is built using our tried-and-true envelope and mechanical systems: 6.5” structural insulated panels (SIPs) walls, 10.25” SIPs roof, 4” R20 foam under the slab, R24 insulated concrete forms (ICF’s), Chilltrix CX34 heatpump with (1) fancoil unit, Fantech HERO 250H HRV with comfopost heat/ cool delivery, Vinyltek triple pane windows and Thermatru front door.

Obtaining a 0.56 air changes per hour envelop seal, this house exceeds the Passivehaus standard. Tree-View is also expected to receive a 5 Star Built Green rating, along with Department of Energy’s Zero Energy Ready Home rating, Energy Star certification and EPA’s Indoor AirPLUS certification.

As always, indoor air quality (IAQ) is of utmost importance for TC Legend and our clients and Tree-View is no exception. With a top-quality heat recovery ventilator (HRV), humidity & CO2 sensors, HEPA filters, Awair IAQ monitor, and GreenGuard Gold cork flooring this house was built for clean air. Unfortunately, after about 2 months post-move-in, the surrounding cottonwood trees took an unexpected toll on the house. The massive amount of cottonwood fluff clogged the HRV intake and started cutting off the houses supply of fresh air. Thankfully, the Awair IAQ monitor immediately alerted the clients of the decreasing IAQ, allowing them to reach out to our team who swiftly acted and resolved the issue. Now all parties know to clean the intake regularly during peak cottonwood season!

The clients also opted for upgraded Kasa Smart light switches which connect to their phones and can be voice commanded by use of the central smart home device. According to their feedback, this has been a huge success and is incredibly helpful. Thus, further proving this smart home is truly the way of the future!

Forest Hill House

by Senna | Sep 29, 2021

The Forest Hill house was commissioned by a night-shift worker with a love of house plants & the land upon which he was raised. The lot, bequeathed by grandma, faces due south with a big sky view, interrupted only by a distant fir; ideal for passive solar harvest, active photovoltaic (PV) harvest, and vegetable harvest!

Built over the winter of 2020/ 2021, Jeff tells me the build was all straightforward, except grinding down the interior slab-on-grade after the stick-frame walls were built. The grinder is a frustratingly twitchy machine, time consuming, and no one’s favorite job. The result however is a beautiful concrete floor with the aggregate cut-through, showing patina from the bull-float & the cream in the concrete. This floor will endure through many years of very hard wear.

Equally durable materials are used to clad the SIP roof & walls; NuDura metal roofing & Hardie fiber-cement lap siding combine to protect the insulating SIPs foam panels. The siding was hung in-house by TC and the fellas did a fabulous job of precisely stacking the board-joints, setting up a very pleasing pattern in the siding.

To clad the small 6” ICF (Insulated concrete form) upstand, TC uses colored 26 gauge metal to protect the insulating foam from impact & abrasion.

The highly insulated energy-shell enables this home to be heated with 12Btu/ hour (max) Fujitsu minisplit. This is an all-electric, net zero house, ready for the future. Including the coming storms….

Battery power is a hot topic these days, with grid managers planning for greater grid efficiency by storing off-peak grid surplus in privately owned battery systems.

TC Installed the 5Kw LG lithium-ion house battery on the exterior north wall. Integrated with the PV, the battery allows the PV produced electricity to be stored, ensuring this all-electric house works even when the power goes down.

Neos House

by Senna | Aug 26, 2021

The Neos house is a 4 bedroom family house. 2614 square feet. Completed in spring 2021.

Designed as a multi-generational home with one full bathroom & one full bedroom on the 1^st floor, if the piano-room & the rec-room were enclosed with walls we’d have a 7-bedroom home. Enough for a substantial family to live together.

Pointing south, the view looks towards the huge garden.

The garden spills into the dining area through sliding doors. The folks who commissioned this home are gardeners, with kids, who will be drawn towards the natural world as a way to thrive.

The weather briefly nips at you as you walk from the front door to the garage under the covered walkway, creating a connection with the day’s weather and the world outside the energy-shell.

The SIPs installation was subcontracted because this is a Bellevue job & the TC crew have northern families & want to be home at night if possible. Issac taught a Peruvian framing crew how to sling the SIPs and the job ran fast & smoothly using advanced SIPs details required by the Bellevue jurisdiction.

Despite one design mistake (the mechanicals are in the unheated garage), this house is an exercise in textbook design for cost & energy performance.

The client did a stellar job of following design advice & the crew lovingly built the house, sealing the envelope to 0.6 air changes per hour, Passivehaus standard. The result is an economical house that has won a Department of Energy Grand Prize, attained 5-star Build Green certification and is certified Net Zero.

The envelope & mechanical systems are all drawn from the 2020 TC system: 6.5” walls, 10.25” SIP roof, 4” R20 foam under the slab, R24 ICF’s, Chilltrix CX34 heatpump with (1) fancoil upstairs, Zehnder 350 HRV with comfopost heat/ cool delivery. Vinyltek triple pane windows & Thermatru front door.

All the stormwater from the roof is infiltrated back into the onsite soils via a huge infiltration trench. Additionally, the excavation soils all remained onsite to reduce soils trucking. The clients took responsibility for seeding the exposed construction soils, choosing to plant a complex cover crop in place of the usual grass. The cover crop can be tilled back into the soils to impart nitrogen & other nutrients when a new planting regime is decided upon.

The house in a garden is a traditional family way of life and TC is proud to have built a modern, dense & flexible version of this ideal, updated to make all its own power to address the demands of the climate-change world.

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House in a Hollow

by Senna | Aug 25, 2021

The house-in-a-hollow isn’t really in a hollow, it’s on a knoll, above protected wetlands, northeast of Bellingham. The hollow is formed by the trees, which were preserved to shield the house from overheating, and to conserve the flora of the native wetlands.

Measuring 1950 square feet, this Department-of-Energy certified Net Zero clerestory design has a central kitchen and a 1^st floor aging-in-place floorplan. Designed for an Alaskan couple whose love of the outdoors demanded a house that fully engaged with the landscape, plenty of daylight is admitted & access to outdoor living is easy.

Most of the house is downstairs, leaving (2) bedrooms, a full bathroom and a rec-room upstairs for family visits, grandchildren to play Lego, perhaps an office if needed, old friends to take up residence…

Advances in TC’s mechanical systems determined that the radiant tubes embedded in the 4” concrete slab will serve as a back-up heating system to handle abrupt cold snaps, with the day-to-day heat & cool being delivered via the Zehnder Comfopost, a heating/ cooling coil that sits in the ventilation delivery ducts. The Comfopost coil is driven by the Chilltrix CX34 heatpump, along with a further fancoil heat/ cool unit located in the 2nd floor rec-room.

The energy-shell is formed using the system: 6.5” SIPs walls, 10.25” SIPs roof,’ with 4” slab-on-grade concrete-mass insulated from below with 4” of R20 foam. The openings are plugged with Vinytek triple pane Boreal windows & Thermatrue fiberglass doors.

TC Legend built this net-zero house through the winter of 2020/ 2021. The SIPs roof panels swung in on a crane through the blowing snow, Ted now reporting feeling has returned to his fingers, 6 months later! The owners planted over 630 native trees and shrubs in the chilling March rain, and the crew scooped up the mud and maintained the new 700’ driveway to this remote & beautiful lot: A gem in the Pacific Northwest.

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Purchase Plans-Set HERE!

Massey

by Senna | Apr 16, 2020

This 1,200 square-foot two-bedroom clerestory riverside home was built in 2020 in Ferry County, WA. TC Legend designed and permitted the home, and it was built by a Ferry County contractor.

The greater temperature swings associated with the continental climate led us to do a cost-efficiency study to choose the best SIPs panel thicknesses. Walls were bumped to 8 inches, yet the roof remained 10.25 inches. The exposed concrete stem wall footing stands high above the finished grade to keep the snow away from the panel toe, assisted by generous eaves and covered walks & porches, which also provide necessary shade during the hot summers.

An entry mudroom/utility room airlocks the house to minimize the entry of smoke during the fire season. Fresh, filtered air is delivered throughout the house via heat recovery ventilator (HRV), scavenging the heat from the waste air and imparting that heat into the incoming fresh air.

The circular windows are very easy to cut into SIPs panels; the trim-out is a bit more tricky.