americans embrace tiny houses as the future of sustainable living

digital rendering of the three-level enginuity home with a balcony and a small outbuilding

the tri-level home offers two bedrooms and 2.5 baths as well as an additional bed and bath in the accessory dwelling unit. enginuity even included a deck. (photo courtesy enginuity - northwestern solar decathlon team)

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infrastructure

by grayson welo

a northwestern university (nu) student team prioritized energy conservation with thermally-insulating walls, air-source heat pumps, slanted windows, and led lights in their winning bid for an attractive, cost-effective solar home. 

the team of 12 nu engineering undergraduates won the 2021 solar decathlon design challenge hosted by the u.s. department of energy. the competition asked college students to design efficient and innovative buildings powered by renewable energy. the nu team, enginuity, won the competition with its plans for a sustainable, urban single-family home, with 2,326 square feet of living space. in the past, teams would construct real-size models of homes. however, due to covid-19 restrictions, this year’s participants worked virtually and submitted building designs as their final product.  

“our goal with the home was to be net zero, so that meant producing the same amount of energy as we consumed,” said andrea lin, a northwestern senior studying environmental engineering. “our main approach was to reduce the amount of energy that our building consumed, so a lot of our design choices were based on trying to reduce the amount of envelope.”

the size of the dwelling places it outside of the range of tiny houses — usually sized between 100 and 400 square feet. but it is still compact, meant for a narrow 25 x 125 feet plot, making the trend toward smaller, more energy efficient homes. 

“we tried to be financially and socially sustainable by having a separate dwelling unit on the first floor that could be used in a variety of ways to help people age in place,” said saahir ganti-agrawal, a northwestern sophomore studying materials science.

this year’s solar decathlon design challenge exemplifies the growing trend toward sustainable housing and accessible dwellings in the united states. coincidentally in september, northwestern’s home base town of evanston approved flexible zoning regulations, permitting accessory dwelling units (adus). the chicago city council also allowed property owners in five pilot areas to create adus on their property as of may.  

an accessory dwelling unit is an independent housing unit on the same lot or attached to a standard single-family residence. in chicago’s south, southwest, and east zones, the city council set a cap of two adu permits per block per year. the unit can be an apartment over a garage, a basement unit, or even a tiny house in the backyard. they can serve multiple purposes, such as housing for adult children, office spaces for home businesses, rentals for extra income, and age-in-place retirement options. 

although some people may think these smaller housing alternatives represent a fad, recent data shows that many americans look favorably upon tiny houses and would even live in one. 

according to a survey conducted last november by fidelity national financial company, 56% of respondents would live in a tiny house and 84% would consider living in a tiny house as a retirement option. some 86% of non-homeowners surveyed said they would consider purchasing a tiny house as their first home. 

respondents ranked affordability, efficiency, eco-friendliness, and a minimal lifestyle as the most appealing factors for turning to tiny living. the survey also reported that the median price of a tiny home runs between $30,000 and $60,000 with the median price of a traditional starter home at $233,400. however, only 53% of respondents said they could afford a starter home, while 79% said they could afford to buy a tiny home. 

graph
(graph by grayson welo)

many of these considerations drew haley van bellingham to live in her current mobile tiny house in schenectady, new york: “it definitely had a lot to do with creating a smaller footprint, but we also decided it was a good compromise as full-time caretakers of my grandmother to have our independence and privacy… it’s convenient because we can stay on her property but still get on with our lives,” she said. van bellingham, a writer, lives with her current partner in their tiny house which provides plenty of flexibility. one bonus for the 29-year-old is that, after three years, she has already paid off 50%-60% of her tiny house mortgage. 

haley van bellingham’s 250-square-foot home includes two bedrooms and one bath. the home’s mobile features support her desire to travel. 
(photo courtesy of haley van bellingham)

it’s no surprise that tiny houses attract a younger consumer considering their affordable prices and easy-maintenance size. 

this is a result that jean-philippe marquis, vice president of minimaliste houses, has seen first-hand. 

founded in quebec in 2015, minimaliste houses is a company involved in the north american housing market that builds tiny houses on wheels. marquis described a large portion of the company’s target market as young professionals and people looking to make long-term investments since their houses are built to last up to 60 years. minimaliste plans to target a younger demographic of americans who enjoy traveling from state to state. 

“we have a new product coming right now that is more of a four season rv, targeting people that want to be nomads and travel no matter the climate or students who want to invest in something at an earlier age and live full-time in it while they’re at school.” 

 

minimaliste offers 14 models, such as the above noyer xl,  for customers to take inspiration from, but the company also customizes mobile homes at its clients’ request. 
(photo courtesy of jp marquis )

most notably, minimaliste prides itself on its sustainable development perspective. while the size of their houses — about 200 to 400 square feet — already allows for a smaller carbon footprint, the company designs every aspect of the building and delivery of their units to minimize waste. thanks to emails with customers and zoom calls with design teams, there is almost no travel involved. minimaliste uses a computerized saw to minimize the loss of materials and solar panels on the company’s shop to lower its carbon footprint. the units run on the minimum amount of electricity and heating necessary, with energy conservation integrated into the construction. their houses can even save 12% in energy per year with the use of a mini-split air conditioning system. while traditional new homes usually have 2.1 air changes per hour (ach), minimaliste’s tiny homes allow for 1.12 ach which is airtight for dwellings under 350 square feet. 

 

the lilas model includes 360 square feet of space with one bed, one bath, a living room, and kitchen for the base price of 127,500 canadian dollars or approximately 106,000 u.s. dollars. 
(photo and floorplan courtesy jp marquis)

while sustainability is not central to the missions of all tiny home companies, builders recognize that it is a priority for many of their customers. “when it makes the most sense financially and feasibility-wise, we do try to pay attention to the materials that we use,” said byron denhart, the owner of switchgrass tiny homes, based in urbana, illinois. “we are down to one planet, let’s not screw it up (… ) some of our customers really take that to heart when they are choosing the materials and choose something very specific and sustainable.” 

 

since its start in 2016, switchgrass has built 14 custom houses on wheels. television series “house hunters” and “tiny house big living” have showcased the company’s homes. 
(photo courtesy of byron denhart)

kol peterson started caravan, the tiny house hotel, in 2013 with his ex-wife before the trend of tiny houses took off and before hgtv even aired shows about tiny houses. the idea for the portland, oregon, hotel, which swaps traditional rooms for individual mobile tiny homes, stemmed from peterson’s interest in small, environmentally friendly housing and his ex-wife’s interest in traveling. peterson’s watched the adu market expand since caravan’s inception and has recently seen it pick up steam in portland. 

 

the amazing mysterium is one of caravan’s 6 tiny houses. the turquoise dwelling is the smallest of the hotel’s houses — 120 square feet — and was modeled after a traditional vardo wagon. 
(photo courtesy of jeffrey freeman)

 

guests traditionally stay at the hotel for one to three nights. but due to the pandemic, the company converted its business model and now requires one-month minimum stays. 
(photo courtesy of jeffrey freeman)

“we just passed the first legislation anywhere in the united states two weeks ago,” for tiny mobile homes, said peterson. “august 1st, it allows people legally to live in tiny houses on wheels and rvs anywhere in portland, so there is a pretty robust market now where people are thinking more legitimately about tiny houses because there is a legitimate regulatory pathway.” 

while many cities and states, including illinois, are starting to pass more flexible regulations, allowing for the creation of adus and tiny houses, the momentum across the united states is gradual due to strict guidelines for what legally constitutes a habitable dwelling.

“they (tiny houses) are becoming more popular, and younger people are more environmentally conscious,” said van bellingham. “we are running out of space, so there is nowhere to go but small.” 

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tags:
illinois, northwestern, solar decathlon, sustainability, tiny houses

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