Talk about a makeover.
A 1927-built Dutch Colonial near Belmont High School wasn't just gut renovated — it was deep energy retrofitted.
Deep energy retrofits, defined as renovations that cut energy costs more than 50 percent, turn drafty houses into super-efficient homes.
The just-completed three-bedroom 2,700-square-foot single family at 158 Concord Ave. — on the market for $1,265,000 — looks like any number of contemporary makeovers. The living spaces have an open feel and there's a stylish kitchen with white cabinets, gray-and-white granite counters and Jenn-Air appliances, along with an adjacent sunroom dining area. The master bedroom suite has two closets with built-in storage, and an en-suite master bathroom features a glassed-in steam shower and a marble-topped double-sink vanity.
"A house doesn't have to look different to be green," said Leland DiMeco, the listing broker of the Belmont house and co-founder of Boston Green Realty, which specializes in selling energy-efficient properties. "And the price of deep retrofits is in the ballpark of a traditionally built high-end home."
But there are major differences in the way this house was reconstructed. Super-insulated walls are up to 16-inches thick, tilt-and-turn windows are triple-paned, and doors to the outside are nearly three inches thick. The roof and wall insulation exceeds the building code by 100 percent.
This retrofitted home will use 75 percent less energy than a traditional home.
And the air quality in the retrofitted house is more healthy than that in conventional homes, Butler said, with outside air brought into each room through ventilator fans, while stale air is exhausted. Indoor air runs through a heat exchanger to raise the temperature.
"The house has been rebuilt like a refrigerator," DiMeco said. "Once it reaches a certain temperature it's hard for that temperature to drop."
A wall-mounted heat pump unit takes care of the first floor and a small ducted heating/cooling system serves the top two floors.
"People wrongly think that deep energy retrofits are hugely expensive to do compared to a traditional gut renovation, " said contractor Brian Butler of Savilonis Construction, who has done more than a dozen DER projects. "But with the incentive rebates, it only costs about 6 percent more."
Developer Sachi Sato, who lives next door to 158 Concord Ave., bought the property from an elderly couple for $590,000 in 2013, and teamed up with her business partner Sayo Okada at SA2 Studios, which specializes in sustainable design and development.
"After we made the calculations, a deep energy retrofit made economic sense for this house because so much needed to be redone inside and out," said Sato, who tapped into utility National Grid's Deep Energy Retrofit incentive program, which provided $14,000 in rebates.
Sato estimates total construction costs at over $400,000, including the master bath addition and an all-new roof, and plumbing, electrical and heating/ventilation and tankless water heating systems.
"We're trying to get more builders to understand the benefits of doing deep energy retrofits," said DiMeco. "These properties not only cut energy costs significantly, but they are much healthier places to live."
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