How to Make a Home More Sustainable

    By Barbara Ballinger for Realtor Magazine
    Robert Kneschke – AdobeStock

    The buzz in residential real estate is all about sustainability, and the good news is there are a plethora of ways to improve the efficiency and durability of a home.

    Goals change; countertops fabricated from imported granite and showers lined with sprays that endlessly shoot water from head to toe are no longer at the top of all homeowners’ wish lists. Sustainable features are the latest trend to attract buyers. Houses marketed with low-flow toilets and showerheads, multipane windows, electric charging stations, and kitchen countertops made from locally quarried stone are what makes today’s home shoppers swoon.

    According to the 2018 National Association of REALTORS® Sustainability Resource Guide, 61% of surveyed members said their clients are interested in sustainability and want more of these features in their homes—and it’s not just millennials requesting them. Almost every age group wants to save money, pare energy and water consumption, and remove toxins from the air they breathe. “Reducing utility bills is often the driver, but many also want to do the right thing,” says architect Tony Schmitz, sustainability director at Hoefer Wysocki, based in Leawood, Kan.

    The good news is there are innumerable steps that homeowners can take, and the cost to act sustainably may be modest, adding an extra 5% to 10% to the purchase price, says Prentis Hale, principal at SHED Architecture + Design in Seattle, which has long practiced sustainability. One important caveat to remind clients is that a return on investment may not be immediate, and it hinges on both the cost to buy and install a product or system and the area’s climate.

    Here are 10 tips real estate pros can use to advise their sustainable-conscious clients who are looking to purchase or update a home.

    SHED

    1. Size. Whether starting over or adding on, it’s essential to analyze needs and try to go smaller, says architect Duo Dickinson, author of Staying Put: Remodel Your House to Get the Home You Want (The Taunton Press). “Size is controllable, unlike the weather. Smarter almost always means smaller without sacrificing usefulness or delight,” he says. Hale encourages clients to keep homes under 2,500 square feet. One way to do so is by having small bedrooms, he says. Nick Rosen, who lives off the grid in a small house in Spain part of the year, stresses the importance of not overutilizing land, too. “Land is both an asset and a liability since it requires maintenance. Choose strictly what you think you will need and no more,” he says.

    2. Embodied energy. There’s growing recognition about the importance of the term embodied energy. Steffen Lehmann, dean of the University of Nevada, Las Vegas’ School of Architecture, defines it as the amount of energy consumed by all the processes associated with the production of a building, from mining materials to processing natural resources, and the manufacture, transport, and delivery of products. “It’s important for homeowners to ask builders and architects what they will do regarding this and how they intend to keep the embodied energy low,” he says. One strategy is to use only locally sourced and processed materials that don’t need to travel around the globe, he says. Another is to keep construction simple, so assembling components doesn’t require a lot of energy. By buying from local suppliers, a homeowner is more likely to find someone who will return and fix something, Rosen says.

    3. Insulation and heating. The first step a homeowner should take before making changes to a home is to have an energy audit conducted to gauge the efficiency of the home’s systems, says architect Nathan Kipnis, founder of Kipnis Architecture + Planning in Evanston, Ill. The next steps, based on the audit, would likely be to air seal the house by caulking gaps around windows, doors, and recessed lights. Poorly insulated windows should be replaced with multipane windows. Next up should be improving wall, attic, and basement insulation, based on the R value for the homeowner’s area, Kipnis says. Any home built before 1990 should have an updated heating and cooling system, says Schmitz. Kipnis likes a geothermal ground source heat or air source heat pump, both of which are electric and help to minimize carbon from a building’s energy use. A tight home in a cold climate also should have a heat recovery ventilator to bring in fresh air to keep the home healthy, Kipnis says. A programmable smart thermostat like a Nest is useful to save more energy since it learns a homeowner’s patterns and lowers temperatures when they are away.

    SHED

    4. Landscaping and water use. As the cost of landscaping continues to rise, homeowners are more aware that sustainable choices will survive longer and require less water and maintenance, says author and landscape designer Michael Glassman, whose eponymous firm is based in Sacramento, Calif. Native plants, permeable pavers, and drip irrigation systems all pare water use, he says. Local codes must be considered, too. Seattle, for instance, updated its stormwater code in 2016 to require stormwater to be mitigated on a property rather than immediately discharged to the street or combined sewer, Hale says. Development size and site will dictate what can and must be done. “We frequently use strategies that include green roofs, bioretention planters or rain gardens, permeable pavers and concrete, and properly graded sites,” says Glassman, co-author of The Garden Bible (Images Publishing). Besides paring water use, landscaping with large shade trees can block sunlight and lessen the need for air conditioning. Trees must be planted on the right side of the house to work, ideally the west, and far enough from homes in areas prone to fires, which some local codes now require, he says.

     

    AJ Brown / Nathan Kipnis, architect, Kipnis Architecture + Planning

    5. Solar panels. The huge decrease in cost, along with the federal solar tax credit, have made solar panels a more affordable option for many homeowners, says Kipnis. The current tax credit at 30% of the system cost will end at the close of the 2019. It goes down to 26% in 2020, 22% in 2021, and 10% credit in 2022 and beyond. The panels can be used in combination with a battery storage system to provide homeowners with a way to store energy when the sun isn’t shining and to provide backup power. The cost of battery storage is dropping significantly year over year as battery technology research is starting to pay off commercially, Kipnis says. Some caveats with solar panels: First, efficiency keeps improving, so some may become obsolete not long after installation. Second, not all buyers view them as a plus because of how they look, says Schmitz. Clients who prefer a nonsolar, traditional shingle roof—the least costly choice—should opt for light-colored shingles that retain less heat, Lehmann says.

    Ellumi

    6. Lights. Natural daylight is the least expensive form of light and should be maximized in new construction and renovations. But when it comes to artificial lights, LEDs are the preferred choice. Energy Star–rated products use at least 75% less energy and last 25 times longer than incandescent lighting, according to the U.S. Department of Energy. Besides saving money, the latest generation of LEDs offer other benefits. They render color more realistically than prior generations did, and can almost match incandescent light colors, especially when their measurement is at least 3,000 kelvin or higher, Kipnis says. Some LED bulbs such as Norb’s NorbSlEEP bulb can help modulate the body’s circadian rhythm so people sleep better. Others, like those manufactured by ellumi with proprietary technology from Vital Vio, stop bacteria and mold from developing, eliminating the need for chemical cleaners.

    7. Plumbing. Whether it’s a house with many bathrooms or many occupants, water figuratively and literally goes down the drain when people flush toilets, shower, wash dishes, or run the dishwasher frequently. Smart choices include low-flow toilets and showerheads, faucets with aerators, and front-loading washing machines. Schmitz likes tankless water heaters because they heat water on demand rather than continuously, but they require a gas source. Some utility companies offer rebates or incentives when homeowners buy water-saving appliances, so it’s wise for owners look for the EPA WaterSense label or Energy Star certification. Some utilities also offer smart meters and other systems so homeowners can program appliances to start at the least expensive time to use energy, according to the U.S. Department of Energy.

    8. Nontoxic, natural materials. Air quality also affects sustainability, so it’s smart to make choices that limit volatile organic compounds in paint, carpeting, and adhesives, says Schmitz. When possible, homeowners should also go for natural materials in the home, such as all-wool carpeting, quartz, and reclaimed wood.

    9. Transportation and walkability. Sustainability isn’t just about a person’s home but also what vehicles they drive and how often they use them. Charging stations have already become a hot amenity in housing, Hale says. But the more a homeowner can walk, bicycle, or take public transportation, the better, says Kipnis. Housing demand is only expected to increase in walkable areas, in both cities and suburbs, according the report Foot Traffic Ahead 2019, from the George Washington University School of Business and Smart Growth America.

    Mark Woods for SHED

    10. Recycle. Some states offer benefits to homeowners and developers who recycle construction materials during a remodel or teardown, says Kipnis. His state of Illinois is among those that have a deconstruction program in place, offering potential tax benefits associated with donation, revenue from material resale, and reduced waste management costs. There are also private companies that specialize in deconstruction and donation of building materials, such as Recyclean Inc. in Kenosha, Wis. Kipnis cautions that some materials are more recyclable than others (such as glass and metal versus concrete), and some materials are not recyclable if their materials are bound together, including certain countertops that mix aggregates, he says.

    3 Critical Steps for Homeowners Eager to Learn About Sustainability

    Steffen Lehmann

    1. Recognize that the most sustainable building is usually the one that exists (depending on condition). “Homeowners should try to reuse and improve an existing home rather than start over,” says architect Steffen Lehmann.

    2. Heed those long-touted, simple conservation tips: turn off the lights, don’t let water run endlessly while brushing teeth or showering, and unplug small appliances and turn off the TV when not in use.

    3. When considering building new or taking on a major home renovation, hire professionals who are skilled and knowledgeable in sustainable design. “When interviewing [builders], the homeowners should ask if the person makes sustainable choices when selecting materials, systems, and construction methods,” says architect Tony Schmitz. Look at their website to see if sustainability is a focus. Just as important as what goes into a house is what builders do with waste. What goes into a landfill should be limited, says Marc Spiegel, co-founder and head of construction and demolition for Rubicon Global in Atlanta.


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