Sustainable building, green construction, eco-friendly homes, passive design, and how to build a house that's good for you and good for the planet.
Orient the long axis of your home east-west. South-facing windows capture winter sun. Overhangs block summer sun. Thermal mass (concrete, tile) stores heat. Reduces heating costs by 30-70%. Free energy from the sun.
The cheapest energy is the energy you don't use. Insulate beyond code: R-38+ attic, R-21+ walls, R-10+ foundation. Air sealing is as important as insulation. Blower door test to find leaks. Spray foam or dense-pack cellulose.
HVAC is 50% of home energy use. Heat pump systems are 2-3x more efficient than gas furnaces. Heat pump water heaters save $300+/year. Induction cooktops are faster and more efficient than gas. LED lighting throughout.
Low-flow fixtures save 30% of water use. Dual-flush toilets. Rainwater collection (legal in most states). Greywater recycling for irrigation. Native landscaping eliminates irrigation entirely. Drip irrigation where needed.
FSC-certified lumber. Recycled steel framing. Reclaimed wood for finishes. Low-VOC paint and finishes. Bamboo or cork flooring. Recycled glass countertops. Fiber cement siding (lasts 50+ years). Metal roofing (lasts 50-70 years, recyclable).
Rooftop solar is now cheaper than grid electricity in most of the US. 6-8kW system covers most homes. Battery storage (Tesla Powerwall, Enphase) for nighttime and outages. Federal tax credit: 30% of cost. Payback: 5-8 years.
The most recognized green building certification. Points for energy, water, materials, indoor air quality, and site. Certified, Silver, Gold, Platinum levels. Adds 3-5% to construction cost, adds 5-10% to resale value.
EPA certification for homes that are 15-30% more efficient than standard code. Easier to achieve than LEED. Recognized by buyers. Required third-party HERS rating (Home Energy Rating System). Score of 0-100 (lower is better).
The most rigorous standard. 90% reduction in heating/cooling energy. Airtight construction, super-insulation, HRV ventilation, triple-pane windows. Expensive but extraordinary comfort and efficiency.
A home that produces as much energy as it uses annually. Combine passive design + high efficiency + solar. Net zero homes have $0 utility bills. The future of residential construction.
Before renovating, get a professional energy audit ($200-500). They'll use a blower door and infrared camera to find exactly where your home is losing energy. Fix those things first for the biggest ROI.
LED bulbs (save $100+/year). Smart thermostat ($50-200, saves 10-15%). Weatherstripping on doors and windows ($50). Attic insulation top-up ($500-1,500). Low-flow showerheads ($20 each). Caulk gaps around windows.
Heat pump HVAC ($5,000-15,000, saves 30-50% on heating/cooling). Heat pump water heater ($1,500-3,000, saves $300/year). New windows ($8,000-20,000 for whole house). Attic air sealing ($1,000-3,000).
Solar panels ($15,000-25,000 before tax credit). Battery storage ($10,000-15,000). Deep energy retrofit (insulation + air sealing + HVAC: $20,000-50,000). Complete electrification (remove all gas: $10,000-30,000).