Coastal living, thoughtfully built
The number that matters
Every Harborlight home is HERS-rated
A third-party Home Energy Rating System score comes standard — lower is better. Our 2026 average is 54: roughly half the energy use of a typical Bay-area resale home, verified by an independent rater before closing. On the water, efficiency is also comfort: tight envelopes don't whistle in a nor'easter.
ENERGY STAR® certifiedIndoor airPLUSSolar-ready
HERS Index · Lower is better
Typical resale home (pre-2000)130
Standard new home (code-built)100
Harborlight 2026 average54
Independently rated per RESNET standards. Your home's score is posted at the closing walkthrough.
Standard in every home
Where the efficiency lives
Envelope
- Spray-foam sealed rim joists
- R-49 attic insulation
- Coastal-rated low-E windows
- Blower-door tested ≤ 3 ACH50
Systems
- 16-SEER2 heat pump HVAC
- Sealed & tested ductwork
- Heat-pump water heater
- Smart thermostat standard
Air & water
- ERV fresh-air ventilation
- MERV-13 filtration
- Low-VOC paints & finishes
- WaterSense fixtures
Future-ready
- Solar conduit & roof blocking
- EV-charger rough-in, garage
- 200-amp panel w/ capacity
- Battery-storage pre-wire option
What it's worth
$1,380 / year
Average projected utility savings versus a code-built home of the same size — every year, before a single solar panel. Your home's projected savings appear on its HERS certificate.