Hampden, MA Stretch Energy Code Support

Hampden is still on the state base energy code; the state's adoption list shows no Stretch Code or Specialized (Opt-In) Code adoption for Hampden.

On the base code, new homes and additions in Hampden can show compliance through the prescriptive path, REScheck or a performance/HERS approach. The fixed HERS caps of the Stretch Code (HERS 42 mixed-fuel or 45 all-electric for new homes, and HERS 65 or 70 for renovations and additions over 1,000 sq ft or over 100% of the existing home) apply only in Stretch and Specialized towns, so they are not required here unless Hampden adopts the Stretch Code. Smaller additions and alterations typically use REScheck or the prescriptive tables, and commercial buildings up to 20,000 sq ft can use COMcheck.

Many Hampden owners still choose a HERS rating, because it documents air tightness and duct testing and keeps the project ready if the town's code changes before the permit is issued.

In Hampden, building permits go through the Building Department. Paper application forms are posted on the town website; no online portal is listed.

Air sealing is where most scores are won or lost. Attic hatches, rim joists, recessed lights and plumbing penetrations are the usual leaks in Hampden homes, so we mark them on the plans and check them on site before insulation is covered.

Duct leakage counts too. Ducts outside the conditioned space have to be sealed and tested, and keeping them inside the thermal envelope makes the target much easier to reach.

Our Marlborough office at 272 Lincoln St C1 covers Hampden. Sending us the plans before the permit application lets the HERS, REScheck or COMcheck paperwork go in with the submission instead of holding up plan review.