A newly built home can still save energy after a tax provision ends. What changed is the federal incentive behind part of the builder’s economics: IRS guidance says the Section 45L New Energy Efficient Home Credit, worth up to $5,000 for qualifying homes, applied to eligible homes acquired through June 30, 2026.
Who received the credit
Section 45L was a contractor credit. A builder or other eligible contractor had to meet the program rules; it was not a buyer rebate that automatically appeared at closing. Any effect on the sale price depended on the builder’s pricing decision.
What to ask for now
Request the exact ENERGY STAR or Zero Energy Ready Home certification, HERS or other available energy score, insulation and air-sealing details, HVAC sizing, window specifications and an address-specific utility estimate. A marketing label is not a substitute for documentation.
Compare comfort and operating cost
Look beyond an estimated annual savings figure. Ask about room-to-room temperature balance, ventilation, humidity control, equipment warranties and replacement costs. Confirm whether solar, batteries or smart controls are included, leased or simply shown as optional upgrades.
The HomeCostGrid view
Negotiate from today’s out-the-door home price and verified performance. If a salesperson mentions a tax credit, ask who claims it, what acquisition date applies and where the current IRS rule is written before using it in your budget.
