Denali Construction Corp is a custom-home builder listed at 21 East Meadow Lane in Middleton, Massachusetts, run by James DePaolo as president with John Girard Jr. also listed as an owner. A 2018 award announcement placed the company in North Reading, Massachusetts, so the Middleton address appears to be where it operates from now.
The work it is hired for is at the top end of residential construction. Building permits filed under its name include a $2,026,784 new house with an 18-by-40 in-ground pool on Hillside Street in Milton in 2015, a $1,486,550 new single-family home on Pine Ridge Road in Waban in 2019, a $687,000 addition and remodel on Park Street in Newton in 2021, and — most recently — a $450,000 detached four-car garage with a second-floor lounge and recording studio in Milton in March 2025, followed by a $1,990,000 gut renovation of a three-story house at the same address that September. Twelve permitted projects are on record across Middleton, Milton, Newton, Waban, Weston, West Newton and Waltham.
Architects and the design press have noticed. In 2018 the New Hampshire chapter of the American Institute of Architects gave a Merit Award for Excellence in Architecture to a lakeside cabin in Center Harbor designed by Murdough Design, with Denali named as the general contractor and the project completed in September 2017. Boston.com made a Weston house it built with LDa Architecture & Interiors its Home of the Week in 2020, and in a 2019 Boston Design Guide feature its principal discussed a two-story stair the firm built in steel and stained white oak.
What is absent is the homeowner's side of the story. BuildZoom states it has received no reviews for the company, and no review platform produced a profile of it at all — so nothing here describes how Denali communicates, holds a schedule, handles change orders, or prices work. The rating reflects a strong professional and permit record, not customer feedback, and is held at low confidence for that reason.
BuildZoom also reports Massachusetts Home Improvement Contractor registration #156489 as active, issued 10-27-2025, and says it confirmed that as of April 2026 — a directory's claim rather than a registry check, so verify it yourself with the Massachusetts Office of Consumer Affairs and Business Regulation. This is the right firm to talk to for a large custom build or a whole-house renovation; ask for references from the Milton and Newton projects, since the public record shows what they built but no customer has written down how it went.