Verified record
No state license for this trade. Maine doesn't license or register general contractor / remodelingbusinesses, so there's no state registry to check. That's true of every general contractor / remodeling business in the state, not a mark against this one. Insurance is self-reported.
Highlights
- Opera house renovation — a 2025 customer described a theater renovation and rebuild
- Timely completion — a 2022 customer said the project was completed in a timely manner
- An organized team — a 2026 customer praised the organization and communication
Ganneston Construction Corp lists general contracting, construction management, design-build, pre-construction services, metal building systems and historical building renovation in Maine among its services, and says it has been in business for 63 years. In a 2025 review, Johnson Hall Opera House said Ganneston Construction was its construction company and general manager for a theater renovation, and that they worked to rebuild the oldest operating opera house in Maine. A 2026 customer said the company was knowledgeable and professional from the start to the finish of the project, and recommended it for municipal construction projects. A 2026 reviewer called the team organized and praised its communication. On Google, the business has a 4-star rating from 9 ratings. A 2022 customer said the project was completed in a timely manner with no down time, and that the workmen were willing to lend a hand.
Heard around town
News & the web
- High winds cause scaffolding to collapse at Cross Office building in Augusta
“Ganneston Construction, the team working on the project, released the following statement: “Today’s high winds caused a portion of the stair towers and scaffolding to pull away from the Cross Office Building in Augusta. The ongoing work has been part of a two-year project to improve the building envelope.”
— wmtw.comRead the article ↗ - Scaffolding collapses at Cross Office building in Augusta due to powerful winds
“We are now in the process of creating a demolition plan to bring down the scaffolding safely," said Stacey Morrison, CEO of Ganneston Construction Corporations.”
— wgme.comRead the article ↗
What does a remodeling project cost in Greater Portland?
Typical your area range for this kind of work, from regional averages — not a quote from Ganneston Construction Corp. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
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