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When It Comes To Insurance, We Cover A Lot Of Ground. It's in our nature! Our Down to Earth Mountaineers Can Help You Navigate Your Unique Insurance Needs.


Welcome, Longmeadow!

Join us in welcoming G.W. Morisi Insurance Agency to the MountainOne family! As a third generation, family-owned agency, they have served Longmeadow and neighboring communities for more than 75 years!

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Welcome, Stockbridge!

We are excited to serve you from our new office at 31 Main Street! We invite you to stop in and say hello. In the meantime, explore our website to learn more about MountainOne Insurance!

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High-Value Home Insurance

Specializing in high-value home insurance for high-net-worth clients for over 50 years! We cover your unique needs, including property insurance, contents, valuable articles, personal liability, umbrella coverage, and more.

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Personal Insurance

We’re the insurance provider more local residents and businesses trust. To help earn this trust, we help you find the right coverage to fit your needs.

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Business Insurance

We know that every business is different and so are its needs. With our staff of experts, we partner with you to find the insurance solutions that protect you against the unique risks that your business faces.

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Group Benefits

More than anything, today's executives, business owners and HR decision-makers desire one characteristic from an Employee Benefits strategy: Simplicity.

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Our company understands the intricacies of the complex bonding industry and has the expertise to put together the most competitive bonding packages available in the marketplace.

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When it comes to Medicare, you have choices. Let us help you find the best plan to fit your health care needs.

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Top Insurance Employer

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2022 Top Insurance Employer

Recent Updates

April 12, 2024

Your workforce is your company’s biggest strength. However, when that workforce isn’t as healthy as it could be, the organization suffers. Keeping your employees physically and emotionally healthy is a...

April 4, 2024

Commercial property owners are struggling to balance a positive bottom line as tenant vacancies and insurance premiums increase. According to Moody’s Analytics’ Q4 2023 Preliminary Trend Announcement, commercial real estate...

PHONE SYSTEM UPGRADE: All MountainOne's phones and voicemail will be unavailable beginning at 4:00 pm on Tuesday, April 16 while we upgrade our telephone system. We appreciate your patience, and as always, our Online and Mobile Banking services are available 24 hours a day. Thank you!