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Dianne Mongeau

Gibson Sotheby's International RealtyMember of Gibson SIR Cape Cod
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Recent Sales

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  • $1,725,000
    4 bd3 ba2,509 sqft Brewster, MA
    4 bd3 ba2,509 sqft
    Brewster, MA
    Sold 14 days ago
    Buyer
    166 Highland Moors Drive, Brewster, MA, 02631
  • $1,700,000
    3 bd2 ba1,743 sqft North Chatham, MA
    3 bd2 ba1,743 sqft
    North Chatham, MA
    Sold 1 month ago
    Buyer
    44 Emery Lane, North Chatham, MA, 02650
  • $1,285,000
    3 bd2 ba1,336 sqft Harwich, MA
    3 bd2 ba1,336 sqft
    Harwich, MA
    Sold 1 month ago
    Seller
    19 Deer Run, Harwich, MA, 02645
  • $1,425,000
    3 bd3 ba2,131 sqft Harwich, MA
    3 bd3 ba2,131 sqft
    Harwich, MA
    Sold 2 months ago
    Seller
    45 Indian Trail, Harwich, MA, 02645
  • $1,165,000
    5 bd2 ba2,560 sqft West Harwich, MA
    5 bd2 ba2,560 sqft
    West Harwich, MA
    Sold 2 months ago
    Seller
    77 Pleasant Road, West Harwich, MA, 02671
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10
Sales last 12 months
352
Total sales
$355K-$2.4M
Price range
$1M
Average price

Get to know Dianne Mongeau

Real Estate Professional

Specialties
Buyer's AgentListing AgentRelocationStaging
33 Years of experience

Dianne Mongeau's listings & sales (354)

For Sale
For Rent
Sold
This map can show the most recent 100 listings and 100 sales. Review all listings and sales below.

For Sale (2)

Sold (352)

Address
Sold date
Closing price
Represented
Flag Sale
12/4/2025$1,725,000Buyer
11/17/2025$1,700,000Buyer
11/7/2025$1,285,000Seller
10/24/2025$1,425,000Seller
10/17/2025$1,165,000Seller

Dianne Mongeau's reviews (48)

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  • 5.0
    • 12/1/2025
    • cas2122

    Bought a Single Family home in 2025 in North chatham, North chatham, MA.

    Having an agent like Dianne when buying in the cape is a must! She knows everything about the towns, knows where the value is, is always reachable, and can be there when ...
    Having an agent like Dianne when buying in the cape is a must! She knows everything about the towns, knows where the value is, is ...
    5.0
    • 5/12/2025
    • carol sander

    Sold a home in 2025.

    Dianne brought energy, professionalism, and a wealth of real estate expertise to our very first meeting. Her depth of knowledge of the Cape market in general, and the lo...
    Dianne brought energy, professionalism, and a wealth of real estate expertise to our very first meeting. Her depth of knowledge o...
  • 5.0
    • 1/28/2025
    • user03713603

    Sold a Condo home in 2024 in Harwich, MA.

    I cannot recommend Dianne Mongeau highly enough! She recently helped me sell my condo in Harwich, MA, and the entire process was seamless from start to finish. Dianne’s d...
    I cannot recommend Dianne Mongeau highly enough! She recently helped me sell my condo in Harwich, MA, and the entire process was s...
    5.0
    • 1/14/2025
    • katiek 78

    Sold a home in 2024.

    Dianne did an excellent job with the sale of our house. Her knowledge of the area was essential in helping us determine a list price. The staging of the house was wonder...
    Dianne did an excellent job with the sale of our house. Her knowledge of the area was essential in helping us determine a list pri...
  • 5.0
    • 12/7/2023
    • cheryleckel

    Bought a home in 2023.

    Diane went above and beyond to find us the perfect home in the location that we wanted! She worked tirelessly on our behalf. Diane is very experienced and make sure every...
    Diane went above and beyond to find us the perfect home in the location that we wanted! She worked tirelessly on our behalf. Diane...
    5.0
    • 1/5/2023
    • kate c larson

    Bought a home in 2022.

    Dianne is an amazing real estate broker! We were completely unfamiliar with the real estate market on Cape Cod, and Dianne guided us through the pros and cons of various ...
    Dianne is an amazing real estate broker! We were completely unfamiliar with the real estate market on Cape Cod, and Dianne guided ...
  • 5.0
    • 1/5/2023
    • AmandaStark6

    Bought a Single Family home in 2022 in Harwich port, MA.

    Dianne was a pleasure to work with in the purchase of our primary home and one to renovate. Her knowledge of the the Cape Cod market is excellent. Her response time, atte...
    Dianne was a pleasure to work with in the purchase of our primary home and one to renovate. Her knowledge of the the Cape Cod mark...
    5.0
    • 9/29/2022
    • cjd9129

    Sold a Single Family home in 2022 in West harwich, MA.

    Dianne Mongeau is the best! I called Dianne at Gibson Sotheby’s after reading some positive reviews and she came out to see our house on that same day which really impre...
    Dianne Mongeau is the best! I called Dianne at Gibson Sotheby’s after reading some positive reviews and she came out to see our h...
  • 5.0
    • 7/12/2022
    • patricia mitro

    Sold a Single Family home in 2022 in West dennis, South dennis, MA.

    We were very pleased with Dianne's guidance throughout the listing and selling process. She provide valuable advice on getting our home ready to sell and worked with us ...
    We were very pleased with Dianne's guidance throughout the listing and selling process. She provide valuable advice on getting ou...
    5.0
    • 7/8/2022
    • FMMBuilder

    Sold a Single Family home in 2022 in Harwich, MA.

    We can't speak highly enough about Dianne! She was professional, extremely helpful and paid close attention to details. Gave helpful tips on what was needed to sell the...
    We can't speak highly enough about Dianne! She was professional, extremely helpful and paid close attention to details. Gave hel...
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Dianne Mongeau

Gibson Sotheby's International RealtyMember of Gibson SIR Cape Cod
10sales last 12 months
352total sales
$355K-$2.4Mprice range
$1Maverage price
33years of experience