Andrea Mongeau, Realtor Keller Williams Signature Properties

Andrea Mongeau, Realtor Keller Williams Signature Properties A top producing real estate agent in Massachusetts, expert negotiator, extensive sales experience and a passion for real estate.

Dedicated to helping clients build wealth and lasting legacies, delivering exceptional service with a client-first approach.

There are so many special places on the south shore and this area of Marshfield is one of them. Gorgeous Green Harbor be...
09/01/2026

There are so many special places on the south shore and this area of Marshfield is one of them. Gorgeous Green Harbor beach, a huge variety of restaurants and walkable to the highly rated elementary school. It’s been a beautiful home for the seller and will be just as special to its new owners. Just sold!

A recognition I’m especially grateful for. 😊Our office has been named the 2026 Best of the South Shore winner in the Rea...
08/25/2026

A recognition I’m especially grateful for. 😊

Our office has been named the 2026 Best of the South Shore winner in the Real Estate Brokerage category!

I’m always grateful for recognition like this, not just because it’s an award, but because it reflects the trust our clients place in us to guide them through some of the biggest decisions they’ll make.

Real estate is local. It’s knowing the neighborhoods, understanding the market, recognizing opportunities, knowing when to negotiate, when to be patient, and when to move quickly. And most importantly, it’s having an experienced professional in your corner who knows how to put all of those pieces together.

I’m proud to be part of an office that continues to set a high standard for service and expertise across the South Shore.

So, thank you to everyone who took the time to vote and to the clients who continue to trust me with your homes, your investments, your next chapters and your referrals. It truly means more than you know. ♡

𝐏𝐫𝐨𝐮𝐝 𝐨𝐟 𝐭𝐡𝐞 𝐫𝐞𝐜𝐨𝐠𝐧𝐢𝐭𝐢𝐨𝐧. 𝐄𝐯𝐞𝐧 𝐦𝐨𝐫𝐞 𝐩𝐫𝐨𝐮𝐝 𝐨𝐟 𝐭𝐡𝐞 𝐰𝐨𝐫𝐤 𝐛𝐞𝐡𝐢𝐧𝐝 𝐢𝐭.

ᗷEᗩᑕᕼ ᕼOᑌᔕE ᗩᒪEᖇT!T and I first connected in early June. They had a couple homes they wanted to see, but after visiting ...
07/21/2026

ᗷEᗩᑕᕼ ᕼOᑌᔕE ᗩᒪEᖇT!

T and I first connected in early June. They had a couple homes they wanted to see, but after visiting in person they quickly realized they weren’t quite right. After getting a better sense of what they were looking for, I suggested we explore a beach neighborhood a little farther down the road from where we had started.

You may not know Swifts Beach, but for those who do, you know it’s special. ✨

Our second day of home tours brought us to Swift Ave and the rest is history. This home is the perfect summer (and shoulder season) escape for their family. With six kids, the spacious layout, oversized driveway, rare double lot, and an amazing in-ground pool give everyone room to spread out, relax, and make memories together.

They already have plans for fresh flooring, paint, and adding a coastal touch to make it their own. I can’t wait to see the transformation and watch this become a place where their family gathers for years to come.

Congratulations T&B! Wishing you endless beach days, pool parties, family dinners, and unforgettable memories in your new happy place. Cheers! 🥂☀️🌊

ᴘᴇᴍʙʀᴏᴋᴇ’ꜱ ɴᴇᴡᴇꜱᴛ ɴᴇɪɢʜʙᴏʀꜱ :)Congratulations to M & K on becoming first-time homeowners!This new home journey began wit...
07/14/2026

ᴘᴇᴍʙʀᴏᴋᴇ’ꜱ ɴᴇᴡᴇꜱᴛ ɴᴇɪɢʜʙᴏʀꜱ :)

Congratulations to M & K on becoming first-time homeowners!

This new home journey began with a phone call from a real estate agent in Pennsylvania who found me online. She was looking for someone she could trust to help her clients’ children find the perfect home here in Massachusetts. I’m so grateful she chose me. 🤍

I met M&K at my office in the fall. We talked about the home buying process and their wants and needs in a new home. They were open house champs, their weekend schedules were impressive! And after several months of searching, the right home finally came along, and it was well worth the wait.

It checked all the boxes, especially the fenced-in backyard for Rosie. 🐾 That beautiful spot is going to be the best place to enjoy mornings with coffee, gardening, reading and relaxing outdoors.

I love the moments when you get to see how excited and happy your clients are, and I got to see that at their final walk-through - it made my day! They are already busy, setting up contractors for some small improvements and making this house THEIR HOME! Cheers to your exciting new chapter in Pembroke 🤗

Sometimes the best real estate stories begin long before the property is listed for sale. Last September, I received a c...
07/07/2026

Sometimes the best real estate stories begin long before the property is listed for sale.

Last September, I received a call from a Realtor in Virginia. She wasn’t looking for just any agent, she was looking for someone she could trust to take care of her sister and brother-in-law as they prepared to sell their home here in Massachusetts.

Their condo had been on the market before and didn’t sell. So when we met, we didn’t just talk about listing it again, we talked about why it hadn’t sold, what the market was telling us, and most importantly, creating a strategy that made sense for both the market and their timeline.

Instead of rushing, we waited for the right moment.

When we listed this spring, everything came together. After a busy weekend of open houses, we accepted an offer with a timeline that fit their next chapter perfectly.

And can we talk about these sellers for a second? They truly set the standard. Their eye for design made every room shine, they responded to every question in record time, and were incredibly thoughtful throughout the entire process. They made it easy for buyers to fall in love with their home. 🤍

The best part? The buyer had been admiring this building since it was first built. This was the very first resale in the building, and she finally had the opportunity to purchase the home she’d been dreaming about—her very first home, just as K did when she bought it in 2024.

🗝️There really couldn’t have been a more perfect passing of the keys.

K & D, thank you for trusting my process, for your kindness, your flexibility, and for allowing me to be part of such an important milestone for your family. Clients like you are the reason I love what I do. ❤️

And to K who trusted me with her family from hundreds of miles away... thank you. There is no greater compliment than a referral, especially when it comes with the trust of someone you love.

Congratulations to both the sellers and the lucky new homeowner! 🏡✨

It’s been a long time coming... but you FINALLY have your keys! 🔑🎉Okay, so let’s rewind...I’ve helped Mike buy and sell ...
06/26/2026

It’s been a long time coming... but you FINALLY have your keys! 🔑🎉

Okay, so let’s rewind...

I’ve helped Mike buy and sell homes before, and every transaction has been smooth sailing. This one? Well... Let’s just say it didn’t exactly go according to plan. 😂

Back in February, Mike reached out and said he was ready to buy again, this time, a condo in the city. We toured two properties, and the second one was the one. Brand-new construction with a gorgeous kitchen and baths, private outdoor space, in-unit laundry, and an incredible rooftop deck. Offer accepted! Closing scheduled for May 1st!

Simple... right?

Not exactly. 😅

Construction delays. Final approvals. More delays. Then a few more for good measure. Every time we thought we were almost there... we weren’t.

But yesterday, after months of waiting, it finally happened! 🎉 Mike officially became the first homeowner in the building.

Was it worth the wait? Absolutely. Will we laugh about it someday? Definitely. (Maybe just not today. 😂)

Mike, congratulations! I don’t think anyone has earned their keys more than you have. You also win my completely unofficial “Most Patient Client in the History of the World” award. 🏆

I’m so incredibly happy for you and can’t wait to see you settle in. Wishing you so many great memories in your new home, I hope Riley gives it two paws up! 🐾❤️

Also, have to thank the incredible team behind the scenes, Matthew Attaya | NMLS # 404081 + Matthew R. Shechtman - you guys put in the extra extra on this one. Thank you 🙌🏼

P.S. I think we all deserve a vacation after this one. 😅

Coming back home  💛📍🏡Congratulations to the P family who closed on their new home (WITH WATER VIEWS!) last week. I was i...
06/22/2026

Coming back home 💛📍🏡

Congratulations to the P family who closed on their new home (WITH WATER VIEWS!) last week. I was introduced to them from a prior client and friend ☺️ (Thank you CH!) who said “My best friend is moving back to MA!” I can’t tell you how much it means, when you refer your loved ones, friends, family and colleagues, to me.

I “met” C on the phone since she was out of state and we toured properties via FaceTime - (yup that’s right! Can you imagine buying a home without walking through it? It does happen from time to time!) There were a couple homes along the way that didn’t quite work out but in May they were able to fly up for a jam packed day of in person showings. We found THE ONE, in an awesome neighborhood, with so much potential, and a view you dream about. This neighborhood is perfect for strolling and riding bikes and even has its own beach, playground and tennis court. My new little friend L is going to love her new home. 🩷 You guys are going to have the BEST Cape Cod summer all the while being closer to your family, friends and new jobs. Congratulations!! 🔑🤗🌊

Tuesday was so much more than a closing day.After so much time saving, sacrificing, and staying focused on a goal that m...
06/18/2026

Tuesday was so much more than a closing day.

After so much time saving, sacrificing, and staying focused on a goal that mattered deeply to her, this incredible woman officially became a homeowner. Not just for herself, but for her children. One of her biggest priorities was keeping them in the school district they know and love, and that dream became a reality.

There were moments along the way when the path felt impossible, but she never gave up. She kept showing up, kept planning, kept believing, and worked incredibly hard to make this happen.

Watching someone achieve a goal they’ve poured so much of themselves into is one of the most rewarding parts of what I do. I am beyond happy for her, so proud of her determination, and honored to have had a small role in this chapter of her story.

Congratulations on your very first home. Your children have an amazing example of what perseverance, dedication, and love look like. ❤️🏡

This might just be the best value you’ll find in one of the South Shore’s most sought after coastal towns…and it could b...
06/11/2026

This might just be the best value you’ll find in one of the South Shore’s most sought after coastal towns…and it could be yours!

39 Everett Street, Marshfield
Just $599,000 🔥🔥🔥

Come see it for yourself:
Friday 3:30 - 5:30
Saturday 12 - 2
Sunday 11 - 1

For more information or to schedule your private showing:
📲 508.364.7767

Just Listed in Marshfield! This Green Harbor neighborhood is close to everything!  1 Mile to the beach, marina, Lobster ...
06/10/2026

Just Listed in Marshfield! This Green Harbor neighborhood is close to everything! 1 Mile to the beach, marina, Lobster Pound, Coffee Shack, Green Harbor Yacht Club and just a few minutes by car to Jetty Restaurant, Brant Rock Market, restauants, ice cream and more. Just in time for SUMMER!

39 Everett Street, Marshfield MA
Offered at $599,000!!!!!

3 Bedrooms
1-1/2 Baths
1,406 Square Feet
Fenced backyard with large deck
Storage shed
Partially finished space in basement, gym, workshop, storage - you choose!

Join me at our Open Houses:
Friday 6/12 3:30p - 5:30p
Saturday 6/13 12p - 2p
Sunday 6/14 11a - 1p

Or to schedule your private showing, contact me at 508.364.7767 or [email protected]

Smell that salty air! 🌊

Listed by Andrea Mongeau
Keller Williams Realty Signature Properties

Address

171 Washington Street
Norwell, MA
02061

Opening Hours

Monday 8am - 8pm
Tuesday 8am - 8pm
Wednesday 8am - 8pm
Thursday 8am - 8pm
Friday 8am - 8pm
Saturday 8am - 8pm
Sunday 8am - 8pm

Telephone

+15083647767

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