Tammy McMahon

Tammy McMahon

REALTOR® / Licensed Real Estate Agent at Realty ONE Group Coastal | Summerville
Realtor: 113869
  •   5   (56 reviews)

Tammy's sales performance at a glance

See how Tammy has performed in the last 12 months on RateMyAgent*

8
Reviews
3
Properties for sale
10
Sold properties
$333k
Average sale price
$4.1m
Total sales value

*Includes all properties sold (last 12 months) where the agent was a part of the transaction and published on ratemyagent.com. It may not be complete and can exclude off-market, private sales and undisclosed pricing and sold dates. Contact agent for full sales history.

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    Asks all customers for reviews whether positive or negative which may result in a more representative star rating.

  • priceExpertbadge

    Consistently meets client expectations for property purchase price.

About Tammy

As a top Charleston Realtor, I provide exceptional service to families looking to build their dream home, sell, buy or relocate to the greater Charleston area with the highest level of expertise, integrity, and honesty while maintaining great communication throughout the entire process.

Tammy's reviews

  5  
Tammy has 56 reviewsacross 20 different locations, showing 6.
Review Tammy
Tammy's qualities as told by our client reviews: friendly, responsive, dedicated, empathetic, clear communication, supportive, local expert.
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Buyer review
She was literally sent from God
2 months ago
She was literally sent from God

Tammy’s communication is truly top tier. During the final week before our closing, we faced a major hurdle when my credit score unexpectedly dropped by 75 points. It was a stressful time for our family, but Tammy never once made us feel alone in the process. She responded to my texts even after business hours, guided me on what to say in my goodwill letter, and did everything she could to help keep our closing on track. she even prayed with us. That moment meant so much to us and showed just how much she genuinely cares about the families she works with. Tammy went above and beyond in ways most realtors wouldn’t. Her dedication, patience, and heart for helping people truly set her apart. I would recommend her a million times over. I truly believe God placed Tammy in our lives during this journey for a reason. As she always says, “God gets the glory,” and I believe He worked through her to help our family make it to the finish line. We are forever thankful for her.

Buyer review
Remarkable
3 months ago
Remarkable

I’ve worked with Mrs.Tammy McMahon on five transactions total—selling two homes and buying three—and I honestly wouldn’t trust anyone else. Every single time, she’s been knowledgeable, responsive, strategic, and genuinely invested in getting us the best outcome for my family. On the selling side, she knew exactly how to price, market, and negotiate to maximize value. On the buying side, she was patient, honest, and incredibly sharp at spotting issues and opportunities we would’ve missed. She made stressful decisions feel manageable and complex processes feel clear. Always advocating for us and putting out fires without hesitations. She makes the process smooth, keeps stress low, and consistently delivers great results. Beyond her expertise, she’s just a great human to work with—calm under pressure, always available, and truly in your corner. After five deals together, I can say with confidence she’s not just a great realtor, she’s a trusted advisor(friend). I recommend her without hesitation.

Seller review
The most helpful realtor
6 months ago
The most helpful realtor

Tammy is the most helpful and knowledgeable realtor you could ever ask for. Her communication is next level which is the best service a realtor can provide since selling a home is very stressful!

Buyer review
More than a realtor
7 months ago
More than a realtor

When I think of Tammy, I don’t think of her as my realtor. Let me explain. Yes, of course, she helped us seamlessly by a house within a very, very short time frame. She guided us along the way as first time home owners and helped us secure our first dream home among multiple bidders. She counseled us throughout the process of closing. She reminded us to submit our application in time for lower taxes. Among many other things. BUT, I still don’t think of her as our realtor, because she’s more than that. She’s a genuine friend who reaches out and checks on us. She cares about us as people. She’s always available for questions and never hesitates to connect us with local businesses when we need them. She’s a realtor who is a genuinely good person and who cares about the people she works with. How could you want anything more from someone involved in such a big decision? We are so grateful for her!

Buyer review
Greatest Realtor
8 months ago
Greatest Realtor

Mrs Tammy was referred to me by a friend. She is a great realtor and all around great person. She is realtor who is going to be concerned about your well being and make sure you’re taken care of well after the house process is over. She always tells me “ Shay I’m not going anywhere”. That’s a promise she has kept after helping me through the process of buying my first home. I know she is someone I can call on if I need help or advice. 10/10 recommend her to anyone!!

Buyer review
A True Blessing
8 months ago
A True Blessing

Tammy was a referral to us from very close friends who built their first home with her. Tammy came into our life and completely believed in our dream to be homeowners. Her patience, honestly, guidance, integrity, morality, and drive is what made the process so easy. She set us up for a world of success. It was never about the sell for her. She treated my family like her family and always put our best interest first. She went above and beyond to take her time and answer questions for us even if we asked the same question 200 times. With the same enthusiasm, patience, and kindness she met every need. I would recommend Tammy a million times. She was an advocate for what we wanted, very knowledgeable, prepared us for life after buying the home, and still keeps in contact with us to check how things are going for us as we settle in. Praying her business continues to thrive!

Show all 56 reviews
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Tammy's properties

Tammy has 3 properties for sale and sold 10 properties in the last 12 months, showing 4, sorted by most recent activity

SoldMay 15, 2026
$235,760
133 Fern Lane
Summerville SC 29483
3
3
2
Condo
Listing courtesy of Lennar Carolinas, LLC
SoldMay 14, 2026
$243,000
144 Townsend Way
Summerville SC 29483
2
2
Other
Listing courtesy of Keller Williams Realty Charleston
SoldMay 13, 2026
$190,000
405 Sunnyside Way
Summerville SC 29485
3
2
Condo
Listing courtesy of Carolina One MPN
SoldApr 15, 2026
$699,000
5134 Hyde Park Village Lane
North Charleston SC 29405
3
3
1
Single-Family
Listing courtesy of Carolina Elite Real Estate
Show all 13 properties

Tammy's sold properties

Tammy has sold 10 properties in the past 12 months, showing 4.

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Property imageAddressBedroomsBathroomsCarparksProperty TypeClosing PriceDate Sold
133 Fern Lane, Summerville, SC, 29483
133 Fern Lane
Summerville SC 29483
3
3
2
Condo$235,760May 15, 2026
144 Townsend Way, Summerville, SC, 29483
144 Townsend Way
Summerville SC 29483
2
2
Other$243,000May 14, 2026
405 Sunnyside Way, Summerville, SC, 29485
405 Sunnyside Way
Summerville SC 29485
3
2
Condo$190,000May 13, 2026
5134 Hyde Park Village Lane, North Charleston, SC, 29405
5134 Hyde Park Village Lane
North Charleston SC 29405
3
3
1
Single-Family$699,000Apr 15, 2026

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