Tammy McMahon

Tammy McMahon

REALTOR® / Licensed Real Estate Agent at Realty ONE Group Coastal | Summerville
Realtor: 113869
  •   5   (59 reviews)

Tammy's sales performance at a glance

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

9
Reviews
3
Properties for sale
8
Sold properties
$261k
Average sale price
$2.7m
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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    Recognized for being in the Top 20% for customer satisfaction.

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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 59 reviewsacross 20 different locations, showing 6.
Review Tammy
Tammy's qualities as told by our client reviews: friendly, responsive, empathetic, dedicated, supportive, clear communication, local expert.
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Seller review
Tammy was absolutely wonderful in helping us sell our condo!
about 1 month ago
Tammy was absolutely wonderful in helping us sell our condo!

Tammy was such a blessing in selling our condo! She is amazing at communication during the selling process! She helped us keep reasonable expectations in a bad selling situation. And she gracefully walked us through all the hard decisions we needed to make in order to sell. I am so impressed at the amount of work she put into selling our place! I'm so thankful we had Tammy as our realtor!

Seller review
Repeat Customer!
about 1 month ago
Repeat Customer!

I have been lucky enough to work personally and professionally with Tammy for the better part of 10 years. That includes not only using her as my agent to buy and sell over and over, but seeing how she cares about her clients day in and out as a mortgage lender. Tammy goes above and beyond handling every aspect of the process so the burden is taken off the client. She works hard and has her client’s needs at the top of every stage. I will personally use Tammy again. Over and over.

Buyer review
    Above and Beyond Every Step of the Way
about 1 month ago
Above and Beyond Every Step of the Way

We couldn’t have asked for a better agent! From start to finish, Tammy made the home-buying process smooth, stress-free, and enjoyable. She listened to exactly what we were looking for and helped us find the perfect home for our family. Her knowledge, patience, and dedication were truly outstanding. We are so grateful for all her hard work and highly recommend Tammy to anyone looking to buy or sell a home!

Buyer review
She was literally sent from God
4 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
5 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
7 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!

Show all 59 reviews
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Tammy's properties

Tammy has 3 properties for sale and sold 8 properties in the last 12 months, showing 4, sorted by most recent activity

SoldMay 26, 2026
$394,900
4810 Hawkins Dr
North Charleston SC 29485
3
3
2
Single-Family
Listing courtesy of Valor & Vine Realty
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
Single-Family
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
Show all 11 properties

Tammy's sold properties

Tammy has sold 8 properties in the past 12 months, showing 4.

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Property imageAddressBedroomsBathroomsCarparksProperty TypeClosing PriceDate Sold
4810 Hawkins Dr, North Charleston, SC, 29485
4810 Hawkins Dr
North Charleston SC 29485
3
3
2
Single-Family$394,900May 26, 2026
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
Single-Family$243,000May 14, 2026
405 Sunnyside Way, Summerville, SC, 29485
405 Sunnyside Way
Summerville SC 29485
3
2
Condo$190,000May 13, 2026

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