About
GrinnMcKee Realty Group #SistersInBusiness
We are Heidi McKee and Tammy Grinn, real estate agents with GrinnMckee Realty Group which is a team with the Brokerage firm of Keller Williams in Rockwall. We have helped clients buy and sell in Collin, Rockwall, Kaufman, Hunt, and Tarrant counties.
Together, we are 2 local agents covering 4 communities: Rockwall, Forney, Mesquite and Terrell.
What is Your Home worth?
Get a free estimate of what your home could sell for, then talk it through with Heidi if you want a closer look.
No pressure. No guesswork. Just smart tools and an advisor who knows Rockwall by heart.
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AI Home Search
Describe the home you're picturing in plain English and let AI find the match. No endless filters, no forms.
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Instant Home Value
A clear, data-backed estimate of your home's worth in seconds, so you know where you stand before you make a move.
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Neighborhood Guides
A closer look at the neighborhoods Heidi knows best, and what makes each one different.
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From the Blog
Straight-talk market updates and advice for Rockwall buyers and sellers, without the jargon.
Tools are only half the story. None of them replaces a person who picks up the phone, answers the hard questions, and tells you the truth even when it costs a sale. That part is Heidi, and it always will be.
Featured communities
From Forney and Mesquite to Terrell, every neighborhood around Rockwall has its own character. Explore the communities Heidi and Tammy know best.
GrinnMcKee Reviews
Every client relationship starts with listening. Here's what working with Heidi looks like, in their clients' own words.
Heidi worked so SO hard to find us the perfect house and we thought we knew better and came in with a few listings then finally we listened to her and she showed us the house we wound up buying. Then she worked it hard to get the deal done too. She absolutely knows the region and the area and my advice would be just straight up listen to her, she’s probably right about the house she’s showing you.
Latest news
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Home BuyingRockwall County Home Buying Process: What to Expect
Buying a home in Rockwall County involves several key steps — from pre-approval to closing day. Heidi McKee of GrinnMckee Realty Group walks you through the entire process across Rockwall, Forney, Mesquite, and Terrell.
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Home Buying TipsHome Inspection Tips for Rockwall County Buyers
A thorough home inspection is one of the most important steps in buying a home. Realtor Heidi McKee shares expert tips to help Rockwall County buyers navigate the process with confidence.
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Buyer TipsNegotiating Your Home Purchase in Rockwall County
Negotiating your home purchase in Rockwall County takes local knowledge and a clear strategy. Heidi McKee of GrinnMcKee Realty Group shares practical tips for buyers in Forney, Rockwall, Mesquite, and Terrell.
Rockwall was founded in 1854, and Rockwall County is the smallest county in Texas at just 147 square miles. The City of Rockwall’s history page tells the full story.
The Texas Historical Commission’s marker for Rockwall County notes it is the smallest of Texas’ 254 counties.