Looking for the most trusted real estate agent in Cobblestone, Texas City, TX is a different question than looking for the busiest one. Cobblestone is a young community, roughly 159 homes with a median build year of 2022, still adding inventory through Adams Homes, Colina Homes, and Cyrene Homes. In a neighborhood this new, trust is not a review count. Trust is whether your agent tells you three specific things before you ask: which school district you are actually in, what the MUD does to your tax bill, and where the WPI-8 certificate is. Two of those three surprise almost every buyer here.
Trust in a 2022 community is a disclosure test, not a popularity test
| Trust signal | What it actually proves | How much weight to give it |
|---|---|---|
| Five-star review count | Someone was willing to leave a review, verified or not | Low on its own, since open platforms accept reviews from non-clients |
| HAR Client Experience Rating | The rater was a client in a verified closed MLS transaction | High, because the invitation is generated off the closed sale |
| TREC license status | The license is active, current, and properly sponsored | Baseline, and it takes two minutes to check |
| TREC disciplinary record | Whether there are public actions on file in the past ten years | High, and almost nobody checks it |
| Volunteered bad news | The agent raised the school zoning and the MUD rate before you did | The highest signal available, and the hardest to fake |
That last row is the whole article. The other four you can verify from your phone. The fifth only shows up in how an agent behaves in the first conversation, and in Cobblestone there are two specific pieces of bad news worth watching for.
The two Cobblestone facts most buyers learn too late
The first is the school district. A Texas City mailing address does not put you in Texas City ISD. Cobblestone is zoned to Dickinson ISD, confirmed on the subdivision's own tax roll, which carries a Dickinson ISD school levy. That is not a downgrade. Dickinson ISD earned a B in the 2024-25 TEA accountability ratings while Texas City ISD earned a C, so the surprise generally works in a Cobblestone buyer's favor. But it changes your campuses entirely: Hughes Road Elementary, then Barber Middle for grades 4 and 5, then Dickinson High School. Because Dickinson ISD runs three separate junior highs between Barber and the high school, always get your specific grades 6 through 8 campus confirmed in writing for your exact address. Do not let anyone guess it, including us.
The second is the tax rate. Cobblestone is inside Galveston County MUD No. 31, which carried a rate of 0.80 per $100 in the 2025 Galveston CAD rate schedule. Stack that on the City of Texas City, Dickinson ISD, Galveston County, College of the Mainland, and county road and flood levies and you land near 3.0% combined. That is a normal number for a new master-planned community with district-financed infrastructure, and it is not a scandal. It is only a problem when nobody mentions it and your lender's escrow estimate comes in $200 a month higher than you planned.
| Metric | Cobblestone | Source and vintage |
|---|---|---|
| Single-family homes | 159 | HAR subdivision data, Aug 2026 |
| Median size and lot | 1,906 sq ft on 7,256 sq ft | HAR, Aug 2026 |
| Median year built | 2022 | HAR, Aug 2026 |
| Median market value | $292,860 | HAR, Aug 2026 |
| Median sold price per sq ft | $155.40 | HAR, 2025 median |
| Value range | $246,000 to $334,000 | HAR, Aug 2026 |
| Active vs recently sold | 2 active, 114 sold | HAR, Aug 2026 |
| HOA dues | About $450 per year, Cobblestone Community Association | HAR community materials, 2026 |
| Combined tax rate | Roughly 3.0%, including an 0.80 MUD rate | Galveston CAD 2025 rate schedule |
| School district | Dickinson ISD, rated B for 2024-25 | Galveston CAD levy and TEA ratings |
| Texas City median sale price | $306,730, down 0.7% year over year | HoustonProperties, Aug 8, 2026 |
| Texas City median days on market | 114 days | HoustonProperties, Aug 8, 2026 |
| Galveston County median days on market | 72 days | FRED, July 2026 |
One more Cobblestone advantage nobody advertises. Every home here was built in the TWIA designated catastrophe area, which covers all of Galveston County, and since January 1, 1988 new construction in that area needs a WPI-8 certificate of compliance from the Texas Department of Insurance to stay eligible for windstorm coverage. With a median build year of 2022, essentially every Cobblestone home should have a current WPI-8 on file, which is a real, checkable advantage over Texas City's older housing stock. Ask for the certificate, and ask again after any roof work, because roof replacement is one of the triggers that requires a new one.
How to verify any Texas agent in ten minutes
| Step | Where | What you learn |
|---|---|---|
| License check | TREC License Holder Search | Active status, license number, expiration, sponsoring broker |
| Disciplinary check | The disciplinary actions button on that same TREC record | Public actions on file, or a message confirming none in the past ten years |
| Verified client ratings | HAR Client Experience Rating on the agent's profile | Ratings from clients in closed MLS transactions, across four categories, on a five-star scale |
| Comment integrity | The comments under that rating | Once submitted, comments cannot be modified or deleted, and agents opt in to all of their ratings or none |
| Local proof | Their actual closings near your ZIP | Whether they work this market or just advertise into it |
The HAR rating deserves a note, because it is the one consumers underuse. HAR generates the survey when a listing status changes to sold, the agent has 15 days from closing to supply the client's contact information or the transaction is automatically opted out, and the client then has 15 days to respond. Agents cannot cherry-pick which ratings display. They can post a public rebuttal, and HAR staff will phone a client directly to verify a rating when abuse is suspected. That is a materially different instrument than an open review page, and it is free to read.
The honest tradeoffs of buying in Cobblestone
| Option | Upside | Trade-Off |
|---|---|---|
| Buy new in Cobblestone | 2022-era construction, a current WPI-8, builder warranty coverage, Dickinson ISD zoning, and a low $450 annual HOA. | A combined tax rate near 3.0% because of MUD No. 31, and a still-building neighborhood with construction traffic. |
| Buy resale in older Texas City | A lower tax rate without a MUD line, mature streets, and more negotiating room in a market averaging 114 days. | Older systems, roofs that may not carry a current WPI-8, and mostly Texas City ISD zoning rather than Dickinson ISD. |
| Wait for a better price | Texas City's median sale price is down 0.7% year over year, and time is currently on the buyer's side. | Only 2 active Cobblestone listings against 114 recent sales, so waiting can mean nothing to buy at all. |
Why locals trust The Mandie McMillan Team here
Trust in Texas City is not something you can arrive with. Mandie McMillan was born and raised in La Marque, next door, in 1976, a 50-year resident of this county. She has been licensed since 2000, 26 years in the business. She has served four years on the executive board of the Texas City-La Marque Chamber of Commerce and is listed on the chamber's own board page as its 2026 Chair-Elect, work focused squarely on small business growth and the economic development of Texas City and La Marque. She was also 2017 President of the Bay Area chapter of the Women's Council of Realtors and 2018 Texas District Vice President.
The credentials back it up: RE/MAX International Hall of Fame inductee, a repeat RE/MAX Chairman's Club and Platinum Club honoree, with SRS and CLHS designations. In 2025 the team closed 75 sides and $22,127,458 in volume, with Mandie personally closing 30 sides and $11,676,748, across just 6 producing agents. That is roughly 12.5 sides and about $3.7 million per agent, which is depth rather than headcount.
We call it Client for Life, and we mean it literally. You should keep a realtor the way you keep a CPA or an attorney. If you are buying or selling in Cobblestone, contact The Mandie McMillan Team at RE/MAX Coastal, and hold us to the standard in this article: we will raise the school zoning, the MUD rate, and the WPI-8 before you have to ask.
