If you are searching for the best realtor for short-term rentals in San Leon, TX, you are really asking a harder question: can a bayfront investment property here actually pencil out, and who will tell you the truth if it cannot. San Leon is not a resort town with a polished rental machine behind it. It is an unincorporated fishing village on Galveston Bay where oyster and shrimp boats still drive the local economy, where Gilhooley's and Topwater Grill pull weekend traffic from all over Houston, and where the rules that govern your rental are very different from the ones a block away in Kemah.
What the Numbers Actually Say Before You Underwrite
Investors get burned in San Leon by treating a thin market like a deep one. Closed-sale volume here is small enough that a single month can swing the median by tens of thousands of dollars, so any pro forma built on one month of data is fiction.
| Signal | Current reading | Why it matters to an investor |
|---|---|---|
| Zillow Home Value Index | $247,162, down 4.5% year over year (as of 6/30/2026) | The trend line, not the headline. Values have softened. |
| Median active list price | $344,950 across 56 single-family listings (HAR, July 2026) | Sellers are asking well above the index. Expect a negotiating gap. |
| Median list price per sq ft | $192 (Movoto, Aug 2026) vs. $256 countywide (FRED, June 2026) | A real per-foot discount to Galveston County. |
| Days on market | 91 days on active San Leon listings, 64 days countywide median | Slow. Budget carry, and use the time as leverage. |
| Long-term rent | $1,425 average, $1,925 for houses (Zumper, Aug 2026) | Your floor scenario if nightly demand disappoints. |
That last row is the one that separates disciplined investors from hopeful ones. Underwrite the property so it survives on long-term rent, then treat nightly income as the upside. If the deal only works at a nightly rate you have not personally verified against live comparable listings, it is not a deal yet.
The Regulation Question That Actually Decides Your Return
San Leon is a census-designated place in unincorporated Galveston County, not a city. Texas counties operate without general zoning authority, and Galveston County officials have publicly acknowledged they hold very little regulatory power in unincorporated areas. That is the single biggest structural difference between a San Leon rental and one across the water.
| Jurisdiction | Short-term rental posture | Investor impact |
|---|---|---|
| San Leon (unincorporated Galveston County) | No city registration, no city permit fee, no city occupancy inspection | Lowest compliance friction in the area. State and county hotel taxes still apply. |
| Kemah | Registration required under Ordinance 1198, roughly $450 per year, on-site inspection within 30 days setting occupancy and parking caps, 7% hotel occupancy tax filed quarterly even at zero | Higher cost, inspection risk, quarterly filing discipline required. |
| City of Galveston | Annual registration around $250 due December 31, $500 late fee, 24/7 local contact with a one-hour response standard, violations charged as Class C misdemeanors, registration number required on listings | Most enforcement exposure of the three. |
| Dickinson | Vacation rentals handled through the city's zoning code rather than a standalone ordinance | Call the city directly before assuming a rental use is permitted. |
Two cautions, and I would rather lose a deal than skip them. First, "no short-term rental ordinance" is not "no rules." Floodplain permitting in unincorporated Galveston County is real and enforced, deed restrictions and MUD rules still bind a property, and the county has actively explored expanding its ordinance authority. Second, the absence of regulation today is a current condition, not a permanent one. Buy a property that works even if a registration regime arrives.
The Costs Out-of-Area Investors Underwrite Wrong
| Cost item | What outsiders assume | The San Leon reality |
|---|---|---|
| Windstorm coverage | Included in the homeowners policy | Galveston County is a first-tier coastal county. Wind and hail typically ride on a separate policy, often through TWIA. |
| TWIA eligibility | Automatic | Requires denial by at least one authorized insurer plus windstorm certification (WPI-8 from TDI, or WPI-8-C from TWIA). |
| Renovations | A value-add lever | An uncertified renovation can jeopardize windstorm eligibility. Confirm certification before you swing a hammer. |
| Flood insurance | Optional | Structures in specified flood zones built or substantially altered on or after September 1, 2009 must show proof of flood insurance to qualify for TWIA. |
| Permits | A city formality | The county requires floodplain permits, with zone-specific documents (floodproofing certificates, and in V zones, piling depth and breakaway wall letters). Allow a week or more. |
| Carry cost | 30 days | Listings sitting near three months means your holding math needs slack. |
The practical move is to price insurance before you write the offer, not during the option period. On the Texas coast, a wind and flood quote can change a cap rate by a full point, and by the time you are three days from closing you have lost the leverage to renegotiate.
Tradeoffs Worth Naming Out Loud
| Option | Upside | Trade-Off |
|---|---|---|
| The unregulated upside | No permit fee, no occupancy inspection, no quarterly city filing, and no revocation risk from a city licensing board. | No city code enforcement backing you up either, and neighboring uses in an unzoned area can change without warning. |
| The value entry point | A genuine per-square-foot discount to the county, with bay proximity and a real visitor draw in the seafood and distillery scene. | A softening value index and long marketing times. This is not a quick-flip market. |
| The character of the place | San Leon has an authentic, unpolished coastal identity that guests actually seek out, anchored by Topwater Grill at April Fool Point, Pier 6, Gilhooley's, and Railean Distillery, the first legal rum distillery in Texas. | Housing stock is older and uneven. Inspection quality matters more here than almost anywhere else on the mainland. |
Zoning for the area runs through Dickinson ISD, with San Leon Elementary feeding Barber Middle School, McAdams Junior High, and Dickinson High School. That matters less for a nightly rental and a great deal for the long-term tenant who becomes your fallback plan. Investors who ignore school zoning on the theory that they will never rent long term are the same investors who end up carrying a vacant property through a soft season.
One more piece of guidance that has saved clients real money here: buy the location before you buy the finish level. San Leon sits roughly 40 miles southeast of Houston on Galveston Bay, and proximity to the bay, to a working marina, and to the restaurant cluster does more for occupancy than a renovated kitchen ever will. Cosmetic upgrades are the cheapest thing to fix after closing. Bay access, elevation, and the parcel itself are not fixable at any price.
Why the Mandie McMillan Team Is Built for the Investor Conversation
Mandie McMillan has spent 26 years in this business and 50 years living in Galveston County. She was born and raised in La Marque, the center of the county, and has lived in her current League City home for 18 years. That is not a marketing line. It is the difference between an agent who has watched San Leon through multiple storm cycles and insurance markets and one who just pulled the listing off the MLS this morning.
In 2025 the team closed 75 sides and $22,127,458 in production volume, with Mandie personally closing 30 sides and $11,676,748. Across just six producing agents, that is roughly 12.5 closed sides and $3.7 million per agent. You get an experienced advisor who knows your file, not a lead handed off inside a forty-agent funnel. Mandie is a RE/MAX International Hall of Fame inductee and a repeat RE/MAX Chairman's Club and Platinum Club honoree, and she serves as 2026 Chair of the Texas City-La Marque Chamber of Commerce.
The team's Client for Life approach means we expect to be your advisor across every property you buy here, in the same tier as your CPA or attorney. On an investment purchase, that shows up as a willingness to talk you out of a bad one.
Ready to run real numbers on a San Leon property? Contact The Mandie McMillan Team at RE/MAX Coastal, and bring the address you are curious about.
