Homes for Sale/Galveston County/Galveston/Sea Isle 1
Active MLS #89189557 · 128 days on market

21818 San Luis Pass Road

Galveston, TX 77554
Subdivision  ·  Sea Isle 1
List Price
$1.15M
$336/SF
Beds
4
Baths
5
Sq Ft
3,422
Built
2025
Lot
0.14 ac
Garage
1-car
County
Galveston
Tax Rate
0.57%

Schools

§ 03
District
Elementary GISD OPEN ENROLL N/R
Middle GISD OPEN ENROLL N/R
High BALL H S CCMR 75% · Grad 96% C
TEA accountability ratings reflect 2024–25 where available. School attendance zones are subject to district redistricting — confirm directly with the district before making a school-based decision.

Overview

§ 01

Experience elevated coastal living in this stunning home located in the highly sought-after community of Sea Isle on Galveston’s West End. This 4/4.5 thoughtfully designed property features ensuite bathrooms for every bedroom, providing the perfect blend of comfort, privacy, and functionality for family and guests. Designed to maximize the breathtaking, unobstructed views of the Gulf of Mexico, the home is filled with natural light and expansive windows. A spacious open-concept living/dining area centers around a beautiful fireplace and seamlessly flows into the show-stopping kitchen, complete with an large island, tons of cabinetry, and designer finishes throughout. Luxurious primary suite offers its own private retreat with spectacular Gulf views. A second living area upstairs features even more incredible water views along with a large built-in wet bar. Secondary upstairs bedroom is outfitted with custom built-in bunk beds. Double front decks offer over 600sf of outdoor living!

Features

§ 02

Interior

  • Wet Bar
  • Breakfast Bar
  • Built In Bunk Beds
  • Double Vanity
  • En Suite Bathroom
  • High Ceilings
  • Jetted Tub
  • Kitchen Island
  • Kitchen Family Room Combo
  • Bath In Primary Bedroom
  • Pots And Pan Drawers
  • Pantry
  • Self Closing Cabinet Doors
  • Self Closing Drawers
  • Soaking Tub
  • Separate Shower
  • Two Bedrooms Up
  • Two Bedrooms Down

Exterior & lot

  • Balcony
  • Covered Patio
  • Deck
  • Paved Driveway
  • Porch
  • Patio
  • Private Yard
  • Views
  • Backs To Greenbelt Park
  • Pond On Lot
  • Side Yard
  • Covered
  • Roof: Composition
  • Additional Parking
  • Attached
  • Driveway
  • Garage
  • Association

Community

  • Beach Rights
  • Beach Access
  • Boat Ramp
  • Sport Court
  • Picnic Area
  • Playground
  • Pickleball
  • Pool
  • Tennis Courts
  • Smoke Detectors
  • Beach
  • Gulf
  • Water
  • Style: Traditional

Property Details

§ 03 · Full MLS record

Property

Property Type Residential
Property Sub Type Detached
Architectural Style Traditional
Year Built 2025
Year Built Source PublicRecords
New Construction No

Building

Stories 2
Levels Two
Living Area 3,422 sq ft
Living Area Source Appraiser
Building Area Total 3,422 sq ft
Construction Cement Siding
Roof Composition

Rooms & Baths

Bedrooms 4
Bathrooms (total) 5
Bathrooms Full 4
Bathrooms Half 1
Rooms Total 16
Fireplaces 1
Fireplace Features Electric

Interior

Interior Features Wet Bar, Breakfast Bar, Built In Bunk Beds, Double Vanity, En Suite Bathroom, High Ceilings, Jetted Tub, Kitchen Island, Kitchen Family Room Combo, Bath In Primary Bedroom, Pots And Pan Drawers, Pantry, Self Closing Cabinet Doors, Self Closing Drawers, Soaking Tub, Separate Shower, Two Bedrooms Up, Two Bedrooms Down, Tub Shower, Upper Level Primary, Walk In Pantry
Flooring Engineered Hardwood, Tile
Appliances Dishwasher, Electric Oven, Electric Range, Free Standing Range, Disposal, Microwave, Dryer, Refrigerator, Washer
Laundry Washer Hookup, Electric Dryer Hookup
Windows Window Coverings
Security Smoke Detectors

Exterior

Exterior Features Balcony, Covered Patio, Deck, Paved Driveway, Porch, Patio, Private Yard
Patio / Porch Balcony, Covered, Deck, Patio, Porch
Pool Private No
Pool Features Association
View Yes
View Type Beach, Gulf, Water

Parking & Garage

Garage Spaces 1
Attached Garage Yes
Parking Features Additional Parking, Attached, Driveway, Garage

Lot

Lot Size (acres) 0.1377
Lot Size Source Appraiser
Lot Features Views, Backs To Greenbelt Park, Pond On Lot, Side Yard
Direction Faces South

Location

County Galveston
MLS Area Major 33
MLS Area Minor West End
Subdivision Sea Isle 1
Postal Code 77554

Utilities

Heating Central, Electric
Cooling Central Air, Electric
Water Source Public
Sewer Public Sewer
Energy Efficient Thermostat

HOA / Association

HOA Yes
HOA Fee $274
HOA Fee Frequency Annually
HOA Name Sea Isle POA
Fee Includes Common Areas, Recreation Facilities
Amenities Beach Rights, Beach Access, Boat Ramp, Sport Court, Picnic Area, Playground, Pickleball, Pool, Tennis Courts

Taxes, Terms & Disclosures

Tax Annual Amount $6,606
Tax Year 2025
Tax Rate (est.) 0.57%
Parcel # 6376-0000-0106-000
Legal Description ABST 121 PAGE 19 LOT 106 SEA ISLE SEC 1
Listing Terms Cash, Conventional
Lease Considered No
Disclosures Seller Disclosure

Room Layout

§ 04 · 16 rooms · MLS-supplied

Main level · 10

Porch 40'6"x 8'8"
Dining Room 13'3"x 7'8"
Kitchen 11'5"x 16'1"
Living Room 23'7"x 27'4"
Utility Room 5'3"x 6'1"
Bedroom 11'1"x 17'6"
Bathroom 12'3"x 6"0"
Bedroom 10'11"x 17'6"
Bathroom 12'3"x 5'11"
Half Bath 4'11"x 5'9"

Second level · 6

Porch 35'4"x 8'8"
Family Room 21'2"x 19'1"
Primary Bedroom 13'5"x 17'2"
Primary Bathroom 13'5"x 12'9"
Bedroom 14'2" x 10'9"
Bathroom 7'0"x 4'11"

MUD Disclosure (§49.452)

§ 03 · Data moat
● §49.452 Notice
Not in archive
This MUD is not yet in our §49.452 archive. We'll add it on request.

Texas Water Code §49.452 requires districts to publish annual notices with tax rate, bonded indebtedness, and assessed value. Most Harris-area MUDs publish these; a handful managed by Inframark do not.

Request this notice
● What this tells you

The §49.452 notice is the only public document that lists a MUD's exact tax rate, outstanding bond debt, and the assessed value used to compute your taxes — direct from the district, not the MLS. If the district is newer or has more bonds outstanding than its neighbors, your effective tax rate will be higher here than just across the street.

Listing's rolled-up MUD rate Resolved MUD jurisdiction not mapped Match confidence

Taxes & Cost of Ownership

§ 04
● Estimated monthly payment
$7,450
30-YR FIXED · ADJUST ASSUMPTIONS BELOW
%
%
Principal & interest$6,899 Property tax$551 Homeowners insuranceTBD
Subtotal (P&I + Tax) $7,450
Yearly HOA fee $274

Illustrative only, not a quote. P&I assumes the values entered above. Insurance and HOA dues vary — consult licensed lender and insurance agent for accurate quote.

● Effective tax rate · 3-year history
1.6952%
ALL 5 TAXING DISTRICTS · 2025 BILL
202320242025
MUD
→ stable
School
0.84%
→ stable
City
→ stable
County
0.32%
→ stable
Other districts
0.53%
→ stable

HOA & Community

§ 05
● HOA details
$274
ANNUALLY
Association nameSea Isle POA Management co. Website Phone Cert on filepending
Fee includes
CommonAreas · RecreationFacilities
● Community amenities
bank
ATM · 0.4mi
ATM · 4.4mi
Circle K ATM · 5.1mi
gym
Seek Peace Yoga Galveston · 1.1mi
Gymaica Fitness · 5.1mi
park
· 2.5mi
· 2.6mi
· 3.6mi
grocery
Seven Seas Market · 4.4mi
Valero · 5.1mi
Circle K · 5.1mi
police_station
Jamaica Beach Police · 5.2mi
place_of_worship
Mary, Star of the Sea Church · 5.2mi
West Isle Presbyterian Church · 8.2mi
West Isle Church · 8.2mi

Broadband & Connectivity

§ 06
Broadband not mappedWe have not yet resolved FCC provider data for this block.

Environmental Risk

§ 08
V
FEMA Zone
Zone VE · Coastal High Hazard
Coastal wave-action hazard zone. Flood insurance required.
PANEL 48167C BASE FLOOD ELEV. 15.0 FT SFHA YES SOURCE 48167C_STUDY1
🌡 Heat days >95°F
6 days/yr above 95°F
Plus 0 days above 100°F. NOAA station records, 2016-2025 average.
💨 30-day air quality
AQI 44 · Good
Average daily AQI for the 30 days ending 2026-02-28. EPA AQS county monitors. Higher = worse.
🌵 Drought (current)
D1 · Moderate
US Drought Monitor county reading, week of 2026-09-15.
Sources: FEMA NFHL · NOAA GHCN-Daily · EPA AQS · US Drought Monitor. Climate rollup last computed Sep 23, 2026.

Recent Comparable Sales

§ 09
4 comparable sales nearbyAddress-level sold detail is available to registered users. Reach out to Allen for the full comparable-sales report.

Subdivision & Master Plan

§ 10
● Master plan
Sea Isle 1
TIER: SUBDIVISION
Subdivision name (MLS)Sea Isle 1 City · ZIPGalveston · 77554 CountyGalveston Listings in subdivision93 Active now15 Sold (last 12 mo)6 Curated amenities20
● Year-built distribution
1960s 1 1970s 1 1975s 2 1985s 1 1995s 3 2000s 3 2010s 1 2015s 1 2025s 1

Fire Protection

§ 11
Nearest station
Galveston Fire Department Station 8
Distance
0.2 mi
Straight-line from listing
ISO rating
Future data point
Avg. response
From incident log (future)

Neighborhood Demographics

§ 12 · Census tract 48167726102 · ACS 2023
Median HH income
$82,955
ACS 2023
Median home value
$511,700
Census self-report
Owner-occupied
27%
2,829 housing units
Bachelor's+
51%
Adults 25+
Median age
63.1
Population 1,431
Work from home
4%
of commuters
Commute 45min+
14%
of commuters
Below poverty
3.0%
tract-level

Amenities & Nearby Places

§ 13

Active listing — amenities should populate from the go-live pipeline. Click to fetch now if missing.

Location & Neighborhood

§ 13
● This Home
21818 San Luis Pass Road, Galveston, TX 77554
Galveston County · 29.14°N, 95.04°W
bank
ATM
0.4 mi · 1 within 2 mi
gym
Seek Peace Yoga Galveston
1.1 mi · 1 within 2 mi
Interactive map coming in v0.2 — currently showing schematic placement.
● Listing History
May 18, 2026 Listed $1.15M Susanna Mayberry
Dec 31, 2024 Built
Status change events from HAR MLS (future: full audit trail)
● Disclosures & Attribution
Listed by Susanna Mayberry · RE/MAX Leading Edge
Data provided by Houston Realtors Information Service (HAR MLS). Information deemed reliable but not guaranteed. All measurements, square footage, and school assignments should be independently verified. HAR MLS content last updated Aug 23, 2026.
MLS# 89189557 · LIST DATE: May 18, 2026 · PARCEL: 6376-0000-0106-000
R
EHO
REALTOR® · Equal Housing Opportunity
HAR.com Copyright © 2026, Houston Realtors Information Service, Inc. Deemed reliable, not guaranteed — independently verify. HARMLS last updated Sep 23, 2026, 11:00 PM CDT. Properties may subsequently be sold or off-market. Equal Housing Opportunity