Homes for Sale/Galveston County/Galveston/Sea Isle Ext 12
Active MLS #49178443 · 223 days on market

21911 Guadalupe Drive

Galveston, TX 77554
Subdivision  ·  Sea Isle Ext 12
List Price
$619,000
$417/SF
Beds
4
Baths
3
Sq Ft
1,484
Built
1979
Lot
0.14 ac
Garage
1-car
County
Galveston
Tax Rate
1.56%

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

Welcome to your coastal retreat in Sea Isle.This beautifully updated 4-bedroom,3-bath home is perfectly situated on a quiet bayfront street,offering comfort,style& waterfront living.The spacious living room flows seamlessly into the dining area,where a wall of windows invite in natural light & vistas.The modern kitchen is a true centerpiece featuring a lg quartz island w/ seating for 4 or more,sleek subway tile backsplash & pendant lighting.This open layout makes entertaining effortless.The primary bedroom offers canal views & private deck access to relax and unwind.The home features beautiful vinyl plank flooring throughout,adding both durability & a contemporary coastal touch.Outdoor living shines here w/ expansive canal-side trex planked deck that provides room for lounging or outdoor entertaining,while roll-down shutters offer convenience and protection when needed.

Features

§ 02

Interior

  • Bedroom On Main Level
  • Quartz Counters
  • Three Bedrooms Up
  • Dishwasher
  • Plank
  • Vinyl
  • Heat: Central
  • Heat: Electric
  • Cool: Central Air
  • Cool: Electric
  • Electric Dryer Hookup

Exterior & lot

  • Subdivision
  • Waterfront
  • Roof: Metal
  • Attached
  • Garage

Community

  • Marina
  • Boat Ramp
  • Boat Slip
  • Tennis Courts
  • Style: Traditional

Property Details

§ 03 · Full MLS record

Property

Property Type Residential
Property Sub Type Detached
Architectural Style Traditional
Year Built 1979
Year Built Source PublicRecords
New Construction No

Building

Stories 1
Levels One
Living Area 1,484 sq ft
Living Area Source Appraiser
Building Area Total 1,484 sq ft
Construction Vinyl Siding
Roof Metal

Rooms & Baths

Bedrooms 4
Bedrooms Possible 4
Bathrooms (total) 3
Bathrooms Full 3
Bathrooms Half 0
Rooms Total 7

Interior

Interior Features Bedroom On Main Level, Quartz Counters, Three Bedrooms Up
Flooring Plank, Vinyl
Appliances Dishwasher
Laundry Electric Dryer Hookup

Exterior

Pool Private No
Waterfront Yes
Waterfront Features Bulkhead, Canal Front, Waterfront

Parking & Garage

Garage Spaces 1
Attached Garage Yes
Parking Features Attached, Garage

Lot

Lot Size (acres) 0.1398
Lot Size Source Appraiser
Lot Features Subdivision, Waterfront

Location

County Galveston
MLS Area Major 33
MLS Area Minor West End
Subdivision Sea Isle Ext 12
Postal Code 77554

Utilities

Heating Central, Electric
Cooling Central Air, Electric
Water Source Public
Sewer Public Sewer

HOA / Association

HOA Yes
HOA Fee $300
HOA Fee Frequency Annually
HOA Name Sea Isle POA
Amenities Marina, Boat Ramp, Boat Slip, Tennis Courts

Taxes, Terms & Disclosures

Tax Annual Amount $9,629
Tax Year 2025
Tax Rate (est.) 1.56%
Parcel # 6388-0000-1725-000
Legal Description ABST 121 PAGE 15 LOT 1725 SEA ISLE 12TH EXTENSION
Lease Considered No
Disclosures Seller Disclosure

Room Layout

§ 04 · 7 rooms · MLS-supplied

Main level · 1

Bedroom 11x10

Second level · 6

Primary Bedroom 15x14
Bedroom 10x9
Bedroom 10x10
Kitchen 15x12
Dining Room 14x10
Living Room 14x14

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
$4,519
30-YR FIXED · ADJUST ASSUMPTIONS BELOW
%
%
Principal & interest$3,717 Property tax$802 Homeowners insuranceTBD
Subtotal (P&I + Tax) $4,519
Yearly HOA fee $300

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
$300
ANNUALLY
Association nameSea Isle POA Management co. Website Phone Cert on filepending
● Community amenities
bank
ATM · 0.7mi
ATM · 4.4mi
Circle K ATM · 5.1mi
gym
Seek Peace Yoga Galveston · 1.2mi
Gymaica Fitness · 5.1mi
park
· 2.5mi
· 2.7mi
· 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 · 8.1mi
West Isle Church · 8.1mi

Broadband & Connectivity

§ 06 · Rolled up from MLS
● Max advertised speed at this address
5,000 Mbps
Fiber available · cable ok
Top fiber: AT&T
Fiber / DSL
AT&T
Speeds per provider
Cable
Xfinity
Speeds per provider
Fixed Wireless
T-Mobile
Speeds per provider
Fixed Wireless
Verizon
Speeds per provider
Satellite
HughesNet
Speeds per provider
Satellite
Starlink
Speeds per provider
Satellite
Viasat Inc
Speeds per provider

Environmental Risk

§ 08
V
FEMA Zone
Zone VE · Coastal High Hazard
Coastal wave-action hazard zone. Flood insurance required.
PANEL 48167C BASE FLOOD ELEV. 14.0 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
2 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 Ext 12
TIER: SUBDIVISION
Subdivision name (MLS)Sea Isle Ext 12 City · ZIPGalveston · 77554 CountyGalveston Listings in subdivision25 Active now1 Sold (last 12 mo)3 Curated amenities20
● Year-built distribution
1975s 1

Fire Protection

§ 11
Nearest station
Galveston Fire Department Station 8
Distance
0.4 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
21911 Guadalupe Drive, Galveston, TX 77554
Galveston County · 29.15°N, 95.05°W
bank
ATM
0.7 mi · 1 within 2 mi
gym
Seek Peace Yoga Galveston
1.2 mi · 1 within 2 mi
Interactive map coming in v0.2 — currently showing schematic placement.
● Listing History
Feb 12, 2026 Listed $619,000 Michael Gaido
Dec 31, 1978 Built
Status change events from HAR MLS (future: full audit trail)
● Disclosures & Attribution
Listed by Michael Gaido · Sand N Sea Properties, LLC
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 Sep 12, 2026.
MLS# 49178443 · LIST DATE: Feb 12, 2026 · PARCEL: 6388-0000-1725-000
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