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

Build your dream home in one of Galveston’s most desirable communities! Enjoy all that Sea Isle has to offer, including a marina, boat ramp, community pool, tennis courts, and more. With beach views, two mature palm trees, convenient bay access, and the beach just a short golf cart ride away, this is the perfect opportunity to create your ideal island retreat!

Features

§ 02

Interior

Not provided

Exterior & lot

Subdivision
Association

Community

Beach Rights
Beach Access
Marina
Boat Ramp
Playground
Pool
Tennis Courts

Property Details

§ 03 · Full MLS record

Property

Property Type

Land

Rooms & Baths

Bathrooms (total)

0

Exterior

Pool Features

Association

Lot

Lot Size (sq ft)	7,648
Lot Size Source	Survey
Lot Features	Subdivision

Location

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

Utilities

Water Source	Public
Sewer	Public Sewer

HOA / Association

HOA	Yes
HOA Fee	$318
HOA Fee Frequency	Annually
HOA Name	Sea Isle POA
Amenities	Beach Rights, Beach Access, Marina, Boat Ramp, Playground, Pool, Tennis Courts

Taxes, Terms & Disclosures

Parcel #	6376-0000-0421-000
Legal Description	ABST 121 Hall & Jones Sur Lots 421A Sea Isle First Extension
Disclosures	None

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

$1,038

30-YR FIXED · ADJUST ASSUMPTIONS BELOW

Interest rate

%

Down payment

%

Principal & interest$840 Property tax$198 Homeowners insuranceTBD

Subtotal (P&I + Tax) $1,038

Yearly HOA fee $318

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

$318

ANNUALLY

Association nameSea Isle POA Management co.— Website— Phone— Cert on filepending

● Community amenities

bank

ATM · 0.5mi
ATM · 0.6mi
ATM · 4.3mi

gym

Seek Peace Yoga Galveston · 1.1mi
Seek Peace Yoga Galveston · 1.2mi
Gymaica Fitness · 5.0mi

park

· 2.4mi
· 2.5mi
· 2.5mi

grocery

Seven Seas Market · 4.2mi
Seven Seas Market · 4.3mi
Valero · 5.0mi

police_station

Jamaica Beach Police · 5.1mi
Jamaica Beach Police · 5.2mi

place_of_worship

Mary, Star of the Sea Church · 5.1mi
Mary, Star of the Sea Church · 5.2mi
West Isle Presbyterian Church · 8.0mi

Broadband & Connectivity

§ 06

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

Environmental Risk

§ 08

A

FEMA Zone

Zone AE · Special Flood Hazard Area

1% annual chance of flooding (100-year floodplain). Flood insurance typically 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

3 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

TIER: SUBDIVISION

Subdivision name (MLS)Sea Isle City · ZIPGalveston · 77554 CountyGalveston Listings in subdivision606 Active now22 Sold (last 12 mo)5 Curated amenities40

● Year-built distribution

1970s 1 1975s 3 1980s 2 1985s 2 1995s 3 2000s 1 2005s 1 2010s 2 2020s 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

21726 Zachary Drive, Galveston, TX 77554

Galveston County · 29.14°N, 95.04°W

bank

ATM

0.5 mi · 2 within 2 mi

gym

Seek Peace Yoga Galveston

1.1 mi · 2 within 2 mi

Interactive map coming in v0.2 — currently showing schematic placement.