Homes for Sale/Calhoun County/Port O Connor/Port Oconnor
Active MLS #96780771 · 124 days on market

804 Madison Avenue

Port O Connor, TX 77982
Subdivision  ·  Port Oconnor
List Price
$189,000
$378/SF
Beds
2
Baths
1
Sq Ft
500
Built
2024
Lot
0.16 ac
Garage
0-car
County
Calhoun
Tax Rate
1.84%

Schools

§ 03
District
Elementary PORT O CONNOR SCHOOL A
Middle TRAVIS MIDDLE C
High CALHOUN H S CCMR 93% · Grad 99% B
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

Located in the coastal community of Port O'Connor, this unique custom-built 2-bedroom, 1-bath home offers the perfect opportunity for a vacation getaway, coastal retreat, or vacation rental property. Originally built from an 18-wheeler RV that was once used as a touring unit for Copenhagen, this one-of-a-kind property has been creatively remodeled into the charming vacation rental home it is today. Conveniently located approximately 8 blocks from the beach, you’ll enjoy quick access to boating, fishing, waterfront dining, and everything the Texas Gulf Coast has to offer. Sitting on a large lot, the property also features 2 RV hookups, offering additional flexibility for guests, extra parking, or future possibilities. Enjoy the laid-back atmosphere of Port O’Connor while being close to local marinas, boat ramps, and outdoor recreation. Whether you’re looking for a personal coastal escape or an income-producing vacation property, this home is full of character and coastal charm.

Features

§ 02

Interior

  • Heat: Central
  • Heat: Electric
  • Cool: Central Air
  • Cool: Electric

Exterior & lot

  • Cleared
  • Roof: Metal
  • Foundation: Block
  • Detached Carport

Community

  • Style: Traditional

Property Details

§ 03 · Full MLS record

Property

Property Type Residential
Property Sub Type Detached
Architectural Style Traditional
Year Built 2024
Year Built Source PublicRecords
New Construction No

Building

Stories 1
Levels One
Living Area 500 sq ft
Living Area Source Appraiser
Building Area Total 500 sq ft
Foundation Block
Construction Vinyl Siding
Roof Metal

Rooms & Baths

Bedrooms 2
Bathrooms (total) 1
Bathrooms Full 1
Bathrooms Half 0
Rooms Total 2

Exterior

Pool Private No

Parking & Garage

Garage Spaces 0
Carport Spaces 1
Parking Features Detached Carport

Lot

Lot Size (acres) 0.1607
Lot Size Source Appraiser
Lot Features Cleared

Location

County Calhoun
MLS Area Major 65
Subdivision Port Oconnor
Postal Code 77982

Utilities

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

Taxes, Terms & Disclosures

Tax Annual Amount $3,472
Tax Year 2025
Tax Rate (est.) 1.84%
Parcel # 30301
Legal Description PORT OCONNOR, BLOCK 121, LOT 2
Lease Considered No

Room Layout

§ 04 · 2 rooms · MLS-supplied

Main level · 2

Primary Bedroom N/A
Bedroom n/a

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 Port O'Connor ID Match confidence

Taxes & Cost of Ownership

§ 04
Tax breakdown not availableWe could not resolve the taxing jurisdictions for this listing. We will enrich this when the county tax roll loads.

HOA & Community

§ 05
No HOA on recordIf this is an HOA property, details are not yet loaded. Full cert available on request.

Broadband & Connectivity

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

Environmental Risk

§ 08
?
FEMA Zone
Flood zone: not mapped by FEMA for this area
No FEMA digital flood map covers this location, so this property's flood risk has not been established. Verify flood insurance requirements with your lender.
SFHA NOT DETERMINED
🌡 Heat days >95°F
101 days/yr above 95°F
Plus 50 days above 100°F. NOAA station records, 2016-2025 average.
30-day air qualityData not yet available
Drought (current)Data not yet available
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
Port Oconnor
TIER: SUBDIVISION
Subdivision name (MLS)Port Oconnor City · ZIPPort O Connor · 77982 CountyCalhoun Listings in subdivision32 Active now8 Sold (last 12 mo)3 Curated amenities0
● Year-built distribution
1975s 1 1980s 1 2000s 1 2020s 2 2025s 1

Fire Protection

§ 11
Nearest station
Port O'Connor Volunteer Fire Department
Distance
0.2 mi
Straight-line from listing
ISO rating
Future data point
Avg. response
From incident log (future)

Neighborhood Demographics

§ 12 · Census tract 48057000501 · ACS 2023
Median HH income
$99,762
ACS 2023
Median home value
$270,700
Census self-report
Owner-occupied
46%
1,421 housing units
Bachelor's+
14%
Adults 25+
Median age
52.3
Population 1,612
Work from home
7%
of commuters
Commute 45min+
25%
of commuters
Below poverty
5.8%
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
804 W Madison Avenue, Port O Connor, TX 77982
Calhoun County · 28.45°N, 96.41°W
No curated amenities within 2 mi yet.
Interactive map coming in v0.2 — currently showing schematic placement.
● Listing History
May 22, 2026 Listed $189,000 Katie Foley
Dec 31, 2023 Built
Status change events from HAR MLS (future: full audit trail)
● Disclosures & Attribution
Listed by Katie Foley · Rapid Realty, 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 16, 2026.
MLS# 96780771 · LIST DATE: May 22, 2026 · PARCEL: 30301
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