Homes for Sale/Calhoun County/Port O Connor/Port O'Connor
Active MLS #6844747 · 282 days on market

509 Monroe Avenue

Port O Connor, TX 77982
Subdivision  ·  Port O'Connor
List Price
$750,000
$301/SF
Beds
4
Baths
3
Sq Ft
2,488
Built
1986
Lot
0.32 ac
Garage
2-car
County
Calhoun
Tax Rate
1.08%

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

Welcome Investors and Short Term Rental Owners to this exceptional 2,488 sq ft two-story coastal home on a large corner lot. Located only a few blocks from the water, this well built home is ready for you to come in and create the newest fishing retreat in town. The upper level features three bedrooms, two baths, and a full kitchen with granite countertops, custom cabinetry, gas cooktop, built-in microwave and oven. Can be it's own rental. The huge living space opens to outdoor covered deck overlooking the beautiful pool. The first floor can be separated and rented out as a second weekend home along with a free standing She Shed which can be finished out into a third income producer or Mother-in-law quarters. Both upper and lower kitchens feature built in islands for in kitchen dining while the upper is open to the bright spacious living/dining area. Call for more information or to schedule your own private tour. Please verify all room measurements.

Features

§ 02

Interior

  • Balcony
  • Crown Molding
  • Elevator
  • Granite Counters
  • High Ceilings
  • Kitchen Island
  • Kitchen Family Room Combo
  • Window Treatments
  • Dishwasher
  • Disposal
  • Ice Maker
  • Water Softener Owned
  • Heat: Central
  • Heat: Electric
  • Cool: Central Air
  • Cool: Electric
  • Electric Dryer Hookup

Exterior & lot

  • Corner Lot
  • Roof: Metal
  • Attached Carport
  • Detached
  • Garage
  • Heated
  • In Ground

Community

  • Smoke Detectors
  • Style: Ranch

Property Details

§ 03 · Full MLS record

Property

Property Type Residential
Property Sub Type Detached
Architectural Style Ranch
Year Built 1986
Year Built Source PublicRecords
New Construction No

Building

Stories 2
Levels Two
Living Area 2,488 sq ft
Living Area Source Appraiser
Building Area Total 2,488 sq ft
Construction Cement Siding, Wood Siding
Roof Metal

Rooms & Baths

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

Interior

Interior Features Balcony, Crown Molding, Elevator, Granite Counters, High Ceilings, Kitchen Island, Kitchen Family Room Combo, Window Treatments
Appliances Dishwasher, Disposal, Ice Maker, Water Softener Owned
Laundry Electric Dryer Hookup
Windows Window Coverings
Security Smoke Detectors

Exterior

Pool Private Yes
Pool Features Heated, In Ground

Parking & Garage

Garage Spaces 2
Attached Garage No
Carport Spaces 4
Parking Features Attached Carport, Detached, Garage

Lot

Lot Size (acres) 0.3214
Lot Size Source Appraiser
Lot Features Corner Lot

Location

County Calhoun
MLS Area Major 65
Subdivision Port O'Connor
Road Surface Asphalt
Postal Code 77982

Utilities

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

Taxes, Terms & Disclosures

Tax Annual Amount $8,110
Tax Year 2025
Tax Rate (est.) 1.08%
Parcel # 30904
Legal Description PORT O'CONNOR, BLOCK 124, LOT 7,8
Listing Terms Cash, Conventional, FHA, Investor Financing, Va Loan
Lease Considered No
Disclosures Seller Disclosure

Room Layout

§ 04 · 4 rooms · MLS-supplied

Main level · 1

Bedroom 20x13

Second level · 3

Primary Bedroom 11x12
Bedroom 10x10
Bedroom 10x10x

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 · Rolled up from MLS
● Max advertised speed at this address
7,000 Mbps
Fiber available · cable ok
Cable
Spectrum
Speeds per provider
Fixed Wireless
T-Mobile
Speeds per provider
Satellite
HughesNet
Speeds per provider
Satellite
Starlink
Speeds per provider
Satellite
Viasat Inc
Speeds per provider
Unknown
Frontier
Speeds per provider
Unknown
Infinium Broadband
Speeds per provider
Unknown
TISD Inc
Speeds per provider

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 O'Connor
TIER: SUBDIVISION
Subdivision name (MLS)Port O'Connor City · ZIPPort O Connor · 77982 CountyCalhoun Listings in subdivision3 Active now2 Sold (last 12 mo)0 Curated amenities0
● Year-built distribution
1985s 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
509 Monroe 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
Dec 15, 2025 Listed $750,000 Gilbert Soltermack
Dec 31, 1985 Built
Status change events from HAR MLS (future: full audit trail)
● Disclosures & Attribution
Listed by Gilbert Soltermack · The Ron Brown Company
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 14, 2026.
MLS# 6844747 · LIST DATE: Dec 15, 2025 · PARCEL: 30904
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, 10:44 PM CDT. Properties may subsequently be sold or off-market. Equal Housing Opportunity