For sale

$750,000

310 Harbor Light St, Port Isabel, TX 78578

5beds

3,508sqft

$5,718/mo

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Multi Family

Built in 1989

-- sqft lot

$-- Zestimate^®

$214/sqft

$-- HOA

What's special

Beautiful shared outdoor spaceBeautiful bay viewsCharming main residenceThree separate efficiency cottages

Rare opportunity to own a truly unique property near Port Isabel's Historic district with beautiful bay views. This well-maintained property features a charming main residence, three separate efficiency cottages, and storage, all situated on three individual city lots. Originally built in the 1940's with solid concrete-block construction, the property has been carefully maintained and well cared for over the years. The combined up keep of the residence and improvements reflects pride of ownership and preserves the character, durability, and charm of this unique property. A particularly exciting opportunity is the large central area between the residence's, which could be transformed into a beautiful shared outdoor space-perfect for a pool, gazebo, entertaining area or private courtyard. A rare combination of location, character, multiple residences, careful maintenance and beautiful bay views that is hard to find in Port Isabel.

42 days
137
13

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 5
Bathrooms: 5
Full bathrooms: 5

Heating

Electric

Cooling

Central Air

Appliances

Included: Dishwasher, Disposal, Microwave, Refrigerator, Washer/Dryer
Laundry: Washer/Dryer Hook-up

Features

Cabinets-Manufactured, Ceiling Fan(s), Storage, Walk-In Closet(s)
Flooring: Carpet, Tile
Furnished: Yes

Interior area

Total structure area: 3,508
Total interior livable area: 3,508 sqft

Video & virtual tour

View virtual tour

Property

Parking

Total spaces: 2
Parking features: Double Attached Garage, Garage Door Opener
Attached garage spaces: 2

Features

Levels: One
Stories: 1
Patio & porch: Patio
Exterior features: Private Yard, Sprinkler System, Storage

Lot

Features: Interior Lot, Less than 1 Acre

Details

Parcel number: 4700000190003000
Zoning: MF

Construction

Type & style

Home type: MultiFamily
Property subtype: Multi Family

Materials

Block, Brick
Foundation: Slab
Roof: Composition,Flat

Condition

Year built: 1989

Community & HOA

Community

Features: Other
Security: Smoke Detector(s)
Subdivision: Original Townsite Port Isabel

Location

Region: Port Isabel

Financial & listing details

Price per square foot: $214/sqft
Tax assessed value: $247,047
Annual tax amount: $3,500
Date on market: 9/7/2026
Listing terms: Bank Loan,Cash,Conventional,Texas Vet,VA Loan

Estimated market value

Not available

Estimated sales range

Not available

$5,865/mo

Price history

Date	Event	Price
9/7/2026	Listed for sale	$750,000$214/sqft
Source: SPIBOR #106767 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	--	$170,038 +10%
2024	--	$154,580 +10%
2023	--	$140,527 +10%
2022	--	$127,752
2021	--	$127,752
2020	--	$127,752 -1.2%
2019	--	$129,267 +0.6%
2018	$3,051 +0.1%	$128,442
2017	$3,050 +0.3%	$128,442
2016	$3,042 +36.6%	$128,442
2015	$2,227	$128,442 +36.1%
2014	$2,227	$94,368
2013	--	$94,368
2012	--	$94,368
2011	--	$94,368 +4.3%
2010	--	$90,475 +0.4%
2009	--	$90,097
2008	--	$90,097
2007	--	$90,097 +9.3%
2005	$2,219 +44.1%	$82,414 +45.1%
2004	$1,540 -0.7%	$56,800
2003	$1,551 +7.4%	$56,800 +20.5%
2002	$1,444 +115.3%	$47,124 +24.7%
2000	$670	$37,776