3100 Castro St, Austin, TX 78702 Property Records

Travis County property record for 3100 Castro St, Austin, TX 78702

Property Summary

Property Type	Single Family Home
Details	1 ba · 480 sqft · built 1951
Lot Size	0.138 acres (6,037 sqft)
Owner	Individual Name on File
Tax Bill	$8,769 (2024)
Deeds & Mortgages	Apr 2023 Mortgage Aug 2017 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`0204130131`

Property Details

APN / Parcel Number

Primary APN	`0204130131`
Alternative APNs	`02041301310000` `192239`

Interior

Full Baths	1 Bath
Stories	1 Story
Building Area	480 sqft Living Area
1st Floor Area	480 sqft

Exterior

Year Built	Built 1951
Construction Type	Wood Frame
Foundation Type	Pier/Post & Beam
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	6,037 sqft (0.138 acres)
Lot Dimensions	120 ft deep x 50 ft wide
Garage Type	Detached
Garage Area	180 sqft
Porch	Porch
Porch Area	8 sqft
Patio Area	48 sqft

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	HVAC

Location & Zoning

Account Number	192239
Old Parcel Number	02041301310000
Street Address	3100 CASTRO ST
City	AUSTIN
State	TX
Zip	78702-3615
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 6 BLK 6 OLT 26-27 OLT 32-33 DIV A CHERNOSKY NO 12
Legal Subdivision	CHERNOSKY NO 12
Legal Block	6
Legal Lot Number	6
Jurisdiction	TRAVIS TX
Township / Civil Division	AUSTIN
Census Block Group	1
Census Block	1003
Census Tract	902

Owner

Source: Travis County assessment roll, as of August 1, 2025

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Co-owner	Verified Secondary Owner
Mailing Address	3104 CASTRO ST, AUSTIN, TX 78702-3615
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 25, 2023	Deed of Trust, Mortgage · Conventional Mortgage INDEPENDENT BANK
Aug 9, 2017	Vendor's Lien, Transfer · Commercial Mortgage PROSPERITY BANK

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Aug 9, 2017
Deed Sale	Aug 9, 2017
Deed Document Number	2017128230
Record Updated	Jun 8, 2026

April 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	TRAVIS TX
Property Address	3100 CASTRO ST, AUSTIN, TX 78702-3615
Transaction Type	Mortgage
Record Updated	May 17, 2023
Title Company	AUSTIN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3104 CASTRO ST, AUSTIN, TX 78702-3615

Mortgage

Document Number	0000043514
Date	Apr 25, 2023
Instrument	2023043514

Lender

Name	INDEPENDENT BANK
Type	Bank
Address	MCKINNEY, TX 75070

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2053

August 2017: Vendor's Lien, Transfer

Document Type	Vendor's Lien
Jurisdiction	TRAVIS TX
Recording Date	Aug 9, 2017
Property Address	3100 CASTRO ST, AUSTIN, TX 78702-3615
Document Number	0000128230
Map Reference	VL4 PG235
Instrument Date	Aug 8, 2017
Instrument	2017128230
Transaction Type	Transfer
Record Updated	Nov 11, 2021

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	4514 S 3RD ST, 4514, AUSTIN, TX 78745-1968

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3104 CASTRO ST, AUSTIN, TX 78702-3615

Mortgage

Document Number	0000128231
Date	Aug 9, 2017
Instrument	2017128231

Lender

Name	PROSPERITY BANK
Type	Bank
Special Notes	Seller Financed

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	192 Months
Due	Aug 8, 2033

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

Source: Travis County assessment roll, as of August 1, 2025

Property Jurisdictions

Type	Name
State	Texas
Municipality	Austin City
County	Travis County
Unified School District	Austin Independent School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$384,388 (-31.05%) Land $276,066 Building $108,322	$384,388 (-31.05%) Land $276,066 Building $108,322
2024	$8,769.00 (-13.56%)
2023		$557,457 Land $425,000 Building $132,457	$557,457 Land $425,000 Building $132,457
2022	$10,145.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective May 17, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	4 in force
Nearby Flood Claims	1 (1981)
Most Recent Claim	Jan 1981 · rainfall accumulation

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 99.8% of the US · lower than 99.8% of Texas
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF AUSTIN WATER & WASTEWATER serves 1,115,323 people · EPA ID TX2270001
Water Source	Surface water
Last State Inspection	Jul 2023
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	Turbidity resolved · Feb 2022
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 532 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Google Fiber Fiber · Fixed Wireless in parts of the area	8,000 / 8,000
AT&T Fiber · Fixed Wireless · DSL in parts of the area	5,000 / 5,000
Radiate Holdings Fiber · Cable in parts of the area	1,500 / 1,500
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile USA Fixed Wireless	100 / 20

May also be available: PCs for People.

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