855 Proton Rd San Antonio, TX 78258-4203
Property profile & analytics
855 Proton Rd, San Antonio, TX 78258-4203
- Medical Office Space
- 12,719 SF
- 2.66 lot acres
Property ID
US83-3811315
The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.
Location Intelligence
Current Use by Public Records
- Gastroenterology Consultants of San Antonio / Medical Clinic
- James F. Jackson, MD / Physician
- Donna McMyler, MD / Physician
- Michael J. Guirl, MD / Physician
- Paresh P. Mehta, MD / Physician
Property Details for 855 Proton Rd
- Year built
- 1999
- Lot size
- 2.66 lot acres
- Property type
- Medical Office Space
- Property subtype
- Medical centers
- APN
- 17429-002-0030
- APU
- 174290020030
Sales History
| Date | Price | Buyer | Seller | Deed Type | Mortgage |
|---|---|---|---|---|---|
| Apr 1, 2026 | — | Ca Trust | Bsf3 Gi Alliance LLC | Special Warranty Deed | — |
| Jan 16, 2026 | — | Bsf3 Gi Alliance LLC | Mckinley Pr LLC | Special Warranty Deed | $250k · Cadence Bank NA |
| May 20, 2021 | — | Mckinley Pr LLC | Proton Drive Property Venture Ltd | Special Warranty Deed | $26k · Fifth Third Bank NA |
| Sep 27, 2018 | — | Proton Drive Prop Venture Ltd | — | Deed · related | $3M · Miscellaneous Ins Co |
| May 11, 2006 | — | Proton Drive Prop Venture Ltd | M & P Real Estate Ltd | Grant Deed | $2.9M · Compass Bank |
| — | — | Proton Drive Prop Venture Ltd | — | Deed Of Trust · related | $2.5M · West Coast Life Insurance |
| — | — | Proton Drive Prop Venture Ltd | — | Deed Of Trust · related | $3M · Miscellaneous Ins Co |
Value Estimations
based on Realmo’s proprietary methodology
-
AI approach
- Method
- Estimation
- ML approach
- $545,000
-
Comparable approach
- Method
- Estimation
- AI Estimate
- $767,000
Market price range: $367k - $1.22M -
Alternative Use
- Use
- Estimation
- MEDICAL BUILDING
- $880,000 Current use
- OFFICE BUILDING
- $845,000 Change: -4% Conversion: Easy
- APARTMENT HOUSE (5+ UNITS)
- $820,000 Change: -7% Conversion: Moderate
- WAREHOUSE, STORAGE
- $750,000 Change: -15% Conversion: Difficult
Get a detailed, property-specific estimation — fast and free
Location Insight
- Map
- Local Demand
- City
- San Antonio
- County
- Bexar
- State
- Texas
- Longitude
- -98.4808
- Latitude
- 29.6127
- CBSA code
- 41700
- CBSA name
- SAN ANTONIO, TX METROPOLITAN STATISTICAL AREA
Property Tax & Assessments
Tax date
Tax Amount
Assessed Land Value
Assessed Improvement Value
Total Assessed Value
Applied Tax Rate
Land Market Value
Improvement Market Value
Total Market Value
2023
$71,160
$1,356,790
$1,743,210
$3,100,000
-
$1,356,790
$1,743,210
$3,100,000
