Williamson County, TX Metro · Texas County Underwriting Brief

Williamson County, TX DSCR Property Tax, Windstorm & Transfer Tax Guide

In Williamson County, Texas (Williamson County, TX metro), 1–4 unit investment properties carry an average effective property tax rate of 1.89% and landlord hazard insurance averaging $735 per $100K of coverage. At a median 1–4 unit acquisition price of $425,000 and Form 1007 market rent of $3,100/mo, a 75% LTV DSCR loan models at 1.03x DSCR ($2,996/mo total PITIA).

Effective Property Tax
1.89%
Est. $669/mo at median
Landlord Ins / $100K
$735/yr
Est. $260/mo DP-3
Median 1–4 Unit Price
$425,000
75% LTV: $318,750
Modeled 75% LTV DSCR
1.03x
$3,100 rent / $2,996 PITIA

Williamson County Escrow & Closing-Cost Underwriting Rules

1. Post-Acquisition Tax Reassessment

Texas Annual Market Appraisal: County Appraisal District (CAD) revalues annually as of Jan 1; non-homestead circuit-breaker cap applies to qualifying properties under $5M, with May 15 protest deadline.

2. Windstorm, Flood & Hazard Tier

North Austin Metro Standard

3. Transfer & Mortgage Recording Taxes

Standard county deed recording & nominal transfer fee ($50–$350 flat or ≤0.20% of consideration).

4. CEMA / Doc-Stamp Optimization Strategy

Underwrite post-acquisition tax bill using county millage calculator to prevent Year-2 escrow shortage.

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Williamson County, TX DSCR Underwriting, Property Tax & Insurance Guide (2026) | Stephen R. Mannenbach | Stephen Mannenbach