How Much Does a Deck Cost in San Antonio? 2026 Pricing Guide

Deck pricing gets murky fast because so much of the cost depends on things you can't see in a photo — soil conditions, framing complexity, and material grade. Here's a realistic look at what San Antonio homeowners are actually paying in 2026.

Typical Cost Ranges by Material

• Pressure-treated pine: $28–$40 per square foot installed
• Cedar: $38–$55 per square foot installed
• Capped composite (Trex, TimberTech): $48–$70 per square foot installed
• Tropical hardwoods (ipe, cumaru): $60–$85 per square foot installed

These ranges include framing, footings, decking, and standard railing. A basic 300 sq ft pressure-treated deck typically lands between $8,400 and $12,000, while the same footprint in composite runs $14,400 to $21,000.

What Actually Moves the Price

Height and grade change

A ground-level deck is the cheapest to build. Every additional foot of height adds railing, stairs, and often taller support posts with deeper footings — common on sloped lots in Boerne and Helotes.

Soil and footing depth

San Antonio's expansive clay soil often requires deeper or larger-diameter footings than you'd see in other regions, which adds labor and concrete cost that's easy to underestimate in a DIY budget.

Railing and stair complexity

Cable railing, glass panels, or custom-milled balusters can add $25–$60 per linear foot over standard wood or aluminum railing.

Hidden Costs Worth Budgeting For

• Permit fees, typically $150–$500 depending on jurisdiction
• HOA architectural review fees in communities like Stone Oak
• Utility locate delays if lines run through the dig area
• Old deck removal and haul-away if you're replacing an existing structure

The honest takeaway: material choice matters, but soil, height, and railing complexity usually move the final number more than most homeowners expect going in.