Building a Deck in Myrtle Beach — Materials, Permits & What to Expect

A quality outdoor deck is one of the most valued additions to a Myrtle Beach home — extending living space, enhancing vacation rental appeal, and contributing meaningfully to property value. Getting the material selection, construction quality, and permits right from the start determines whether your deck is a 30-year asset or a 10-year replacement project.

Material Selection for Coastal South Carolina

Material choice is the most important decision in a Myrtle Beach deck project. The coastal environment — salt air, UV intensity, subtropical humidity, and heavy rainfall — is demanding on all exterior wood and composite materials. The right choice for your Myrtle Beach deck depends on your priorities.

Composite Decking (Trex, TimberTech, Fiberon)

Composite decking is our first recommendation for Myrtle Beach vacation rental properties and primary residences that want minimal ongoing maintenance. Key advantages in the coastal environment:

• Does not require sealing or staining — ever
• Resists salt air corrosion, UV fading, and moisture damage far better than wood
• Doesn't splinter — important for beach properties with barefoot guests
• Maintains appearance for 25–30 years with simple cleaning
• Premium brands (Trex Transcend, TimberTech AZEK) are fully capped composites that are nearly impervious to coastal conditions

Cost: $35–$65+ per square foot installed (material + labor) for premium capped composite. Higher upfront than wood, lower lifetime cost.

Pressure-Treated Wood

Pressure-treated lumber is the traditional choice and remains appropriate for Myrtle Beach if properly specified and maintained:

• Specify "ground contact rated" pressure treatment for any boards close to ground level
• Use stainless steel or hot-dip galvanized fasteners — standard zinc-coated screws corrode rapidly in coastal salt air
• Plan for staining and sealing every 2–3 years
• Inspect annually for any boards showing soft spots or significant checking

Cost: $20–$35 per square foot installed. Lower upfront, higher long-term maintenance cost in coastal conditions.

The Permit Process in Horry County

Deck construction in Horry County typically requires a building permit. The process:

1. Plan submission: A site plan showing the deck location relative to the home and property lines, plus structural drawings, is typically required
2. Review: Horry County Building Codes department reviews for code compliance — typically 5–15 business days
3. Permit issuance: Upon approval, permit is issued and must be posted at the construction site
4. Inspections: Footing inspection before concrete is poured, framing inspection, and final inspection

Decks built without permits create real problems at resale — lenders and buyers routinely request permit history, and an unpermitted deck either needs to be retroactively permitted or removed.

What a Quality Deck Installation Includes

• Proper footings: Concrete footings extending below the frost line (minimal in Myrtle Beach but required for code) and appropriately sized for the deck's load
• Ledger connection: The point where the deck attaches to the house must be properly flashed and fastened — a common failure point in lower-quality installations that allows water intrusion
• Joist and beam sizing: Structural members sized correctly for the span and load per code requirements
• Railing compliance: Rails must meet height and baluster spacing requirements per current code — this is a safety and liability issue
• Stair construction: Properly spaced and supported stairs meeting code requirements