Home Renovations & Exterior Repairs

A newly built 12x18 deck with a custom staircase and cable railing system enhances the outdoor space of this Birmingham home.

How Much Should a 12x18 Deck Cost?

A professionally built 12×18 deck in Birmingham, featuring cable railings and a Trex Rain Escape drainage system, typically costs between $21,000 and $25,000. To give you a clear picture of what goes into this investment, we’ve broken down a recent project, detailing the full scope of work and cost allocation. Keep reading to see firsthand what to expect, from demolition and structural repairs to custom stair construction and weatherproofing features.

Last Updated 3/28/2025 | Decks

Detailed Scope For A Recent 12x18 Deck in Birmingham, 35223

The homeowners loved their outdoor space but needed a full deck replacement due to wear, structural concerns, and rot along the siding where the deck was attached. They wanted to preserve their existing cable railing system, add a staircase for better backyard access, and improve durability. We removed the old deck, repaired and painted the damaged siding, and installed proper flashing to prevent future water damage. The new 12×18 deck included a 42-inch wide staircase with a mid-landing, making access safer and more convenient. To maximize functionality, we also installed a Trex Rain Escape drainage system, keeping the area beneath dry for year-round outdoor use. The result is a strong, stylish, and highly functional deck built to last.

Permits and Inspections:

We will obtain all necessary permits and coordinate required inspections to ensure your project fully complies with local building codes and regulations.

Deck Removal and Preparation: $12,000

We will remove your existing deck completely while carefully preserving your existing cable railing system and the wiring to the ceiling fan beneath for reuse. Next, we’ll remove and inspect the siding where the deck was attached, repair any rot damage discovered, and repaint the repaired areas to match your home’s existing exterior. We’ll also install proper flashing along the deck ledger board to protect your home from future water damage. After preparation, we’ll construct a new 12×18 deck matching the original footprint and reinstall the preserved cable railing system.

Stair Construction with Cable Railings: $5,600

We will build custom 42-inch wide stairs extending from the right side of the deck as viewed from the backyard, featuring approximately 16 steps with a mid-point landing turning right toward your yard. We’ll install new cable railings (provided by you) along both sides of the stairs and landing, ensuring a safe and attractive finish.

Under-Deck Trex Rain Escape System: $5,650

During deck construction, we’ll install a Trex Rain Escape drainage system underneath, directing water away from your home. A gutter system will be placed at the deck’s outer edge, and a downspout will carry water efficiently down to your yard, enhancing usability of the space below your deck.

Ceiling Fan Installation:

Using the existing electrical wiring, we’ll professionally install your provided ceiling fan under the deck, making the space comfortable and functional year-round.

Debris Removal and Cleanup:

Upon project completion, we’ll thoroughly clean your property, hauling away all construction debris and leaving your yard pristine.

Project Total: $23,250

The total investment of around $23,250 for this deck reflects high-quality materials, professional craftsmanship, detailed customization, and essential home repairs. This comprehensive approach ensures your deck is not only visually appealing but also structurally sound and built to last.

Looking For An Experienced Deck Contractor?

Whether you’re planning a brand-new deck installation, need expert deck repair to restore an aging structure, or are considering a full deck replacement to improve safety and durability, our team is ready to help. As a trusted deck builder in Birmingham, we also specialize in building covered decks that provide shade and comfort while keeping pests out, as well as installing composite decks for homeowners seeking a long-lasting, low-maintenance option. Every project is custom-tailored to fit your home and lifestyle, ensuring your new deck is both beautiful and built to last. Explore our deck services in Birmingham, AL and contact us today to get started on your outdoor transformation!