500 sq ft Composite Deck Build in Eagle

500 sq ft Composite Deck Build in Eagle

Banbury Meadows, Eagle 3 weeks 500 sq ft

Project Overview

A custom 500 sq ft composite deck with aluminum railing, built-in bench seating, integrated stair lighting, and a pergola — designed for Idaho's four-season outdoor living.

Project Details

Project Duration
3 weeks
Deck Size
500 sq ft
Budget Range
$35,000–$45,000
Decking Material
Trex Transcend
Pergola Size
12 ft × 12 ft
Warranty
25 years
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The Challenge

The homeowners had a small, rotting pressure-treated wood deck that was too small for their family and unsafe for their grandchildren. They wanted a large, low-maintenance outdoor living space that could handle Idaho's weather extremes — hot summers, cold winters, and everything in between. The yard had a 2-foot grade change that complicated the design.

Our Solution

We designed a multi-level composite deck that worked with the grade change, creating a main deck level for dining and a lower step-down lounge area. Trex Transcend composite decking was selected for its durability and 25-year warranty. We installed aluminum railing with cable infill for an unobstructed view of the foothills. Built-in bench seating along one edge doubled as storage. A 12×12 attached pergola provides shade. LED stair and post cap lighting was integrated for evening use.

The Result

The family now has a true outdoor living room that they use from April through October. The composite decking requires no staining or sealing, the aluminum railing will not rust, and the integrated lighting extends usability into the evening hours. The multi-level design turned the grade challenge into a design feature.

Project Photos

Completed composite deck in Eagle, Idaho

Main deck level with dining area and mountain views

Deck overview showing multi-level design

Multi-level design working with the natural grade change

Project Timeline

1

Design & Engineering

1.5 weeks

Site survey, grade assessment, structural design, material selection, permit application

2

Foundation & Framing

4 days

Concrete footings, post installation, beam and joist framing for both levels

3

Decking & Features

5 days

Composite deck board installation, bench seating, pergola construction

4

Railing & Lighting

3 days

Aluminum railing with cable infill, LED stair lights, post cap lights, electrical

5

Final Inspection

1 day

Code inspection, punch list, homeowner walkthrough

Key Features

500 sq ft multi-level composite deck
Grade change integrated into stepped design
Built-in bench seating with storage
12×12 attached pergola for shade
Aluminum railing with cable infill
Integrated LED stair and post lighting
Hidden fastener system (no visible screws)
25-year manufacturer warranty on decking

Materials Used

Trex Transcend composite decking (Spiced Rum color)
Aluminum railing with stainless cable infill
Pressure-treated substructure (posts, beams, joists)
Concrete footings (24" diameter, below frost line)
!Attached cedar pergola with stainless hardware
LED post cap lights and stair riser lights
Hidden fastener clips (Trex Hideaway system)
Composite fascia boards for finished edges
We went from a tiny rotting deck to an outdoor living room. The pergola shade is perfect for summer and the lights make it magical at night. Best investment we have made in the house.

Jim & Karen

Eagle

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Deck Build Case Study: 500 sq ft Composite Deck in Eagle | Iron Crest Remodel | Iron Crest Remodel Boise ID