An exterior stairway may serve as the house entry or as access to an elevated porch or deck.
You will find the cost to install an exterior stairway will vary with total stairway rise, stair width, material, and labor rate.
In the following table the Labor Cost figure is what the able DIY person should expect to save by performing the complete installation.
Exterior stairway (porch access): treated pine-wood structure and tread boards with total 45”of rise in 6 steps with riser plates, concrete footing, and redwood handrail.
|Item||Unit Cost||Quantity||Line Cost|
|Stairway: douglas fir stringers (3); pine step (36" wide x 12" deep) and riser boards (7-1/2" tall); common nails and stainless steel fasteners.||$25||per stair||6||$152|
|Handrail: 7' long with balusters, pine lumber, common nails and stainless steel fasteners.||$39||per foot||7||$273|
|Concrete footing: 3 cu.ft. (36" long x 12" deep x 12" wide) mixed on site by hand, with reinforcing steel.||$158||per cu.yd.||0.33||$52|
|Material Cost||$477||per job||1||$477|
|+ Labor Cost (carpentry)||$36||per hour||8||$288|
|+ Labor Cost (concrete)||$36||per hour||2||$72|
|Total Cost||$139||per stair||6||$837|
Other considerations and costs
- Taxes and permit fees are not included.
- Pre-fabricated kits may be available, however the exterior installation may require customizing that could negate the potential savings of a pre-fab kit.
- This project requires a high level of carpentry skills, particularly in cutting the structural pieces to a possibly uneven terrain-landing situation, and furthermore joining many separate pieces and a handrail with attractive and secure results.
- Partial DIY is possible by taking on the minor concrete work.
- Craftsman Estimator Costbook, complete series year 2015.
- Latest prices found on Home Depot and other vendor Web sites.
- Literature review of DIY Web sites.