[header] How to build a handrail [title] Consult your local building authority to learn about building codes. [step] Learn whether you need a permits for handrail construction and whether there are standard specifications for handrails in your area. It is important to ensure that your home improvement projects are compliant with codes set in place for residential buildings. 
[substeps] If your work requires a permit, make sure to obtain one before adding onto your home in any way. This prevents any issues that may come about with inspections, potential penalties or violations, and issues that could come about if you ever tried selling your home in the future.