Last reviewed
July 4, 2026
Planning guide
How to plan a wheelchair ramp for a home
Plan a wheelchair ramp by measuring rise, run, slope, landing space, materials, handrails, weather exposure, and permits.
This website provides educational information only. It is not medical, legal, construction, or financial advice. Consult qualified professionals before making major home modifications.
Ramp planning is five decisions in a strict order: measure the rise, apply the 1:12 slope rule to get the required length, fit that length into the yard as a straight run, L, or switchback, choose the material and rail package, and clear permits. Skipping straight to material quotes is how families end up with a ramp that is too steep to use safely.
The 1:12 rule, one foot of ramp per inch of rise, comes from the accessibility standards and exists because steeper slopes exhaust self-propelling users and endanger caregivers pushing chairs downhill. Landings, level platforms of about five feet, belong at the top, the bottom, and every turn, and they consume yard space the slope math alone does not show.
Plan
Ramp planning steps
- Measure total rise and available run before choosing a ramp type.
- Apply the 1:12 rule and add five-foot landings at the top, bottom, and turns.
- Check whether the route needs turns, landings, or switchbacks.
- Review door swing, threshold height, drainage, snow, and lighting.
- Compare temporary, modular, and permanent options.
- Confirm permits, HOA rules, and landlord permission before installation.
Before you commit
Questions to ask
- What is the measured rise in inches, and does the yard hold that many feet of ramp plus landings?
- Will the door swing clear over the top landing with a chair parked on it?
- How will rain, ice, and leaves be kept off the surface, and who maintains that?
- Should this be modular aluminum that can move or be resold when the need ends?
How to use this information
Data note
This guide is educational planning content. It is not medical, legal, construction, or benefits advice, and program rules change, so verify details with official sources.
Primary sources for this page
Ranges and rules on this page draw on the official sources below. Program amounts and standards change, so confirm current details on the source itself before acting.
Frequently asked questions
How do you calculate the length of a wheelchair ramp?
Measure the vertical rise from ground to threshold in inches, then plan one foot of ramp per inch of rise, the 1:12 standard. A 22 inch rise means about 22 feet of ramp, plus level five-foot landings at the ends and any turn.
What is the best layout when a straight ramp does not fit?
An L-shaped or switchback layout folds the required length along the house, using a level landing at each turn. It uses more total material but fits compact yards and keeps the slope legal instead of steepening it.
How steep can a wheelchair ramp be at a private home?
The 1:12 slope is the accepted maximum for independent use. Some codes tolerate slightly steeper short ramps with assistance, but every step past 1:12 trades safety, and vendors proposing 1:8 to save money should be questioned.