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Considerations outside the home include site layout, garages, ramps and raised garden beds.

Some site layout factors to consider.
Single garage layout.
Double garage layout.
A ramp on falling ground may need to be turned back into the slope to reach the ground.
A ramp on rising ground will be shorter.
Ramp and handrail dimensions.
Timber ramp built against an existing house.
Concrete ramp built against an existing timber-framed house.
Raised garden bed.