Well, the ICC/ANSI A117.1 and Section 1107.6.2.1.1 requires 2% (If more that 20 units total per structure) of the residential units to meet Type A accessibility. That means unless you can get all of the necessary units on the ground floor on an accessible route you will need an elevator.
Don't agree. An elevator should never be required for apartments for the above reason.
1107.7.1
Structures without elevator service. Where no
elevator service is provided in a structure,
only the dwelling
units and sleeping units that are located on stories indicated
in Sections 1107.7.1.1 and 1107.7.1.2 are required to
be Type A units and Type B units, respectively. The number
of Type A units shall be determined in accordance with
Section 1107.6.2.2.1.
1107.7.1.1 One story with Type B units required. At
least one story containing dwelling units or sleeping
units intended to be occupied as a residence shall be
provided with an accessible entrance from the exterior
of the structure and all units intended to be occupied as
a residence on that story shall be Type B units.
1107.7.1.2 Additional stories with Type B units. On
all other stories that have a building entrance in proximity
to arrival points intended to serve units on that
story, as indicated in Items 1 and 2, all dwelling units
and sleeping units intended to be occupied as a residence
served by that entrance on that story shall be
Type B units.
1. Where the slopes of the undisturbed site measured
between the planned entrance and all vehicular
or pedestrian arrival points within 50 feet (15
240 mm) of the planned entrance are 10 percent
or less, and
2. Where the slopes of the planned finished grade
measured between the entrance and all vehicular
or pedestrian arrival points within 50 feet (15 240
mm) of the planned entrance are 10 percent or
less.
Where no such arrival points are within 50 feet (15
240 mm) of the entrance, the closest arrival point shall
be used unless that arrival point serves the story
required by Section 1107.7.1.1.