The building has been altered several times since its construction.

The building has been altered little since its original construction.

The building was only slightly altered from its former use as a public school.

The building was altered in 1925 so that the first floor could be used as a commercial space.

"But I believe the building was altered in a negative way."

Both buildings are original, but have been altered over time.

The building has been altered very few times since it was originally built.

Under the rules, a building could not be altered in any way that made it less accessible.

The building at 165 West 23rd has been totally altered.

The building has been altered and expanded over the years.