Werb
improve
modernize
update
bring up to date
make better
ameliorate
reform
rehabilitate
recondition
refurbish
spruce up
renovate
rejuvenate
overhaul
bring up to code
improve
modernize
update
bring up to date
make better
ameliorate
reform
rehabilitate
recondition
refurbish
spruce up
renovate
rejuvenate
overhaul
bring up to code