Looks like gas water heaters. If so, I am surprised this doesn’t happen more often.
This appears to be the one: http://www.apt-guide.com/nrv/listing/huntcs.html
Google maps puts it on Patrick Henry Lane.
“Features: ... individ. controlled central heat & A/C, security dead bolt locks, smoke detectors, full size W/D avail., lg. storage rooms, trash removal. ...24-hour emerg. maint. On-site property mgt.”