No need to enter the premises unless your doing your shopping. The cache is on the former site of Stevens Motors Parts & Workshop & can be found by solving the following:
5ru6o32f6dn69a3de4r123dn481u3h96e85er42ht230t58ni47o8pr25u41o35fytf78if s78e51e562rg9e7d58ru45of125y69tne47ve9sd20na65d5e8rd41nu48h9e78no63t7sa6e 54o87w14t215yt306xi857s7d4na12 de0r67dn74uh24ru4o8ft65n0io756pe98v87le7wt96s8e8e20rg75ed659en10o3yt41r8o7f8h21t85u57o9s236
The Cache:
The cache is an eclipse container, containing a log.
The final will have lots of muggles around so you will have to be quick on retrieving the cache. There is no need to open the wiring cover.
You can check your answers for this puzzle on GeoChecker.com.