My plan:
I am actually pretty good where I am right now! I live about 2 hours from brisbane and are near the beach, so if need be I can find boats to use. The town itself is pretty low in population so not too many zombies unless masses of them roam from Brisbane, which is highly unlikely.
My house is a two story with compact exposed wood stairs, and is situated on a steep hill hidden from most people that are looking right at it! Really!
The only real enterance to the house is by driveway (which is long, about 10 meters steeply uphill) and is large enough to allow a truck to pass with about 30 cm to spare, so its pretty narrow compared to other driveways. The entire house is surrounded by a wooden fence higher than a full grown man. The veranda from upstairs is quite big and is low enough that I (about 7 foot tall) can hang from it and drop to the ground without harm, but is out of reach otherwise excepting by the carport via some rocks and a jump.
What I do is take all the supplies upstairs (plenty of room for even 10 people!), arm myself from the shed with a axe and look for others nextdoor over the fence. If noone there, I scavenge what I can, take it back to my place and once I find enough people and stuff I chop away the stairs with the axe. Completely safe and if I wish, I can use furniture to barricade windows, doors and the driveway from zombies. If I need to leave, I just hop over the fence to safety! (I have kept the houses and yards clear beforehand!) I can then go look for a boat or drive inland after getting transport.
Easy.