Hi Kathryn

we use a lady called Judy Morris who specialises in property
she is actually based in the ACT and registered to operate in Queensland as a solicitor for property stuff

to contact

judymorris.com.au

so if your close look Judy up

Hit up the original builder

they might still honour their warranty
or great opportunity to create a communal shed like in the old carlton mid adds

as long as your neibour is covered i think you will be paying for the rest

LOL