The latest issue of OK magazine has interviews with EP Maxine Gray and last year's winning couple Carly and Leighton about some unknown facts from the show.
*The Home Base is in Sydney according to Gray (last year it was in Melbourne). I presume it means Seven's Redfern studios where H&A and MKR are filmed.
*Teams return to Home Base generally the day after the renovation has been completed for judging and scoring, before having 2-3 days off.
*Four of the five teams involved in the renovation stay in the same hotel but they can't socialise, otherwise they may not get to choose what items they want to keep during the renovation.
*Teams cannot return to their own houses until they are eliminated.
*Budget varies for each house (and zone) so teams cannot compare their spending.
*The team whose house will be renovated is sent to a getaway (chosen by the producers) usually 1.5 hours from the city the house is located.