Where . where is Delaware again ? <| sep |> Yeah . Joan Stern ran a poor campaign , but it ' s quite highly illegal for her to run off with the cash . <| sep |> Malcolm Turnbull insisted housing affordability was overwhelmingly a question of supply . Yes Mal , very insightful . Using a selection of Sydney suburbs as an example let ' s take a quick look at how supply is doing updated from when I did the same thing a week ago . Just before I go on , note that this fits in with evidence across the market including falling or flat rents , record low rental yields , record low income growth and according to APM a drop in Sydney price growth from 19 % to just over 2 % annually in a single year note this trend is echoed very closely by the ABS ' s median and Residex ' s repeat sales methods the numbers and general direction are very close . Note also that the approx 10 % y . o . y growth data for Sydney which shows growth rising rapidly in the opposite direction to all other data providers which is oftenalmost always quoted by the media is CoreLogic ' s growth data , which compares prices using two completely separate data methodologies after switching in May . Its data claims there has been a huge spike in price growth after showing the same flatfalling trend as other providers . The sharp spike followed its switch from a median to a hedonic index , and it includes the previous flat period under the median as part of this return to growth . The RBA dumped them as a data provider as a result in August . Personally I ' d rely on APM a median as being far more reliable if only for the fact it isn ' t comparing two data methods and pretending they are one . And again , their data fits with the whole picture we seem to be seeing . One of a market that has ground to a near halt as it ' s flooded with new development . Anyhow , here we go residentialblacktownrrn in this suburb we have 221 listings to 57 sales in four weeks through the peak of Spring , which is traditionally the part of the year with the most reliable , competitive and rapid sales . Listings far outweigh sales . For those who did see me doing this last week , yes , this suburb ' s listings have increased by 19 and sales by 1 . The gap is getting wider . residentialdoonside 12740910 33 to 7 . Mt D r u ittresidentialmountdruitt 12746710 66 to 23 . The Pondsresidentialtheponds 12921210 117 to 30 . So one extra sale since last week . residentialcamdenrrn 14 to 3 . Oran p arkresidentialoranparkrrn 170 to 6 . That ' s 8 additional listings added , with no additional sales , in a week in one of the most oversupplied areas , I hope that ' s not a trend . residentialpictonrrn 38 to 12 . residentialblaxlandrrn 23 to 10 . residentialpenrithrrn 85 to 26 . Oxley Parkresidentialoxleypark 12777610 25 to 9 . residentialmascotrrn 111 to 17 . residentialbotany 12832210 82 to 17 . residentialgleberrn 32 to 17 . residentialchippendale 12880510 108 to 9 . r esidentialdarlinghurstrrn 38 to 26 . residentialbalmain 12785710 35 to 12 . residentialstrathfield 12698110 90 to 27 . residentialhomebush 12844610 85 to 13 . residentialzetland 12689210 84 to 12 . residentialmanly 12689210 32 to 36 go Manly ! Demand kicks supply ' s butt ! residentialcollaroyrrn 13 to 19 go Collaroy ! residentialhornsby 12810010 81 to 28 . Box Hillresidentialboxhillrrn 194 to 10 . residentialcarlingfordrrn 104 to 29 . residentialpymble 12883010 58 to 16 . Lane C overesidentiallanecoverrn 118 to 53 . Macquarie P a r kresidentialmacquariepark 12842310 41 to 8 . residentialchatswood 12853310 115 to 42 . residentialkirribilli 12729610 10 to 9 . North Ryderesidentialnorthryde 12787010 35 to 10 . So , as with last week there is a lot on the market and listings far outweigh sales pretty much everywhere . Mal , that ' s a problem well , it is a problem assuming you expect houses to remain profitable , as our negatively geared investors absolutely require them to be . As you say , supply is going to determine affordability and I ' m not sure it ' s moving in the direction you ' re expecting .