and ah ) ▁respectively . ▁A ▁" L azy ▁Day ser " ▁skill ion - ro of ed ▁week end ▁c ott age ▁was ▁also ▁advert ised . ▁ ▁A ▁number ▁of ▁models ▁of ▁house ▁were ▁produced ▁over ▁the ▁years , ▁the ▁known ▁ones ▁including : ▁H ib is cus ▁models ▁number ▁ 1 , ▁ 2 , ▁ 5 , ▁ 6 , ▁ 7 , ▁ 8 , ▁ 9 ▁and ▁ 1 0 ; ▁Co or an ▁models ▁ 3 , ▁ 4 , ▁ 5 , ▁ 6 , ▁ 9 , ▁ 1 2 , ▁ 1 5 ▁and ▁ 1 7 ▁( model ▁No . 3 ▁being ▁the ▁most ▁popular ); ▁Trop ical ▁ 1 ▁and ▁ 2 ; ▁plus ▁gar ages , ▁the ▁one ▁bed room ▁models , ▁and ▁the ▁Laz y ▁Day ser ▁week end ▁c ott age . ▁There ▁were ▁also ▁variants ▁within ▁the ▁models ▁- ▁for ▁example , ▁models ▁ 3 a ▁to ▁ 3 e . ▁ ▁The ▁market ing ▁of ▁Alfred son ' s ▁pre - cut ▁houses ▁through ▁Q PS ▁catalog ues ▁reflected ▁the ▁housing ▁short age ▁and ▁concurrent ▁building ▁price ▁increases ▁that ▁occurred ▁in ▁Australia ▁after ▁World ▁War ▁II . ▁Thanks ▁to ▁a ▁l ull ▁in ▁house ▁building ▁during ▁the ▁Great ▁De pression ▁of ▁the ▁ 1 9 3 0 s , ▁there ▁was ▁an ▁unders upp ly ▁of ▁houses ▁even ▁before ▁World ▁War ▁II . ▁National ▁Security ▁Reg ulations ▁issued ▁in ▁February ▁ 1 9 4 2 ▁limited