a, Uyilo lwemveliso lukhethekile, uyilo luhlukile, uphawu lwerabha olungalinganiyo lunokuxhonywa phantsi, ilogo yoshicilelo inokuyilwa, umbala ucacile, uyilo lucacile, umfanekiso uyinyani.
b, Ukugqunyelelwa okungatyibilikiyo kulungile, kwaye kukhululekile ngaphandle kokushiya iminwe.
c, isempilweni kwaye inobuhlobo nokusingqongileyo, ayinavumba likhubekisayo, iyaxhathisa inyikima, iyaxhathisa kukungunda, ikhusela ilanga, iyaxhathisa kwaye imtyibilizi, imelana nokwaluphala, ikwazi ukumelana nomhlwa, ihlala ixesha elide;
d, inhle kwaye inhle, ithambile kwaye ikhululekile, inokubekwa yodwa, i-soundproof i-insulated kwaye kulula ukuyihlamba (inokuhlanjwa ngamanzi ahlambulukileyo kwaye ingasetyenziselwa ngokuphindaphindiweyo);
f, ubungakanani bemilo bunokuba bubugovu, amandla okukrazula aphezulu, ukucaba kuhle, ukumelana nobushushu kuphezulu;