Yes, certainly one may find a lot of texts on the south west facing houses criticising this direction as the most negative direction but that may be the case in northern hemisphere but in southern hemisphere the case is different. Therefore, before accepting any superstitious connotation one should hire the services of a vastu consultant because vastu for SW facing house is a different case and looking at other internal factors the site may be either positive if follow the vastu rules of grids and the site may be a normal one.
Why a south west facing houses or the ware houses are seen with doubt in northern hemisphere is a different case but the outlook of looking at the same south-west facing house is totally different. But in this case the professional expertise of a matured vastu consultant should be availed for 100 % clarity and all the doubts may be clear in time.
South West Facing House Vastu defines that sometimes we think that a particular item is good but its results are negative. So is the case of south-west facing homes which may be in Vedic Vastu a very serious entry, facing or main door of a house but if we talk logically then south-west entry or main gate is not serious in the Southern Hemisphere. Now let us talk about the Vastu for House which is in fact a South-west facing House Vastu then the simple and almost costless remedy should be done which is very easy. South-west facing house Vastu in Southern Hemisphere needs some careful handling because there should be no Vastu violation in Southern Hemisphere. Vastu in Southern Hemisphere speaks about many types of properties like Vastu for Home for scientific Vastu in Australia, New Zealand, Africa, Indonesia, Vastu for House.
Certainly, Vastu is the science of directions and vibrations. Vastu in Southern Hemisphere that includes cities located in the Southern Hemisphere like Jakarta, Perth, Brisbane, Sydney, Canberra, Port Louis, Victoria, Queensland, New South Wales (NSW), Indonesia etc. and a lot of other countries like , South Africa, New Zealand, Mauritius, Australia, Chile, Brazil & Argentina etc. are the places which should follow all the Vastu rules meant for the Southern Hemisphere Vastu guidelines so that the home should be a positive home.