@kmkane... The "old thread" comments, at least from ME... aren't for any other reason than letting some contributors know, that the advice they might believe they are giving, may be moot. I know that when I 1st became involved on Houzz, I was glad when someone indicated that I may be addressing a question which had probably been answered months (if not years) ago. Helped me "learn" to check the original posting date before blathering on about an issue someone was no longer interested in.

Get the professional sander guys in to repair the living areas and kitchen but don't go too dark with the stain as it will kill the lovely grain in the matai. I'm thinking a couple of tones richer than the timber knots showing in your photo, definitely no yellow tone at all. In NZ stepping on to carpet especially in a kiwi winter is so much nicer than a cold floor board shock!!! A nice area rug for the lounge and you're done.

Sanded and polished timber floors have a evergreen classic appeal that never goes out of fashion. Carpet and other floor coverings do have a tendency to have a style that is relevant to a particular period in time. Have you ever walked into a home and thought the carpet, lino or tiles were from the 60s, 70s or 80s? Natural timber floors never date and you can easily update the look of your home with warming floor rugs and furnishings. Carpeted homes may pose problems for Asthmatics and those that suffer from allergies. There are a few environmentally friendly coatings available if you do choose to sand and polish your floors. This link will offer some insight into your floor coating options. http://budgetfloorsanding.com.au/timber-floor-finishes/ All the best with making your decision

Need to get our solid Jarrah flooring re-done i.e. sanded and polyurathene - is it possible to colour to more of a brown rather than the reddish colour? I suspect not - but just asking the question?