I'll preface my comments by saying that I am a renovator in training
* Are you intending to rent this after completing or sell for profit?
* What do other similar properties have in their inclusions
* If you are going to rent out, what type of tenant (ie age, demographics) would usually be attracted to the area. (If selling, obviously purchaser).
* Is the area changing? eg gentrification
* You'll essentially make your moneyon the reno, when you buy, so buy well (stating the obvious I know)
If you are getting a sworn valuation, maybe you can get an indication from the valuer about renovated properties in the same area are selling for.
REA's are a good source of information about the features that are going to appeal. When I purchased to renovate, I got 3-4 agents in to tell me the features that tenants would look when searching for properties. I listed them all down, and tried to include them in the property update plans.
Some other random thoughts about your comments.
* For the kitchen, I would choose middle of the road finish on the cabinets, but spend the extra money on good appliances (ie Euro brands)
* Units may have small ceiling space, so downlights may not be appropriate eg overheating of transformers in small ceiling space
* Downlights are good to focus lighting on a specific area (ie under cabinets to highlight benchspace) but less effective for general lighting. There is a thread on downlights
here
* ceiling heights will impact the type of light fittings that would suit
*if you are spending $1 on your reno, you should try and get $2 back on your valuation
* Don't discount holding costs (ie the time that it takes to complete works
Would you be managing the reno yourself? Depending on the size of the works and your other work commitments, someone to manage the job may be an option.
* Have a buffer because yes everything is more than you expect (labour especially), but you may find that your mind changes on various parts of the reno, which inevitably cost more
* all renovation costs will only be depreciable, so an indication of the rate of depreciation of the various improvements would also assist in determining tax benefits from holding
* Do you have an expert, partner, member of your family or friend that you can bounce ideas off? I have found this to be invaluable. Both in terms of design and technical issues. But you may have better technical knowledge that may not make that as important.
Good luck with it.
Its stressful but a great learning experience (finance and property aside)..