Hi Ann Chen, perhaps i can help you to answer your question. Some background of me.[ Currrently a Building Manager in foreign company. grad in building estate managment, work as draftmen,ID consultant, Cleck of Work).
1) Build a Kitchen Cabinet (5feet, gd ones) $3000 - $5000 depend on finishing and parts,, if you chose those fancy stainless steel type.. apx.500 more.
2) Change the water pipe (not pvc type) $400
3) Install water pipe for Washing Machine $200
4) Install a sliding door for kitchen (Plastic) $Bi-fold($200) glass panel $400
5) Install 15 powerpoints $90 per pieces excluding additional MCB($50 each),, but how possible you need to install so many??
6) Windows and Window Grills[ $3000. for 5 room.
7) Wiring for the whole house [41500, BUT THAT INCLUDING YOUR POWER POINT LIAO.
8) Painting for the whole house (exclude kitchen) $1000
9) Install a tick-tack door for the Housing Shelter $1k
10) Flooring - ceramic tiles for the all bedrooms and living/dining room [this one will cost u a bomb, depend on tile appx. 8k
11) Lightings [ suggest you buy own, and paid the shop some $ for installation.
I wonder you are buying a old flat that need to do such excess... those i quote is base on contractor prices, if you call ID,,, prepare to folk 10K more,...