hi bro,
below is my comment:
1) break old tiles and lay new tiles perhaps 1x2 ft or 2x2 ft for a space of 1200 sqft

Ans: Estimated cost to hack old tile is RM2400 and lay new tile (tile owner buy) is RM4800. If you got quotation above this value then a bit expensive.
2. Completely re-do both my toilets with new tiles, new toilets bowls, shower screen, sinks etc. Currently both are split i.e. toilet and shower are in two separate room side by side with a small area between them. Would like break and combine the toilet in master bedroom into one and the below one to remain as is but change the entire interior with new furnishing

Ans: Since you do no mention total area space, i will give you cost for laying new tile is RM4-RM4.5 sq ft (inclusive cement,glue etc, tile owner buy) use this guide/tips for you and others forumer.

3) building concrete table tops in kitchen say L shape about 6 feet width and 10 feet length. Perhaps also a concrete table top in the kitchen about 3x6 feet. The mentioned above is to be fully tiled.

Ans: normally table top width is 2 feets, R u sure 6 feets??... I will calculated on 2 feets basis. Total length is for your case is 13 feets, estimated cost with tile (tile value is about Rm20 per piece) RM1100.

4) any idea how much would it cost for me to grind and polish my existing wooden flooring which include the stairs and also top floor room. Total area will be circa 700sqft

Ans: sorry bro, i dont have experienced in wood floor..and i do not interested in wood floor so i dont do research.sorry again.

5) To build a wall between kitchen and dining area somewhat a divider - a suggestion would be appreciated about 8ft length up to the room which is about 10-12 ft high

Ans: Estimated cost is RM800.

good luck bro...anything just inform me.

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Added on September 20, 2012, 2:05 pm
Hi bro,

It is reasonable if included door,window, wiring and tile. My estimation is RM15K only excluding grill and kitchen cabinet.

good luck