Here's some sample prices I'm quoting from an in-law's costing sheet (don't know kung may patong or discount, ha...)

Portland Cement - 170 per bag
Sand - 45 per bag
Gravel - 60 per bag
10mm steel bars - 120 per piece
Hollow Blocks - 8 per piece
Waterproofing - 520 per gallon

Of course, you can follow Raikonen's link to the Construction thread to get a good idea about how to estimate your cost per square meter... but it will be different for plain remodelling and slabbing.