1) Hacking of wall $3 psf
2) Construct new wall $10 psf
Reply: Mine was quoted in lump sum...can't comment here..

3) Solid door $ 950 per unit ( not incl lockset)
Reply: was quoted RM600/unit for solid door

4) Concrete slab $10 psf
Reply: Don't understand this... the slab only? Use for what? hehe...

5) Install wall tiles to full height $5 (tiles not provided)
Reply: Same. RM5/sqft

6) Grill $15 psf ( for the back yard)
Reply: Lump sum payment as well...

7) Metal door for back yard $650
Reply: Mine is M.S Grill 5.5ft(H) x 20ft (W) with M.S Door 1 unit - RM1436

8) Structure at extended area - new footing $ 500 per no
new column $650 per no
new ground beam $30 psf
new roof beam $30 psf
new roof $317 psf (with tiles etc)

Reply:
Porch - 5ft(H) cement brickwall with 100mm base - RM50/ft run
Backyard - 125mm cement brickwall 5.5ft(H) with 400mm ground beem - RM82.5/ft run

9) Hacking of existing marble floor and install new tiles $5.50 (tiles not provided)
Reply: RM8.50 (not including tiles)

10)Remove existing roof tiles and install new $5500 (total)
Reply: Did not do.

11) Paint work $5500 (whole house when completed in and out)
Reply: RM6k using JOTUN paint. Same whole house. Double storey terrace.

Bro...i think more or less the same la...furthermore, our location is different so pricing maybe different also...hard to compare apple to apple...