Received this quotation from a renovation contractor. Any comments?

Descriptions:-
1. To hack party wall between living & dining, and dining & wet kitchen - Lump Sum ("LS") - RM400.00
2. To hack external wet kitchen wall for extension work - LS - RM300.00
3. To hack existing wall tiles at wet kitchen area - LS - RM500.00
4. To hack existing wall at first floor bedroom 2 including of removing - LS - RM300.00
aluminium windows
5. To hack partly beam height and remove main entrance main door & door and reinstall back door & door frame including side brickwall & plastering - LS - RM500.00
6. To remove second floor family area's aluminium sliding door and demolish both side brickwall - LS - RM100.00

7. Backyard extension works
a) Foundation works - LS - RM2,500.00
b) Floor beams and slab - LS - RM2,500.00
c) Columns @ 4 nos - LS - RM1,500.00
d) First floor beams and slab - LS - RM5,000.00
e) First floor columns @ 4 nos - LS - RM1,500.00
h) First floor roof beams - LS - RM1,500.00

8. Ground and first floor brickwall including plastering - LS - RM4,500.00

9. To erect second floor balcony brickwall including plastering - LS - RM350.00

10. To supply and install new MHW timber door frames and timber plywood door for new wet kitchen (3'-0" X 7'-0") - 1 no. - RM350.00

11. To supply and install new MHW timber door frames and timber plywood Door (3'-0" X 7'-0") for first floor bedroom 2 including brickwall and plastering - 1 no. - RM500.00

12. To supply and install the following new white colour powder coated windows to:-
a) 5'-6" X 6'-0" at wet kitchen - 1 no. @ RM1,100.00 - RM1,100.00
b) 5'-6" X 8'-0" at dry kitchen - 1 no. @ RM1,500.00 - RM1,500.00
c) 5'-6" X 8'-0" at first floor new extension area - 2 nos. @ RM1,500.00 - RM3,000.00
d) 5'-6" X 4'-0" at first floor bedroom 2 - 1 no. @ RM750.00 - RM750.00
e) 8'-6"X 5'-6" at second floor balcony area - 1 no. @ RM1,600.00 - RM1,600.00

13. To erect new exposed treated MHW timber roof truss with transparent polycarbonate roofing sheet without ceiling but c/w PVC gutter and UPVC rain water down pipe - LS - RM4,200.00

14. To remove the existing dining area floor tiles - LS - RM300.00

15. To supply labour and tiles to lay 2'-0" X 2'-0" at dining area and new dry kitchen area similar to living area - 295sf @ RM14.00 - RM4,130.00

16. To supply labour and tiles to lay 2'-0" X 2'-0" at new wet kitchen area with colour matching to dry kitchen area - 90sf @ RM11.00 - RM990.00

17. To supply labour and tiles to lay 2'-0" X 2'-0" at new first floor extended area - 160sf @ RM11.00 - RM1,760.00

18. To erect 22" X 12'-0" long concrete table and base including 2'-0" X 2'-0" tiles w/o sink and tap - 1 no. - RM1,500.00

19. To re-locate existing wet kitchen water tap and waste outlet to new extended dry kitchen area - LS - RM150.00

20. To provide new water tap and waste outlet for new wet kitchen - LS - RM300.00

21. To chip off external wall at bath 4 toilet to receive tiles - LS - RM200.00

22. To supply labour and tiles to install 2'-0" X 1'-0" white colour tiles to new dry kitchen - 260sf @ RM10.00 - RM2,600.00

23. To supply labour and tiles to install 2'-0" X 1'-0" white colour tiles to new wet kitchen - 250sf @ RM10.00 - RM2,500.00

24. To supply and lay timber strip laminate floor to second floor balcony area - LS - RM600.00

25. To supply labour and paint to paint external wet kitchen wall and first floor extended internal and external brickwall - LS - RM1,500.00

Grand total - RM51k

Note:
i) Rate for 2'-0" X 2'-0" tiles is charged at not exceeding RM 30.00/pc for dry kitchen and dining area
ii) Rate for 2'-0" X 2'-0" tiles is charged at not exceeding RM 22.00/pc for concrete table and base
iii) Rate for 2'-0" X 2'-0" tiles is charged at not exceeding RM 22.00/pc for wet kitchen and first floor extended area
iv) Rate for 2'-0" X 1'-0" tiles is charged at not exceeding RM 9.00/pc for wet kitchen and dry kitchen wall