How do I bathroom / kitchen / extension? etc.

These are the labour costs (looks like it's ex-VAT which I'd not factored)

Existing kitchen base units and worktop removed £264.

• Existing tile splash back removed £118.
  
• Ceiling boarded over with new plasterboards £382.
  
• Ceiling and wall section (where the fridge was and splash back section)
  plastered £567.
  
• Water supply and waste pipe for the washing machine and tap/sink
  adjusted to adapt new position £764.
  
• Existing water heater repositioned and replaced with new (including
  rerouting the pipes; instant under sink water heater to be supplied by the
  client) PC SUM £466.
  
• Ducting for kitchen extractor fan supplied and installed £362.
  
• 1no socket plate replaced with new (electrical fittings to be supplied by
  the client) £15.
  
• 1no kitchen extractor fan fuse spur 1 st and 2 nd fix (electrical fittings to be
  supplied by the client) £196.
  
• 2no existing kitchen ceiling lights replaced with new (electrical fittings to
  be supplied by the client £54.
  
• New kitchen base units and laminated/wooden worktop installed (new
  base kitchen units and associated accessories to be supplied by the
  client) £1,289.
  
• Storage front remodelled as necessary - TBC
  
• Wall section between wall and base units lined with new splash back
  board (splash back board and finish trims to be supplied by the client)
  £373.
  
• Washing machine and freestanding electric cooker/oven and extractor
  fan installed and connected (appliances and associated accessories to
  be supplied by the client) £246.
  Ceiling and walls and woodwork prepared and painted (white finish;
  paint to be supplied by the client £1,089.
  
• Licensed waste disposal £330.
  Total: £6,515
  
  

Optional:

• Existing kitchen wall units removed £185.
  
• New kitchen wall units installed (new kitchen wall units and associated
  accessories to be supplied by the client) £766.
  Total: £951
  
  

All above prices are subject to VAT at current UK rate.

"Parts"

1 CLW5178 Clerk Gls White 900 CC 3 Standard Dwr Base White Cab 340.05 F
1 CLW5221 Clerk Gls White 500 CC HiLine Base White Cab 149.30 F
1 CLW5231 Clerk Gls White 600 CC HiLine Base White Cab 166.30 F
1 CLW5428 Clerk Gls White 500 CC 900 Tall Wall White Cab 145.00 F
1 CLW5431 Clerk Gls White 600 CC Full Height Wall White Cab 127.43 F
2 CLW5438 Clerk Gls White 600 CC 900 Tall Wall White Cab 361.82 F
1 CLW5445 Clerk Gls White 900 CC 900 Tall Wall White Cab 276.09 F
1 CLW560G Clerk Gls White 600 Built Under Oven Housing Base - Low Shelf White Cab 92.68 F
2 CLW591A Clerk Gls White 30mm Cornice/Pelmet Square Profile 2.4m 63.44 F
3 CLW5920 Clerk Gls White Continuous Plinth 2.75m 95.70 F
5 CLW5933 Clerk Gls White 910 Base Decor End 206.10 F
4 CLW5947 Clerk Gls White 932 Tall Wall Decor End 150.52 F
1 GIR0029 Zipbolt Slim Worktop Connecting Bolt 22mm (Pack of 3) 10.27
1 HBH1700 Bosch Black Touch Ctrl 4 Zone Ceramic Hob 60cm 239.29
1 HBH3401 Bosch S/Steel Single Fan Oven 60cm 205.71
1 HYH8102 Moulded Silver Cutlery Tray 900mm 26.37
1 LAM2304 Lamona S/Steel Canopy Extractor 60cm 85.09
1 PLU1002 Plumbing Kit for 1.0 Bowl Sinks with 1 x Appliance Trap 20.18
4 SDH2461 Quick-Step Moonstone Rigid Vinyl Tile 1.848m2 180.00
1 SNK9830 Lamona Easton S/Steel 1.0 Bowl Sink and Waste 251.42
1 TAP3476 Radstone Brushed Nickel Swan Neck Dual Lever Monobloc Tap 126.31
2 WHT6460 Matt White Square Edged Worktop 3m 22mm 433.46 F
2 WOK1097 Malibu Grey and Storm Blue Aluminium Backboard 3000mm x 750mm 734.16
1 WOR9068 White Worktop Jointing Compound 8.62
1 ZZD39 Delivery 99.00