We are doing the exact same thing at the moment.
Our layout is ever so slightly different to yours as your current kitchen is our current dining room and your "reception 2" is our current kitchen- we're switching them. Our sizes are almost identical for the lounge and kitchen area
We were quoted £4.5k to:
- Remove current kitchen
- Take out the wall (supporting wall, so included getting building regs etc)
- Move all associated electrics and plumbing (repositioning radiators, relocate water for taps/dishwasher/fridge)
- Plaster and making good of all walls, ceilings and flooring, but no painting/decorating
We also got a quote for 1 contractor to come in and do the lot.
As well as the above that included:
- Installing spotlights throughout new kitchen diner
- Adding hanging lights above new breakfast bar/island
- Fitting whatever kitchen we chose
- Laying new flooring throughout (which we were to provide)
- Removing a log burner and blocking up existing fireplace.
- Sourcing and installing 2 sets of aluminium bifolds
That quote was £21k
£15k without the bifolds
That particular quote seemed like a massive jump up from the £4.5k quote, so we didn't go with that.
Quotes excluded the cost of the kitchen & flooring as we've already chosen that.
Our flooring for that space was approx £2, which included limestone flooring for the kitchen (~£600) and LVT for the rest of the downstairs (~£1300, on sale)
Kitchen quotes were between £7100 (B&Q, no fitting, included dishwasher)
£9.5k wren (with fitting, but no appliances)
£11k howdens (no fitting, included dishwasher)
£8.9k from DIY kitchens (no fitting, but included dishwasher and an American style fridge freezer)
Above kitchen quotes were all for shaker style kitchens with quartz worktops.
Hope that helps a bit!