Levelling floor cost

[Wishingwell2022]

We’re having some building work done - kitchen and dining room knocked through, plus downstairs toilet and small boiler room - so 4-ish rooms being made into one large room.

We know the floors are really uneven, we know one corner is 6cm lower than the other, so obviously the floor needs to be properly levelled.

I have no idea of the cost though!

A friend, who does floors, said £2065, and our builder has quoted £3650, but we have no idea!

The builder said the quote is ‘to prepare the uneven floor to a level finish and supply and install a herringbone pattern luxury vinyl plank’.

Part of me thinks to get the builder to do it as he’s doing everything else, so if there’s an issue it’s down to him. But then is his quote super high?!

What is the area? If it’s to supply and install lvt as well, it sounds cheap unless the room is very small

It’s quite big, we’re having bifolds 5 ‘sheets’ (if that’s the right term?!) wide, so almost the width of the house.

It’s the area of the living room, kitchen, WC and brown/grey part next to the WC?

I'm doing my kitchen myself. Buy levelling compound, mix, smooth out. It's only one area though and my back would hurt if it was a bigger patch. The levelling compound is cheap.

If it was a smaller area, or not those rooms made into one (so different levels of floor) I’d probably have risked it, but it’s a big room, and the daylight from the bifolds will be right in the floor, so it needs to be perfect.
Plus we’ll have a new kitchen and island going in, so it needs to be level.

Yes can understand why you wouldn't take that on but it's so much money!

I know, right, it’s whether we get the builder to just do it so he’s doing it all, or just go with the cheaper option….

Levelling compound for 6cm? 6cm is a massive step up, levelling compound is usually not applied higher than 1cm, usually 3 to 5mm, and the amount you'd need to buy would be 3k alone. The builder would properly need to screed it, in different phases. If he's fitting the vinyl too, and having all materials, adhesives and floor coverings included, it sounds reasonable.

Thanks, NellyBarney, yeah he’d be screeding it too.
I think that’s why I’m thinking to just go with him, it’s more than my friend, but he’s doing everything else on the house, and I don't want the floor to be wonky! 😂