Dining wall is 2.7m plaster board partition. Thinking 2ish k. Not had quoted yet
Boiler install 2-2.5k.
Downstairs loo is small, new toilet basin and flooring. 1k?
Bathroom 3k.
Kitchen face lift , new top and unit doors. New flooring, cooker and dish washer. No quotes yet but
Windows were best quoted at 7k after 2 companies.
Gardener quote was redic , sounds like he's got more than enough work to inflate prices on so that's a maybe.
Door gloss and skirting has yellowed so might set aside few 1000 for decorators to do hallway upstairs
Carpets
Are you sure the wall is a stud wall? I’d be surprised if it was on a ground floor, normally they are block and support the floor above. I’d it’s stud then that sounds about right, if it’s a supporting block wall then you are significantly underestimating.
Bathrooms seem on the low side, I refurbished my en-suite, bathroom, and downstairs loo over the last year and the materials alone were £2.1k, £2.1k and £625. We shopped around for everything to keep the costs down and nothing we bought was expensive. A trader will be charging a mark up and just get everything from their normal wholesaler. We were quoted for the en-suite (tiny 1.2m x 2.2m) pre-lockdown which was £4.5k.
Boiler looks about right for a straight swap, it might be a bit higher if you need additional remedial works like a power flush and magnet filter installed so they will warranty it. I really wouldn’t bother if the old one if still serviceable.
You’ll probably find the kitchen face lift isn’t that much cheaper than just replacing it like for like. The issue with replacing doors is getting something that matches the carcasses/end panels and they never match, even if they still make the same range due to fading. The risk is that it will just look like an old kitchen with some new doors and isn’t going to fool anyone if not done well.
I really wouldn’t bother touching the windows, just clean them inside and out. If any are blown then just get the glass replaced for about £100 per unit. No one is going to start inspecting the mechanisms to check they are all ok when viewing.
The glossing will have a huge impact and it will cost you perhaps £40 in materials and a few weekends to do yourself. I wouldn’t get a painter in, it’s seriously labour intensive and really not that difficult. It’s not like your going to have to live with any dodgy bits of finish and viewers just don’t look at that kind of detail.
Carpets can have a big impact if they are dirty or thread bear. If there just old/dirty then try a rug doctor first, you might be able to get away with just a clean. No need to go fancy on a replacement and you could do the whole house in something inexpensive for £2k. Just pick a neutral colour like cream, beige or grey.