I think you need to look at the whole house not just the ground floor. I can see why the bathroom on the GF exists because you have 4 beds and only 1 bathroom upstairs so someone installed the bathroom directly below using the same pipework etc., Do you really need that tiny bedroom upstairs at the front of the house? it would make a great en-suite to your master bedroom and balance your home better. You should speak to an estate agent to understand if this will impact the value of your home - personally I doubt it would as the room is very small. In the basement area with utility area, I would add a loo - great for kids in the garden or workmen. Then you could take down the wall between the dining room and kitchen. This is just my view but I am sure others will have better ideas. On your budget of £15k and if you are able to do some DIY you might be able to do it but I think it will be tight. If the budget were higher I would probably move the entire kitchen diner into the basement and take advantage of accessing the garden from that point too.

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It would be very expensive to replace the large surface of paving slabs and a false economy as they are only in need of a good clean. Any garden does need upkeep, you should focus on sorting the out of control ivy and overgrown bushes in the borders and the overgrown slit head lavender. A visit from a qualified gardener to prune and shape and guide you on how to maintain plants going forward would be a good use of funds. A few weekends of hard graft would get things in shape and allow you to see what needs done to create the types of garden see in your inspirational images. You will need to assess the damage to the collapsed sun umbrella, the sofa cushions and bird table etc to see if any of these items are salvageable. Probably all just need a good clean. The wooden furniture needs upkeep with a good wash then once dry an oil to preserve the wood and make it look as it did when purchased. The patio will need treatment with black spot remover ( not cheap but amazingly good at its job), then a good wash with a power wash - a rotating head attachment with the internal brushes is kinder to the stone surface than the lance. You could use funds to get this done by a trade person. You may need to spend a further weekend re grouting missing grout (£10 quid bag from DIY stores ). Most of us are viewing our own patios at this time of year and getting organised for the yearly big spring clean - join in! All of your patios in the images are newly made - all will require yearly maintenance like your existing current patio. You have the bones of a fantastic professionally designed but neglected area. Don’t rush to replace, it just needs its yearly spring clean. We all need to be maintaining and fixing rather than buying and replacing to help reduce landfill and to save our hard earned cash!

The green is garden, the grey squiggle are the walls i was intending to take down. These two walls are not load bearing. I did have a plan but due to the electricity cupboard which was assessed to be ok in the bathroom now I am told thats not allowed. Need a bathroom not just WC as I cant get an ensuite upstairs without huge cost/ planning permissions and i need a wet shower room(already have a family bath upstairs) The floors can come but this is a very tight budget project so as close to were existing water pipes is more cost effective. @rinked