Reconfiguring an extension

Question

Hi, I am in the process of buying a house.
The house has been extended, and there is a wall running through vertically through this extension (towards back of house). 
We are looking to knock out the majority of this wall (imagining need structural engineer, potentially beam installed) 
We would then be looking at adding in two small rooms (a downstairs small WC and small utility) and add a new kitchen into this. 

On top of this we will likely need to replace flooring.
Given the reconfiguration I also could assume we would need to work with an electrician to ensure we have new sockets in the right places etc. 

The two rooms to knock through into each other are approx 7.5m x 3.4m & 5.8m x 2.2m 

Has anyone encountered similar jobs and know a rough ballpark on what I can expect cost wise & anything I haven’t considered? 

Thanks in advance

Lee · Answer

Good Afternoon,

I would suggest getting a qualified builder to have a look before appointing a Structural Engineer as they should be able to tell you if it is a supporting wall or not. Worst case you should allow £700-£950 for the Structural Engineer and £1250-£1500 for the removal (including removal of the waste).

Putting new walls, plastering including making good the existing £3000-£4500

Electrics - are subject to the existing including the fuse board so more difficult to predict however £1000-£2000 should cover the cost providing you do not need a new fuse board.

Plumbing/WC - This will depend on how you can connect to the mains for the waste and where the hot/cold water will come from. This is likely to be minimum £3000 to a maximum £6000 including digging out and laying new waste pipes.

All in all, I would think you will need to spend £10,000-£15,000.

I hope this helps.

James · Answer

Even though it is a large extension, if it is a single storey it is likely that central wall is not load bearing. Typically we would just build the shell in brickwork, then put the roof joists on, then form any rooms within this shell with stud work.  It is possible the builder formed the roof joists over the stud in which case this wall would need to be replaced with a steel anyway. The biggest factor in your build will be the distance to the drains for your proposed w/c.  It sounds like top end £10k for the building works, as long as you don't propose anything too fancy in the utility.

Simon · Answer

Hi 
Would need to view works to give you a ball park figure, happy to do so , advise and quote would be free of charge, if interested contact me 
Simon

Chris · Answer

Yes structual engineer required to calculate steel sizes then refurbishment electrics plumbing  plastering decorating flooring etc on this size project estimate 22000 pounds depending cost of kitchen when you hv bought property would be more than happy to give you a free no obligation quote hope thus is useful kind regards Chris leading builders

Reconfiguring an extension

Follow Us

Cookies

Manage Cookies

Essential cookies

Analytics & Tracking

Advertising