House Remodel - Budget Guidance Needed!
Posted 06 December 2014 - 02:57 PM
- looking to add two double storey extensions to both sides of the house (kitchen,dining room,utility room,drawing room, garage, bedroom & ensuite, master bedroom &ensuite)
- Approx added sq footage is 1,600
- Both sides will have pitched roof
- the existing house will have a new staircase, repositioned downstairs bathroom and added ensuite upstairs. Other than this it will be gutted and redecorated
I appreciate that's a limited amount of info to provide specific costs but any rough estimates would be very helpful. I believe we can get that all done for £400,000 to a half decent standard (including preliminaries etc) but I'm being told otherwise.
Thanks in advance for any helpful replies!!
Ps we are waiting on the estimated costs from a building firm but they may not be with us by Xmas
Posted 06 December 2014 - 03:19 PM
Your best bet is to get several quotes, for the same spec, from several different firms. You'll find you get a pretty wide variation in price, I expect, so will then need to look closely to see that the quotes are all on a like-for-like basis.
Generally the extension should cost somewhere around £1200 to £1600/m², if there's nothing untoward with the ground works or tying in to the existing structure, so your ~149m² should, on the face of it, cost between £179k and £238K. However, there could be additional high costs associated with anything awkward, like custom steel work and structural engineers fees, difficult access, tricky ground conditions etc. An upper limit I'd have thought should be around £300k, even allowing for some challenges.
For comparison, a brand new house to a pretty high build standard, of around 150m² should cost no more than around £300k, unless it has some really significant ground problems or is to a high internal spec. Our new build passive house has cost a bit under £1400/m², and that's 130m². That price includes solid oak joinery, passive house insulation and airtightness, triple glazed windows and doors, under floor heating and a mid-range kitchen spec.
You may want to get a QS to look at pricing if you have a detailed enough spec and set of plans. That would give you a pretty good idea as to whether the quotes you are getting are reasonable. You can check pricing against the Quantity Surveyors "Bible", Spons, here: http://www.ebuild.co...&attach_id=2363
Edited by jsharris, 06 December 2014 - 03:21 PM.
Posted 06 December 2014 - 03:38 PM
Posted 06 December 2014 - 04:19 PM
and our entire ground works cost, including removing 900 tonnes of soil and waste, building a 40m long retaining wall, putting in services trenches, digging up the road in two places, fitting a drainage system etc and levelling the house base for the foundation system and laying the concrete base for the garage came to under £60k, to get to this:
I would want to see a complete breakdown of costs from whoever is quoting prices like this to see how they've arrived at the figure, as it sounds extremely high for a job of this size.
Posted 07 December 2014 - 06:55 AM