How much did you spend on your extension?

[tiredlegs]

Just being nosey really. We are in London and can possibly extend up into roof or to the side or as a garden studio. We'd like to get some extra reception/bedroom space for guests and a utility area.

Southeast and extended our terrace kitchen by not loads, refurbed the bathroom and installed a new cloakroom. No new bedrooms though we had previously converted the loft to create a new bedroom.

£160k

We did it with quite high end finishes but it’s basically expensive.

We had a single storey rear and side return extension (added about 35 sq metres) plus nearing the end of a loft conversion too which has added two bedrooms and a bathroom. I would say in total (including a new megaflow boiler and a new kitchen plus two new bathrooms and utility) it will have cost us about £150k. Maybe a bit less. We are in the SE but within the M25.

Ours is 70sq metres double storey side extension with new kitchen, ensuite, master bedroom, utility room, downstairs toilet and a snug.
We’re south east and it’s coming in at 100k

Where are you Bax?!

We’re in Kent. Ours is a fairly simple build and we have a howdens kitchen

NW (Cheshire) double storey rear extension. Added approx 40 sq m. Open plan kitchen diner, extra bedroom and ensuite. About £105k to date (just garden to go).

We looked into adding about 24sq m in outer London. Detached house so easy access, no party walls etc. The quotes came at about 40-50k for a room (a normal room with a radiator and lights but nothing else fancy in there).

30sq m kitchen diner , old kitchen made into bedroom ,redecorated all downstairs and solid oak flooring throughout ground floor and complete overhaul of garden all beautifully done ...within M25 £100k total finish

£70k Bax! Bargain

For a single storey extension (18 square meters) which includes a new kitchen and big sliding doors, it’s going to be about £100k ish. That includes a new small porch, a wood stove and landscaping for the garden. Take those out takes it down to about £80k. That’s including the cost of the kitchen, flooring, lighting and appliances plus utility room.

These prices are unbelievable!! I’m in the South East (within the m25), converted our garage into a room, added a utility and downstairs cloakroom, extended kitchen to the rear, and everything all in, including the £12.5k foundations, was £70k. We’re putting a new bedroom on with ensuite after Xmas for £25k.

Ours included about 40sq m of anticipation floor, bi-fold doors, a new range master and an American fridge freezer. As well as new carpets etc, new internal doors throughout and all decoration and tiling.

Or amtico floor, ffs.

West London completed a 25sq m single storey gable end a year ago. £43k for the shell and 25sq m patio. Then another £16k to fit kitchen, bathroom, new boiler and flooring.

Ours is £100k believe although our official quote is 85k then we need to buy kitchen, bathrooms and flooring. It might go slightly over 100k but out builders have only just started their company. They are really enjoying our job so we are being treated very well!
We will still need to do our garden and drive after but that can wait!

Wow Bax, Lurking those are good prices! Did any of you go through an architect to find builders/ how did you find them - we will get an architect and will probably need pp - hoping to add about 50sqm

Thinking of doing the same. Lots of helpful info here 🙂

@Baxdream ah ok that sounds about right then. Ours was £60k ish plus vat for all the building. Stove and garden is another £12k. Then kitchen, floor etc etc

@tiredlegs we found builders via local recommendation andmaking a note of all the builders signs every time I went for a run

We were recommended ours by a friend

Small extension, new kitchen, Utility room, shower room, full house rewire and new boiler £86K. Just outside the m25 got workmen through recommendations.

We're currently having a two storey front extension built which will enlarge the current hallway, provide a small study downstairs and a small double bedroom up stairs plus a (very) small en-suite linked to the existing front master bedroom.

We're near Portsmouth and it's costing 32K, excluding the windows and any bathroom fittings.

Our official quote -£73k was for extension (30sqm)and converting kitchen into bedroom, but that price included 2.4m bifolds ,windows,3 lge velux,underfloor heating,boiler, decor,and electric fix ...the rest came from new kitchen, flooring, garden,gas fire,decor,change of electric meter to outside, downstairs loo overhaul,....
none of all the extras were planned but decided as we went along ....soon adds up

We used an architect but DH didn't want to use their builders as we did the kitchen and lounge extension first and had a shell built to save money (the architects builders wouldn't quote for a shell). We just called numbers in local magazines and stuff and found a lovely guy who did the groundworks and bricklaying then we did the rest. By the time we got to the 2nd phase (which was the loft conversion and part refurb of the front half of the house) we had a lot more money so happy to pay for the full lot to be done. We actually found our builder on checkatrade. Both times though we got three quotes but based our choice on how they came across more than the price. The loft builder has been brilliant. Couldn't ask for more tbh.

Can I ask if it’s essential to use an architect to go through the extension process? We are considering a two storey extension knocking down the garage at the side of our house and rebuild it longer so we can knock through our dining and top landing window. We want to look into price but if we have to pay an architect first to find we can’t afford it it kind of undermines the point.

It depends what you want and how creative you are. Do you know what you want? Are there any issues which need some specialist input? We didn't use an architect. I knew exactly what I wanted (fairly standard 2 storey extension on a 30s semi) and actually drew up the plans myself. Got builder on board who got technical drawings drawn up after structural engineering input.