Building prices for extension double storey
These are the prices we have received for the total cost either per metre squared or for the whole job of building a double storey extension onto your property. The total area of the job in square metres is the sum of the area of both the lower and upper floor. Usually it is considered to be the internal floor area rather than the external one. Obviously the price can vary considerably depending on the level of finish varying from a basic build which may just be for a shell to a complete finish including kitchen and bathroom fittings as an example. In general it is found that double storey extensions work out to be cheaper than single storey ones in terms of m2 costs - again depending on the level of finish.
| Detailed Description of Work | Price/Cost | Units | Location | Last Updated |
|---|---|---|---|---|
| Kaz Construction 07817 908 384 did a fantastic job they put a double storey side and a double storey rear on my house about 70 sqm new central heating and full new electrics. Replastered and painted the whole house. a finished product | £145,000 | m2 | Berkshire | 2015-07-02 |
| 5mtr sq double storey extension, single storey utility room, cloakroom and kitchen plus front porche. In all 91sq metre project build. Include all internal modifications, electrics and plumbing. All walls painted to top coat. | £94,000 | house | West midlands | 2015-01-02 |
| 2 ensuites Central Heating upgrade 8 radiators | £75,000 | item/job | Nottingham | 2014-07-10 |
| 2 storey house with kitchen, 7 windows and 2 doors with radiator in all rooms, 2 upstairs room and 1 study area, and one kitchen and sitting room downstairs | £60,000 | item/job | Enfield | 2014-05-20 |
| central heating- boiler 5 rads-new extention -8mts x 3mtrs x 6mtrs new roof floors/ kitchen/ on suit bathroom /bathroom /plastered to a finish / electrics /new patio doors /5 new windows / drains/ | £49 | house | Mersey side | 2013-11-26 |
| Two storey extension, 22m2 per floor Ground floor - lounge two windows north & west elevation, double patio doors to south leading into garden. Fire place on east side of room for wood / duel fuel burner (connecting to existing fire place & chimney from room next door). First Floor - master bedroom with en suite shower, creating corridor from existing building. Relocate existing en suite to master bedroom. Quotes to include first fit and second fit & making good. | £39,000 | m2 | Herefordshire | 2013-06-27 |
| ONE AND A HALF STOREY WITH SLATE PITCHED ROOF ONE RADIATOR EACH FLOOR AND ONE LIGHT EACH FLOOR WITH 4 DOUBLE SOCKETS EACH FLOOR | £30,000 | item/job | SCOTLAND | 2013-06-07 |
| 2 storey extension complete. 50m2. | £148,000 | item/job | Kent | 2013-04-07 |
| Double storey extension kitchen bathroom 2 bedroom an suite all material and labour all done by polish and indian builders Much cheaper than local buildings co | £10,000 | item/job | Earley | 2013-02-01 |
| Complete job side extension double storey plus porch and rear extention 5 x 3m full plaster electrics rads in each off rooms standard basic stuff. Drive way tarmaced at 20m2 07896678449 stephen coe builders | £38,000 | item/job | Leeds | 2012-12-14 |
| New porch plus two storey extension to a semi-detatched ex council house, comprising one lounge/diner, two bedrooms and an en-suite. Two standard doorway size external wall knock-throughs were required. 1.2m foundations. Pitched roof + gable end. External dimensions of extension: 4.5m x 6.8m. External dimensions of porch: 2.4m x 1.5m. Price included demolition of existing single storey extension, five external windows, one standard external door, a large set of patio doors. All electrical, plumbing, carpentry, plastering and tiling work included. Price also includes all planning and building regulation costs, which we sorted out ourselves (approximately £1850). Painting, carpets, furnishings etc. are not included. Our builder saved money by re-using materials where possible. There was also no VAT to pay, because his turnover falls below the VAT threshold (we paid for all materials and other trades directly). | £42,000 | item/job | Portsmouth | 2012-11-07 |
| concrete trench fill foundation 12m3 with a pump and the guys operating the pump poured the concrete and levelled it | £1,452 | house | London lewisham | 2012-09-25 |
| disable room plus washroom down and 16x10 kichen and 2beds and 2 in suite at top | £33,000 | item/job | Oldham | 2012-05-14 |
| 48m2 double storey extension complete | £76,000 | house | Surrey | 2012-04-11 |
| We had a 2 storey extension done and it was approx 60m2 ground floor 45m2 second floor.The job was carried out by DAP Construction ltd for1050 a sq meter.We supplied the kitchen and fittings and they fixed inclusive.They can be found www.checkatrade.com Very reliable completed as per contract no deposit required till work was completed to certain stages. | £111,390 | item/job | Surrey | 2011-10-06 |
| Charles completed an extension for us to provided a two storey extension to the side of our house. All works completed including groundwork, walls and roof, all internal works. We are very happy with the outcome. We have no problem in recommending him for your works. His number is 07814004238 | £44,650 | item/job | Nottingham | 2011-08-15 |
| Including Foundations, Walls, windows, roof, plastering, 26m2 per level | £45,900 | item/job | Cardiff | 2011-03-25 |
| foundations/brick and block,plastered,roof on | £25,000 | item/job | Nottingham | 2010-11-17 |
| 60,000 including VAT to build 33 by 16 feet double story extension. This does not include any bathroom or kitchen fittings. This absolute basic. Expected to add another 35k for ground floor kitchen and upstairs bathroom at least | £60,000 | item/job | Cheshire | 2010-10-27 |
| new room space,a 3x4m single floor extension and a double storey will have 24m2. | £20,000 | item/job | Ipswich | 2010-09-13 |
| Double storey extension, moving front door into extension. new downstairs toilet, upstairs en-suite shower room. New combination boiler, plumbing to join existing pipework. Handmade staircase in extension, upvc windows x6, internal laminate flooring, all electrics including new consumer unit. Pitched roof full tiled. Sewer modifications for new soil pipe. Foundation work standard. total floor area 45m squared, both floors. | £30,000 | item/job | Colchester | 2010-09-10 |
| A full double storey extension, 2 beds and en-suite on the first floor and extended disabled lounge on ground floor with a full disabled wet room. Patio doors to new downstairs lounge with external decking. All electrical, plumbing and bathrooms included. Works carried out by Jackson Construction of Mybuilder.com | £29,000 | item/job | Newcastle upon Tyne | 2010-08-18 |
| garage, two rooms | £15,000 | item/job | Bradford | 2010-08-04 |
| 2 Storey extension. kitchen/diner downstairs and bedroom with en-suite to upper floor. fully fitted by Charles Francis Building Services 01773713344 | £48,650 | item/job | Nottingham | 2010-07-22 |
| 6.6m x 4.1m, downstairs toilet/shower room , small utility, large dinning room, upstairs bedrooms, knock trough upstairs to continue hallway, plaster-boarded, plaster finish, all electrics, plumbing included, wayrock flooring to first floor, pitched roof with gable.no tiling for | £48,000 | item/job | South Wales | 2010-07-13 |
| Side extension, tiled roof, including stairs, windows and internal doors, took 7 months to complete. | £81,000 | item/job | Berkshire | 2010-07-06 |
| Brick with tiled roof, using a good quality builder that keeps within H&S rules and building control guidelines, and is fully insured. Please note that using a small one-man band type of builder may end up costing you more. | £1,150 | m2 | South East England | 2010-06-30 |
| had a 60 sq m extension to the side of my house 6 rsj to take the corner of my house made my kitchen 7m by 5m pitched roof with velux ,one big bedroom on top of garage en-suited , utility area and garage all plumbing and electric work. Builder was brill they completed within the time scale and everything was in house (plumber and electrician)there price was £850 per sq m BHOGAL CONSTRUCTION 07980 904954 | £51,500 | item/job | Birmingham | 2010-06-08 |
| demolish old extension build new two storey extension raising first floor level and raising second floor roof & ceilings to suit existing building floor area 32m2 edit changed to m2 price | £906 | m2 | Skegness | 2010-05-08 |
| two storey bedroom above garage. extend kitchen and dinning room to rear single storey. approximate 3m x 8m | £45,000 | item/job | Manchester | 2010-04-18 |
| We had a 2 storey extension planned and built in Peterborough. Jade Building Services Ltd was the main contractor. The project was very successful and completed on time to our requirements and more importantly to budget. You need to make sure your Builder is accredited either the FMB or Construction line. we went to see Jade Building services other work, spoke with old clients. Do not just look at the bottom line and try to work with a architect, builder team who have worked in the past. I would recommend Jade and you can contact them direct on Free phone 0870 8030525 or 07979 685773 ask for Philip Johnson. Mrs s Bradshaw | £1,450 | m2 | Cambridgeshire | 2010-02-26 |
| double 6m x 5m double glazed 6 radiators 4 rooms | £30,000 | item/job | Northwest | 2010-01-23 |
| basic shell with roof | £15,000 | item/job | Northeast | 2010-01-02 |
| Large double story extension new external walls 100m2 of double skin block work block & beam floor, new roof integrated with old but completely re tiled, new openings from existing house dot & dab plaster boarded then skim coated, stairs modified,3.6m sliding doors installed 6new wooden double glazed windows new boiler and central heating system including underfloor heating in downstairs extension all electrics including for planned kitchen. builders made a really good job | £108,000 | item/job | Essex | 2009-12-07 |
| side extension. no internal walls removed just adding doorways making dining room and third bedroom | £15,000 | item/job | Derbyshire | 2009-11-23 |
| new build with pitched roof. use bedroom en-suit + kitchen / dinner. includes heating system, flooring etc took the company 2-3 weeks bob turner Ltd | £25,000 | item/job | Skegness | 2009-11-18 |
| 32 m2 double storey includes electrical/plumbing work (Edit: changed to m2 cost was £38000) | £1,188 | m2 | Swindon | 2009-10-05 |
| 4m * 5.1m double story extension under a pitched roof to the building regulations. | £12,000 | item/job | London | 2009-09-22 |
| Double storey side extension (8m x 5m) plus loft conversion. 3 bathrooms which 2 of were wet rooms. Full new rewire/central heating system, underfloor heating, new kitchen supplied and fitted, house also rendered to complete finish. | £80,000 | item/job | West Midlands | 2009-08-15 |
| Had a double storey side & rear ext, includes converting garage to room, plus new kitchen to rear of garage, 1 new bedroom above garage plus enlarging box room. Some walls removing to create larger lounge. Block paving front garden and Decking rear. | £50,000 | item/job | Bradford | 2009-05-31 |
| 40m2 double storey gable roof (Edit: price was £53000 changed to per m2) | £1,325 | m2 | Surrey | 2009-05-18 |
| Early 2008 Two storey domestic side /rear extension. Utility/laundry wc at ground floor and family bathroom at first floor. Internal size 2.2x5m with traditional cavity wall and pitched roof over. Including tiling to both rooms ,lighting and bathroom fittings | £25,000 | item/job | Birmingham | 2009-04-28 |
| Kitchen - Ground floor / Bathroom, shower room and bedroom - 1rst floor. Central heating, moving door way, 4 radiators, moving boiler, adding doors, 2 windows and 3 Velux windows. | £46,000 | item/job | Wales | 2009-04-21 |
| 4 radiators 4 rooms bathroom bedroom kitchen lounge | £45,000 | item/job | Birmingham | 2009-04-17 |
| £1000 per m2 seems to be the average in the Midlands | £44,000 | item/job | Midlands | 2009-03-01 |
| 2 storey. brick. tile roof, 3 windows. 1 f/door | £38,000 | item/job | Essex | 2009-02-22 |
| 3 bedroom extension | £100,000 | item/job | Glasgow | 2009-02-21 |
| Side extension. garage, toilet and utility room downstairs, 2 bedrooms upstairs, and en-suite, movement of stairs, and internal walls. rooms plastered, 1 rad in each room, basic sockets and single light. external retaining wall 10m, | £41,000 | item/job | Bradford | 2008-09-19 |
| ground floor 2.650 metres by 8.700 metres goal post shape. 2 room. play room and kitchen knock into existing kitchen to in large. first floor. bedroom. en-suite knock into existing bedroom 4 radiators | £22,000 | item/job | Warwicksrire | 2008-09-09 |
| double storey extension approx 40 square metres. bedroom upstairs with en-suite, and 3 rooms downstairs including wc. | £900 | m2 | Cambridge | 2008-08-21 |
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