MG Professional - house refurbishment company

House Extensions in London – What Do They cost?

House extensions cost London

of a project always depends on its type and scale. For house extensions in London the cost is based on its dimensions, generally the larger your extension, the less it will cost per square meter due to economies of scale. Painting is a relatively quick and simple low-cost home improvement. A new coat of paint can transform any property however, before applying paint we need to make sure that the surfaces are smooth and even. This means any holes, dents, bumps or scratches need to be covered with plaster before applying a new coat of paint.

TYPICAL SINGLE STOREY EXTENSION

Cost breakdown and specification of a single storey house extension:
- 1 x Steel box frame to support rear wall (if rear wall to be fully opened up)
- 1m deep and 0.6m wide trench foundations
- Standard ground bearing concrete slab floor construction
- Standard brick and block cavity wall construction 300mm thick
- Standard mono-pitched roof with concrete tiles, all necessary lead flashings and vent tiles included.
- 2 x pendant lights
- 1 x radiator connected to the existing system
- 4 x double sockets
- All walls and ceiling plastered and skimmed ready for decoration
- Potential windows or patio doors are excluded from the price depending on client's choice of doors and windows as well as the extension design.
Construction Cost: approx. £1500 / m2 + VAT

Professional and statutory fees:
- Planning Application statutory fee: £172 (if planning permission is required)
- Certificate of Lawful Development: £86 (if planning permission is not required)
- Architect "Planning Package" starts from £950 + VAT
- Architect "Building Regulations Package" starts from £800 + VAT
- Architect "Schedule of Works and Specifications" starts from £600 + VAT
- Structural Engineer fees will depend on the design and ground conditions but we always advise to budget in the region of £1200 + VAT
- Party Wall Surveyor if required we advise to budget £900 + VAT per Party Wall Award.
- Building Control we advise to budget £1200 + VAT (we tend to use private and Independent Building Control Inspectors, who tend to be a bit more expensive than local authorities building control but are more cooperative and provide better quality service). All the fees mentioned above are for your guidance only. Once the project brief is defined we can confirm the costs for the design and construction of the project.

TWO STOREY SIDE EXT.

- 1 x Steel box frame to support rear wall (if side wall to be fully opened up at ground level)
- 1m deep and 0.6m wide trench foundations
- Standard ground bearing concrete slab floor construction
- Standard brick and block cavity wall construction 300mm thick
- Standard mono-pitched roof with concrete tiles, all necessary lead flashings and vent tiles included.
- 2 x pendant lights
- 1 x radiator connected to the existing system
- 4 x double sockets
- All walls and ceiling plastered and skimmed ready for decoration
- Potential windows or patio doors are excluded from the price depending on client's choice of doors and windows as well as the extension design.
Construction Cost: approx. £1400 / m2 + VAT

Professional and statutory fees:
- Planning Application statutory fee: £172 (if planning permission is required)
- Architect "Planning Package" starts from £1250 + VAT
- Architect "Building Regulations Package" starts from £1050 + VAT
- Architect "Schedule of Works and Specifications" starts from £950 + VAT
- Structural Engineer fees will depend on the design and ground conditions but we always advise to budget in the region of £1400 + VAT
- Party Wall Surveyor if required we advise to budget £900 + VAT per Party Wall Award.
- Building Control we advise to budget £1300 + VAT (we tend to use private and Independent Building Control Inspectors, who tend to be a bit more expensive than local authorities building control but are more cooperative and provide better quality service). All the fees mentioned above are for your guidance only. Once the project brief is defined we can confirm the costs for the design and construction of the project.

TYPICAL GARAGE CONV.

- All walls, ceiling and floors fully insulated to pass build regulations
- Garage opening blocked up with brick and block work
- 1 Concrete lintel installed and door installed allowing access from existing house
- 1 x Upvc window installed
- 2 x pendant lights
- 2 x radiator connected to the existing system
- 4 x double sockets
- All walls and ceiling plastered and skimmed ready for decoration
Construction Cost: approx. £1000 / m2 + VAT

Professional and statutory fees:
- Planning Application statutory fee: £172 (if planning permission is required)
- Certificate of Lawful Development: £86 (if planning permission is not required)
- Architect "Planning Package" starts from £950 + VAT
- Architect "Building Regulations Package" starts from £700 + VAT
- Architect "Schedule of Works and Specifications" starts from £600 + VAT
- Building Control we advise to budget £1100 + VAT (we tend to use private and Independent Building Control Inspectors, who tend to be a bit more expensive than local authorities building control but are more cooperative and provide better quality service). All the fees mentioned above are for your guidance only. Once the project brief is defined we can confirm the costs for the design and construction of the project.

House extensions London Price

It is exceptionally challenging to unequivocally state how much a house extension would cost. The said state of affairs is predominantly caused by the fact that the price must be treated as a variable. It may – and in many cases actually is – affected by a myriad of factors. Some of them are outside client’s control, but some other may be easily calculated. Even while trying to figure out the estimate price of a house modification, we can at least get the gist of how much we will be asked to pay after all of the finishing works have been performed successfully.

One of the variables that may be easily checked is the price of materials and equipment to be utilized while performing a house redecoration. House extensions London cost will surely be affected by our choice of items of furniture, tiles, and especially – building materials. The latter are of exceptional importance and must be taken into consideration as soon as possible.

An extension can be furnished or refurbished at any time, but at first, it must be properly built and finished. There is no point in purchasing superb quality curtains for an additional room that will have no windows. Such an example may be considered by some to be a huge exaggeration, but it illustrates the necessity to make prior agreement with the construction company, especially with regard to functional features of the extension to be erected. Only then can we think about carpets, curtains, chandeliers, and beautiful decorations alike.

The aforementioned construction company-related factor, especially the price of the services provided, is yet another variable that has to be analyzed, calculated, and added to the estimates before making a decision about building a house extension. The reasoning here is simple – while hiring highly professional yet expensive company, we may not have enough funds to properly furnish the place that has been erected and became a part of our property.
Do not hesitate to contact a construction company of your choice before placing a building order. Provide the representatives of the firm with all the most important pieces of information concerning the extension material, size, complexity, and installations to be applied. Such a set of valuable indications will make it remarkably easier for the employees to prepare an offer for you and then – you will be able to tell whether the particular company meets all your needs or there is the necessity to look for another one. As the old saying goes:
“There are plenty of other fish in the sea”. The fact that a given enterprise has not managed to meet all your expectations does not mean that every firm operating in the construction- oriented branch of industry is the same. All you need to do is to double-check all the available pieces of information relating to a company and validate them by talking to the representative afterwards.

If you want to know more about other facts to be taken note of while creating a house extension price estimation, do not hesitate to contact us!