How much will my extension cost

Projects can be designed and built to meet a specific financial budget. For instance, a domestic project from experience would cost in the region of £1,200 – £1,500 per m2. This reflects recent price increases over the last few years. If you’re developing an extension within London and some parts of the South East, these figures can increase to £1,500 – 2,000 per m2.

Other Costs to Consider

In addition to this, you will need to include approximately 10-15% for professional fees (architect, planning application, building regulations, structural engineer).
And let’s not forget to include 20% VAT that will need to be included on top of your total fees.

What About a double storey extension?

The general rule of thumb you can add 50% extra to the build cost of a single storey extension.
For instance
£30,000 for a single storey extension
Add 50% of the single storey fee for a double storey extension = £15,000
Double storey extension = £45,000

What About my Kitchen and Bathroom?

The above costs generally will not allow for your kitchen and bathroom costs or flooring and floor and walls finishes.
We would normally advise allowing between £3000 – £5,000 for a bathroom and £10,000 for a kitchen (again, completely depends on your specification, but this should get you a lower-midrange kitchen with appliances)

Looking for a FREE consultation? We offer 30 minutes at no cost to you. 

Looking For Help With Your Extension Project?

So, if you have an extension project in mind get in touch today to book your FREE consultation on 0121 387 5900 or 0247 662 9192

Why Use LiteBox Architecture?

We are an experienced Chartered CIAT Architectural Practice that has carried out many kitchen extensions in all types of different homes for the last 27 years
We have Professional Indemnity Insurance and Public Liability Insurance (we are fully insured for all our work)
We have a portfolio of previous kitchen extensions
We have good reliable contact for local builders who can carry out your building work
Here at LiteBox we provide a fast friendly service for your kitchen extensions

How much will my extension cost? (c)Litebox Architecture

Updated: 13/10/2022

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