Tag: double-storey


Extensions: Things You Should Keep In Mind

Are you thinking about creating an extension on your home? this is one of the best ways to create extra space or additional rooms in your home. Here is some information on extensions you should think about.

Rear Extensions  

A rear extension extends from the rear of your house into the garden space. It’s a great option for someone that’s wanting to extend their kitchen or have an open floor plan. 

Side Return  

A side return extension is an extension that is built at the side of your home. This extension can make your home look larger. 

Wrap around extensions  

A wrap around extension is a rear and side return extension combined together making a large space. If you cannot decide between one or the other, why not have both! 


A double-storey extension gives you additional living space and an extra bedroom upstairs. The advantage to this is that you get double the space but it doesn’t double the cost. Normally a double-storey only cots around 50-60% more than a single-storey. 

Things You Should Think About Before Starting Any Extension  

Will adding an extension to your home increase the value? 

Constructing this project will add value to your home, it has been known to raise the value by 5-15%. How expensive the build is depending on the value. How much the value will be depends on:  

  • The quality of the work 
  • What additional rooms you’ve created 
  • Is it modern?  

Have you got enough budget? 

Having a realistic budget is very important. Without a budget there’s no project. While many know about the material and labourer fees people often don’t know or forget about these hidden fees such as: 

  • Legal fees  
  • Stamp duty and land tax 
  • Measured surveys 
  • Architecture fees 
  • Structural engineer fees 
  • Planning application fees 
  • Building regulation fees 
  • Warranty  
  • Services  
  • Waste removal 
  • External works 

There will most likely be more fees that will come along with it, so make sure your prepared. 

Do you have permitted development rights? 

Permitted development allows you to extend your home without planning permission. There is a number of guidelines your project will need to follow and not every home will come under those guidelines, meaning they will need a full planning application. Here are some of the projects you can build under permitted development if your home qualifies: 

  • Rear extension  
  • Side return  
  • Two-storey
  • Garage conversion 
  • Loft conversion  
  • Annexe 
  • New additional storey  

You still need to be aware that if you decide to do a complex project it could become a chance that you may need a full planning application. It depends on the work you decide to do. 

Image: https://craymanor.co.uk/house-extensions/larger-home-extensions-now-permitted/

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Extensions, House Extension

The basic information to know about Double-storey extensions

A double-storey extension may seem like a much larger project to do in comparison to a single storey. They’re often a more budget-efficient way to add extra space to your home and is a lot cheaper than moving house.  

Will you need planning permission for a double-storey extension?  

It is possible that you can build a double-storey extension under permitted development, but it is very likely that you will need planning permission. The basic rules that planning permission will be required are if the extension:  

  • Extends towards the road 
  • Increases the overall height of the building 
  • Covers more than half the area of land surrounding your home 
  • Is taller than 4m  
  • Extends more than 6m from the rear of an attached house 
  • Extends more than 8m from the rear of a detached house 
  • Is more than half the width of your house 
  • Uses different materials to those of the original house 
  • Includes a balcony or raised veranda 

Designing the double-storey extension –  

You should consider how to blend the extension with your existing home to make sure that it doesn’t look out of place. You can do this by matching the floors and walls between the new and existing space. Another way is to use the same decorations such as colour schemes, furniture and mouldings.  

You may also need to reconfigure the layout of the upstairs to make the new access to the rooms feel natural.  

Adding in windows and doors that capture the most sunlight and the best views are a major point to think about when it comes to designing an extension. Bi-fold doors are a very popular option because it’s a great way to bring the outside in. They also make the space feel bigger and they allow for a lot of sunlight to enter the property.  

How much does a double-storey extension cost?  

The average price of a double-storey extension can cost around £60,000 however, this depends on the size of the space, your location, and how you plan on using the space. 

A big factor in the cost of your extension will be the finish you are aiming to achieve. Here are a few types of finish and what they consist of depending on the size:  

  • Basic – The bare essentials. £40,000 – £90,000 
  • Average – A mix of basic and bespoke items. £47,000 – £95,000 
  • Deluxe – All fixtures and fittings are top quality. £55,000 –  £100,000 

Duration of the project –  

The time scales of your project can never be precise due to delays that can happen. But roughly this is how long you should expect your extension to take:  

  • Small extension – 8 – 10 weeks  
  • Medium extension – 10 – 12 weeks  
  • Large extension – 12 – 14 weeks  

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