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Our London house extensions team is dedicated to ensure you get the best and proper attention you deserve. house extension builders in North London, East, West and South London.

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The biggest advantage of our kitchen extensions company is the experience we have on board and our home extension team in London offer all our customers a guarantee.

Flexible Appointments

You can pick your best time : We offer flexible and convenient appointment with our house extension expert teams and times that can be worked around your schedule before you meet the London builders.

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House extension builders London

All property extension builders

Welcome to The building Constructor Home Extension department. We accommodate all residential and commercial homes that require an extension project to be undertaken, whether its a Kitchen extension or side return extension. We cover a large part of Greater London and surrounding areas in and around the M25 motorway. We have extension builders in North London, a great extension build team in South London, another based expansion home team in East London & West London home extension builders. In and around greater London are were our teams are active 7 days a week. We like to see ourselves as the best property extension builders of the future and do every project to highest of standards. Building an extension is very far from easy and requires skill and planning, so call our experts for a free no obligation chat now.



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Outstanding Builders Building extensions in London

We can arrange for your closest home extension expert to contact you from North London area. We have team members situated in Hammersmith and Fulham, Kensington and Chelsea, Barnet, Harrow & Cambden and Enfield. Home extension builders in North London are also available for Edgware and has a big dedicated team to help assist in residential and commercial projects.

Side return extensions & Kitchen extensions

We cater to provide bespoke and architectural level house extensions for all purposes and the most popular on today's market will have to be the Kitchen extensions or Side Return Extensions. What ever you choose to construct, The building Constructor can send the best staff to help you decide and assist in giving you there 20 year knowledge of the construction business. Our teams are professionals at what they do and deal with building works all day long, new home builders, loft conversions, outhouses and general Refurbishment contracts are just to name afew services that our staff are trained and experienced at.



So why not give us a call and get a fast sufficient quote email us at [email protected] or Call us on  +442033898065 


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Modern Sunroom or Conservatory Extending into the Living Room with a Featured Brick Wall

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Considerations You Should Make Before doing London House Extensions

At one point or another, you may question whether you want to stay in your home or will buy a new one. For some people, buying a new home is not going to be in the cards, and if that’s not something that you can pursue, don’t panic. You can always look into making house extensions. That’s right, you can extend your house and do a full change, or you could extend a kitchen, bathroom, or any number of options. Either way, you’re going to find that there’s a lot of opportunities to explore in terms of making a house more compelling overall. The most compelling of changes could be waiting if you just look into house extension builders today.

Before you get too far with this solution, take several considerations with you. In fact, the following are just a handful of things that you should take into consideration before you hire anyone to build your extension, or even decide on a full house extension at all. It’s easy to get caught up in this arena, and then get stuck with an expensive alteration to your home, so before going too far, take a few notes regarding this option overall.

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House Under construction for Extension in Southwark, South London
You May Not Live At Your Home while building extensions London

The first thing that you should be fully aware of is that you will not be able to live in your home during certain extension projects. There are some options that will force you to leave your home while changes are being done. This is not always the case, but it is something that you should be fully aware about. Some people don’t realize that this is a true element, but it’s something that could cause stress and chaos for some individuals. You see, this all depends on how bit of a house extension you want. There are different types of extensions, mind you, as there’s not just “one” element that you can move forward with. It’s imperative to realize that.

Take Your Time Choosing An Extension Builder

Do not use haste in choosing a builder. This is a bad idea. There are many people that think that this is something that doesn’t need a great deal of exploration. Some people just hire any old company to work with. But that’s not wise. Instead, take your time choosing House extension builders , and make certain that you are looking for something that is going to help you garner a good solution for your money. Think about what you want out of an extension, and what kind of budget you’re working with, because this is going to help you garner the upper hand in how you change your home’s look and feel, etc.

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Preplan Everything, even the cost

The next thing that you should take into note is that of planning. You should preplan everything completely, including any kitchen extension that you may have in mind. If you don’t preplan, you’re going to end up dealing with a lot of issues. You need to take into consideration the placement of your appliances, where the plumbing will be, and other elements. You need to ensure that you know where everything is going to be in place. Consider this as a major element to ensure that your extension gets forward progress with relative ease.

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Look Into Regulations and Rules

Every city has a set of rules regarding construction. When you hire a company, ask about the regulations and extensions in your area. You need to know what repair work will be allowed with and without permits. This is important to understand because it will help you understand time frames, and what obstacles you may have to overcome to get your project off the ground. Even though you may own a house, you will find that you still need to work within the permissions of your city, and could end up having to limit the construction of your extension. Just because you can dream up a new way to work with your home’s extension, doesn’t mean that they are going to allow it, so you have to take that into consideration before you finalize anything. The company you work with should be well aware of this, and if they don’t, then inquire with them about it.

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Get Multiple House extensions costs or Get Lost

You may not think about it at first, but it’s important to get multiple bids. Make certain that you take time to certainly take time to get bids for the project that you have. This is going to help you take into consideration whether or not you can get the extension done with the budget that you have. Remember, if you don’t have the budget, you may get stuck mid-way through the project. Get multiple bids, and make sure that you take your time selecting whom you want to work with, based on the budget that you are thinking of spending on the extension. There’s a wide variety of price points that can come within this arena.

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Things Take Time, and so do extensions

If you’re in a rush, and you’re investigating building an extension to your home, understand that things are going to take time. These things are going to take a lot longer than you may expect at first hand. There’s so much to a full house extension, or just about any type that you may have. Things take time, and could take upwards of weeks or months to complete, depending on how elaborate your project will be and the builders that you hire. Conversions, extensions, and all sorts of remodeling ideas are going to take longer than you may imagine, and as you get bids, make sure you take note regarding that. It’ll change how you see the future of your project, and the price point that you are going to pay overall.
At the end of the day, you’re going to find that there’s a lot to explore regarding the options that come with home extensions. Whether you want an extra room, a kitchen change, or just about anything, you’ll find that the above considerations shouldn’t be taken without merit.


  • Single-storey Extensions - made on usually a double-story house but the high of only the ground level ceiling
  • Double Story Extensions - Normally the hight of both ground level and 1st floor ceiling keeping the Loft available in view, these would normally be good for a rear kitchen extension with a bedroom above it
  • Rear house extension - extended the rear side of the house that usually stands to ground level ceiling height
  • Side Extension - which can be single story or double story in height and provides extra room or space to an already standing bedroom, bathroom, toilet or kitchen
  • Wrap Around extension - this type of extension can also be both, single and double storey hieght and runs around the whole house which looks real nice and makes tons of space

Permitted development and planning permission, building regulations, your neighbors and home insurance are just a few things to take in to consideration.  Lease hold or mortgage? Check your lease provider will permit and always check with the mortgage company. After these general steps its time to find an architect and finish off with a budget in mind and a good contractor.

A basic extension would typically cost around £1,000 per square metre meaning a 3 x 5 metre single storey extension, for example, would set you back £15,000. This will include all works apart from electrician and plumbing, windows and doors are within this price. Again, the are your home is in makes a difference too.

It’s not essential if, any part of the extension is not higher than the highest part of the roof of the existing house. no more than 3 metres in height if any part of the extension is within 2 metres of the property boundary and the extension does not extend beyond the rear wall of the original house by more than 3 metres (so were the original house is built you can go an extra 3 metres back in to your garden without planning permissions).

Not only does it add price value but mainly ‘’living’’ value to your property and any extra living space can always fetch a much higher price when sold or valued with extra living area added. You are bound to easily double your investment, so let’s say you spend £25000 on the whole extension, you would have easily put at least a 50-70k value to your home.

The actual extension itself will only take 8 weeks maximum but the initial procedure of breaking through the rear or side wall will take a further 4-6 weeks due to plumbing, drainage, electricals, heating and ventilation requests for the new extended feature. Total of 10 – 16 weeks maximum and the contractors should be out. Also depends on the size of the team, we normally use extra man power to help finish projects faster.

No is the straight answer as this is known as permitted building or construction. I would however pass it via the home insurance and lease or mortgage provider first. Porch is a minor extension not major.