House Extension Builders
In need of more space? A house extension could be your ideal solution. This flexible service offers the opportunity to expand your home to suit your precise needs, providing a stress-free alternative to finding a larger property.
We have a wealth of experience in completing home extensions to exceptional standards on all scales and in all styles, from traditional brickwork to timber-clad. Whether you’re seeking a seamless addition to your character property or a standout feature piece, the M Jarrald team are able to deliver outstanding results, every time.
End to End Support: Our Promise
M Jarrald Construction is more than just house extension builders. Our skilled team of house extension specialists combine technical expertise and a client-first approach to deliver excellence at every touchpoint. From our initial consultation to post-completion, we promise to communicate with complete honesty, finish your project to the highest possible standard, and provide results to your satisfaction.
Martin and Ben were exactly what you dream of from a builder. They arrived when they said they would and finished when they said they would. The standard of their work and their employees was exemplary. Their quote was very accurate and any adjustments were completely fair and of no surprise.
I would recommend them wholeheartedly, and I look forward to their work on another project next Spring.
Martin and his amazing team have spent the last few months refurbishing my house. They installed a new kitchen, replastered most of the walls, and converted a large bathroom into a bedroom and bathroom. Every single tradesperson sent to the house has been professional, courteous, and always left the house in a clean, tidy state. Nothing was too much trouble and I cannot recommend these guys enough.
We highly recommend Ben and his team for the quality of their work, their professionalism, and their attention to our requirements. They completed a single story extension at our house in Colchester as per the schedule and to cost quoted. The finish is great and everyone who has seen our extension now wants one! Thanks to all of you for a wonderful job!
Wouldn’t hesitate to recommend M Jarrald Construction. They have recently completed an open plan extension for us and everyone just says ‘wow’! We are very pleased with all aspects of the build from start to finish, all tradesmen involved with our project have been fabulous and extremely trustworthy. Thank you to Martin and all the guys.
Martin and Ben are great to work with. They have given us a fabulous new space in our house which makes a difference to our lives every day. They have been reliable throughout the build and have responded swiftly to any problems.
We have been very impressed with M Jarrald. They recently finished fitting our single-storey kitchen/diner extension and we are so pleased with it. Every team they sent was very polite, knowledgeable and so happy to help. The site was kept tidy, deadlines were pretty much kept to, as well as the budget! The place feels quite deserted without someone on site now it is finished. We would hesitate to recommend M Jarrald and will definitely use them again when the need arises!
We’ve had extensive works carried out by M Jarrald Construction. Ben G has been brilliant to work with throughout the project. His team on site have been amazing. They’ve all been great fun to have around. They’ve all been polite, friendly, professional, and worked incredibly hard. Ben and Kyle did an amazing job on our new driveway and patio renovation. Tony did an absolutely incredible job with all the carpentry. The 3 of them, as well as the electricians, plasterers and plumbers, went above and beyond and worked incredibly hard. Any issues have been resolved quickly by Ben or the guys on site.
Martin and his team are absolutely fantastic! We just had our house refurbished, a large extension added on the back, bathroom remodelled and a new kitchen installed. They have been amazing from the beginning to the end! The site was always extremely tidy and the tradesmen were very professional and helpful. The final result is stunning and the quality of work is excellent! We will definitely be using them in the future! Thank you so much for all your hard work!
House Extension Builders FAQs
How much is a house extension?
The precise cost of a home extension can vary significantly in accordance with a number of factors - particularly, design, and the need for additional services such as electrical and plumbing. In addition, the cost quoted for your extension may be influenced by your location, and the contractor you select. Whilst a small, one-storey extension’s price can start at approximately £15,000, larger projects including two-storey and bespoke extensions can cost upwards of £100,000. Due to this variation cost, it’s near impossible to get an exact price for your extension project without consulting a contractor - in fact, it’s advisable to reach out to multiple in order to get a good idea of costing and value.
How big an extension can I get without planning permission?
Although a number of extension types will ultimately require planning permission, in some circumstances, a single-storey extension may be considered a permitted development. Although permitted developments do not require planning permission, they are still subject to regulation, which must be adhered to during both the design and construction phases. I order to avoid planning breaches, it’s essential to conduct research or consult an expert during the planning phase of your project in order to determine whether or not planning permission is applicable.
If you’re looking to add an extension to your home, reach out to our team of construction advisors for a free, no-obligation consultation, during which we’ll discuss your ideas, requirements, and concerns.
How do you plan a house extension?
Completing a house extension can be a complex process from initial design through to your contractor’s first day on-site, meaning that effective planning is essential n order to ensure the best possible results. When putting together your preliminary plan, you should generally consider the following:
- Have all relevant initial site surveys been completed?
- Will your intended design require planning permissions or permits? If so, when, how, and by whom will applications be submitted?
- What safety regulations must your project adhere to? How will these be implemented?
- Have you selected an architect and project manager or construction contractor who can deliver on the above requirements and your vision?
- Do the completed design, and planned footprint suit the requirements of yourself and your existing property?
- How long will your project take to complete?
- How much will your project cost in total? Have you left leeway in your budget for unexpected costs?
How long does a house extension take?
The timeline and expected completion date of your project can be influenced by a number of factors - primarily the size and complexity of your design, the contractor chosen, whether or not you intend to live in your home during the construction process, and external influences such as supply shortages.
On average, a standard single-storey extension will be completed within approximately three months, whilst a two-storey extension may require an additional few weeks in accordance with the factors listed above. During this time, the site and foundations will be prepared before external walls are constructed and integrated into existing walls. Towards the latter half of the process, the roof and internal walls will be constructed, before the structure is weather-proofed, and windows and doors are fitted.
In the finishing stages, power is added to the extension, the space will be plastered, and finally, decoration will be completed.
Do I need an architect to design my extension?
In cases wherein an extension will require full planning permission, drawings completed by a professional architect are essential and must be submitted in order to gain approval.
In contrast, permitted development sites require only the submission of a ‘sketch’ and ‘letter of intent’, primarily to inform the planning department of your project’s intended aesthetics. This may be completed by an individual other than an architect, but poses the risk of breaches and planning enforcement in the case of common issues such as scale inconsistencies present once construction is complete. Your permitted development project plans are more likely to receive approval quickly and avoid future planning issues if a professional architect is consulted.
How much is a single storey extension?
Outside of London, the average cost of a single-storey extension is between £1,200 - £1,500 per square metre.
It's important to consider at the outset what you are going to want out of your space. If it is an extension to your dining room or living space, for example, your costs are likely to be lower. If the project includes a kitchen, however, then the price will be higher and this should be accounted for. Other additional features such as underfloor heating or bi-fold doors rather than french doors can also see your budget heading up. You should weigh up the pros and cons of each feature you are looking to include. Will it fundamentally change the way you live, or is it a nice to have addition?
How much is a double storey extension?
Adding an additional storey onto your extension can add up to 50% to the expense. So you can expect to pay £1,600 - £2,150 per square metre (of the overall footprint of the extension). Once again consider any additional features that you might want For example, a bedroom with an en-suite bathroom is going to be a higher spend than a back bedroom/study.
Do I need plans to build an extension?
With extension planning permission regulation having become laxer in recent years, and the amount of paperwork required to get building seemingly shrinking, many home improvement enthusiasts are now questioning whether or not plans are required at all in this context. The answer to this question can vary:
If your extension project requires planning permission, you must submit all required drawings and plans, meaning that, for larger or more complex builds, they’re an unarguable necessity. Those with more simple ideas may be tempted to skip the planning phase altogether, hire a builder, and get going - however, our experts highly recommend investing at least a little in putting your vision on paper, whether through the in-house services of a builder, or external architect.
In short, planning can assist greatly in budgeting, whilst covering building regulation guidelines, freeholder consent rules, party wall issues, and, of course, the visualisation of the end result before ground is broken.
Is getting a house extension worth it?
Ultimately, this is a question only you can answer, and you may have to take several factors into consideration before deciding for yourself. You may have plans to renovate your entire property and adding a home extension may naturally fall into your scope of ambition. Home extensions can be pricey, so you will first have to formulate an appropriate budget and manage your resources accordingly. Occasionally, it may prove cost effective to move out rather than invest in an extension. It all depends.
A major reason why you may want a house extension is simply to provide more living space for your family. This can be a cheaper, less stressful option than outright moving to a new house (though, as said, it can depend on the homeowner’s exact situation). You may also be interested in increasing the value of your home. A well-executed house extension plan can make your property worth investing in if you ever decide to sell in the future.
Not Just House Extension Builders!
Searching for another construction service? Discover our carefully crafted range of bespoke construction offerings below. Whether you’re seeking a house extension, a renovation, or even something a little different, our team of accredited experts are able to deliver above and beyond.
Transform your property’s unused attic into stunningly functional living space, constructed and installed in line with your precise requirements.
Expand and enhance your home with a beautifully constructed bespoke extension of any scale or style – from traditional brickwork to sleek timber.
Breathe new life into your space with our renovation services, delivered by construction experts with an eye for both beauty and functionality.
Make your dream home a reality. Our bespoke, client-led new build service is designed to help bring even the most complex visions from paper to site.
Enjoy an ingeniously functional, visually stunning kitchen, installed by our experts in partnership with our close, high-quality suppliers.
Our Construction Blog
Read below to discover posts discussing everything from planning and design to building and budgeting.
Which fitter should you choose? Our experts take a deep dive into the factors you should consider before choosing a kitchen fitting company.
Are you planning a loft conversion? In this blog post, M Jarrald’s loft conversion specialists discuss everything affecting how long it takes to convert a loft to living space.
Are you wondering how to increase your house value? Read our experts’ insights on this year’s top 5 worthwhile home improvement projects.