Office 4, 24a High Street, Hadleigh, Suffolk, IP7 5AP
Extensions
Building Exceptional Extensions

House Extension Builders

Extension Builders Suffolk
Bring your dreams of an expanded living space to life with a bespoke house extension by M Jarrald Construction.

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.

Why choose an M Jarrald Extension?

No-Obligation Consultation
If you want to build an extension but are unsure of the costs and don't want to take things further without an idea of budgets, M Jarrald Construction can help. We offer a free, no-obligation, survey and appraisal, during which a sensible budget for the scale and finish you require will be established.
Safety First
Safety is at the heart of our work. Each of our extension projects is built to standard and is subject to relevant checks and signoffs throughout the build, alongside a structural engineer's report signed by building control and fire safety, certifying the safety of your property.
Competitive Prices
We understand the importance of budget. Our close, longstanding relationships with leading suppliers mean that we are able to provide the most competitive prices for the highest quality products on the market.
Exceptional Quality
Quality is implemented at every stage of our extension service. Our communication, build quality, and materials, alongside every other aspect of our process, are delivered to the highest possible standards.
Comprehensive Service
Extension projects often require planning permission. If this is the case for your project, and you’ve not yet applied, we can introduce you to one of our local architectural partners, who will guide you through the process for acquisition.
Added Value
When completed to a high standard, an extension can add significant value to your home, with recent surveys reporting an extension including a double bedroom and en-suite increases property value on average by 23%, whilst an additional double bedroom alone can add 12%.
Recent Extension Projects
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Building exceptional extensions
Turner Road
Turner Road

M Jarrald Construction extended, remodelled and refurbished a semi-detached property on Turner Road, Colchester.

Sawyers
Sawyers

A single-storey side and rear extension to this detached home in Elmsett, Suffolk.

Harts Cottage
Harts Cottage

M Jarrald extended and provided extensive refurbishment to this charming, detached home in Kersey, Suffolk.

Maple House
Maple House

A rear extension to and remodel of a detached property in Whatfield, Suffolk.

Squirrells Mill Road
Squirrells Mill Road

M Jarrald Construction extended, remodelled and refurbished the client’s kitchen in Bildeston, Suffolk.

Quality, Craftsmanship, Honesty and Professionalism
30 Years of Experience
Our carefully selected, tight-knit team of construction and carpentry professionals have delivered an unmatched level of service, skill, and craftsmanship to clients for over 30 years.
Fully Qualified & Accredited
Maintaining our team’s knowledge and skill set is essential to ensuring the quality of our work. We are fully accredited and regularly partake in new certifications and courses.
Bespoke Delivery
Each of our projects is undertaken on an entirely individual basis, meaning our range of services can be tailored to the precise requirements of our clients.
Family Owned & Operated
We are a proud family business, owned and operated by leading general carpenter and builder, Martin Jarrald.
Honest & Transparent
Honestly and transparency are key to the success of a project. Our team pride themselves on their integrity and openness from initial contract through to post-completion, offering end-to-end support.
Quality, Craftsmanship, Honesty and Professionalism
30 Years of Experience
Our carefully selected, tight-knit team of construction and carpentry professionals have delivered an unmatched level of service, skill, and craftsmanship to clients for over 30 years.
Fully Qualified & Accredited
Maintaining our team’s knowledge and skill set is essential to ensuring the quality of our work. We are fully accredited and regularly partake in new certifications and courses.
Bespoke Delivery
Each of our projects is undertaken on an entirely individual basis, meaning our range of services can be tailored to the precise requirements of our clients.
Family Owned & Operated
We are a proud family business, owned and operated by leading general carpenter and builder, Martin Jarrald.
Honest & Transparent
Honestly and transparency are key to the success of a project. Our team pride themselves on their integrity and openness from initial contract through to post-completion, offering end-to-end support.
Contact our extension builders FOR A FREE, NO-OBLIGATION CONSULTATION TODAY!

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.

The Guild of Master Craftsman Logo
CITB qualified suffolk builder logo
city and guilds qualified Suffolk builder logo
Paul Butler-Smith
Layham, Suffolk

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.

Sally Fisher
Hadleigh, Suffolk

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.

Sameer Sah
Colchester, Essex

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!

Nicole Knock
Hadleigh, Suffolk

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.

Lisa Herron
Hadleigh, Suffolk

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.

Request a callback
The M Jarrald Construction team are happy to assist with any house extension query. Whether you have precise plans for an extension project or don’t quite know where to start, our extension builders will be happy to guide you to the best solution for your project. Get in contact with us using the form below, reach out via messenger or email, or visit our friendly team in person at our Hadleigh High Street office.

    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.

    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.

    Loft Conversions

    Transform your property’s unused attic into stunningly functional living space, constructed and installed in line with your precise requirements.

    Extensions

    Expand and enhance your home with a beautifully constructed bespoke extension of any scale or style – from traditional brickwork to sleek timber.

    Renovations

    Breathe new life into your space with our renovation services, delivered by construction experts with an eye for both beauty and functionality.

    New Builds

    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.

    Kitchens

    Enjoy an ingeniously functional, visually stunning kitchen, installed by our experts in partnership with our close, high-quality suppliers.