Types of home extensions - We design them all
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Single Storey Extensions
Single storey extensions are one of the most popular types of house extensions. They provide extra living space without the added cost and complexity of a double storey extension. This option is ideal for those seeking a modern update while keeping the build straightforward and on budget.
Cost and Budgeting a single story extension
Many homeowners believe that if you are already digging foundations, you might as well build a double storey extension. In reality, adding a second floor means redesigning layouts, staircases, and extra finishing work – all of which increase your overall cost. A single storey extension offers a smart way to create a larger living area at a more affordable price, making it a top choice among types of house extensions.Increased Home Value and Natural Light
A well-planned single storey extension can significantly add value to your property. By converting smaller, separate rooms into one large open-plan space, you create a layout that appeals to future buyers. A single story extension design often includes features like skylights and large bi-fold doors, which let in plenty of vertical light. This not only brightens the room but also gives your house a modern look that many families find highly desirable. Leading professionals like Essex Architects have embraced these design trends to maximize both appeal and functionality.
Quick Build Process with Minimal Disruption
One of the greatest advantages of a single storey extension is the shorter construction time. With fewer structural changes than a double storey build, your project is completed faster, reducing the disruption to your daily life. This speed of construction means you can enjoy your new space sooner, making it a practical and efficient option among various types of house extensions.
Double-story extensions
Double storey extensions are a proven way to add a substantial amount of extra space and boost your house’s value. By expanding upwards rather than outwards, you can gain double the living area without a huge jump in foundation and roof costs, making it a cost-effective option among types of house extensions.
Cost-effectiveness and Added Space
A double storey extension gives you extra space for living areas or extra bedrooms while keeping build costs manageable. Even though you’re adding a full extra floor, the expense of foundations and roofing stays similar to a single storey build. This means you’re paying less per square meter, which can be more affordable than moving house for additional space. Always factor in additional costs like architects’ fees, project management, and planning application expenses when setting your budget.Design and Layout Considerations
Designing a double storey extension requires careful planning to match the new space with your existing house. The goal is to create a modern update that respects the original style. Using features like large glazing, bi-fold doors, and continuous flooring can open up the space and improve natural light. Trusted professionals, including Essex Architects, often recommend designs that balance practical room layout with a look that integrates well with the house’s existing character.Planning, Regulations, and Build Time
Before you begin, check if your project requires planning permission. Factors like the extension’s overall height, its projection from the original building, and its proximity to boundaries will affect approval. Building regulations, survey costs, and even party wall agreements may come into play. Although double storey extensions usually take longer than single storey builds, careful planning can streamline the process and reduce on-site disruption.
Wrap-around extensions
Wraparound extensions add extra living space and update your home’s appearance by wrapping around the existing structure. They combine a side infill extension with a rear extension to form an L-shaped addition, a smart choice among types of house extensions.
Cost and Structural Considerations
The cost of a wraparound extension depends on several factors. You may need to rework your ground floor plan to merge new and old spaces, with construction costs averaging around £2,000 +VAT per square metre. Structural work is key, as supporting walls on the side and rear might be removed to connect the spaces. This calls for new steel or engineered timber supports with concrete footings. The level of finish and choice of materials will affect the overall price.
Design and Layout Considerations
A wraparound extension creates an L-shaped layout that makes the best use of available space. It fills gaps left by features like garages or small rear extensions, adding room and better light. Large windows or bi-fold doors help bring in natural light and connect the interior with the garden. Professionals such as Essex Architects often work with this style to deliver a balanced, integrated design that suits the home’s existing character.
Planning and Build Time
Wraparound extensions usually require planning permission because they combine two extension types, exceeding permitted development limits. Expect a planning and design stage of around 8 weeks, followed by a construction phase of 4-6 months, depending on the size and complexity of the build. This careful process ensures the final product meets building regulations and fits well with the existing structure.
Porch Extensions
Porch extensions are a cost-effective way to boost your home’s appeal and add valuable space. They create an inviting entrance that not only enhances your home’s curb appeal but also leaves a lasting impression on visitors and potential buyers.
Cost and Value
A front porch extension is one of the most cost-effective improvements you can make. It enhances curb appeal, which is important for potential buyers, and fits well within a balanced house extension design. In many cases, a well-designed porch extension can boost your home’s market value with a relatively low investment compared to other modern house extensions.Design Options
Porch extensions can be designed in both modern and traditional styles. Modern designs may include large windows and minimalistic features, while traditional options can use timber posts and brick plinths. Both styles incorporate solid architectural design principles that align with quality construction standards. This versatility ensures that whether you choose a modern or traditional approach, your porch extension becomes an integral part of your overall house extension plan.Planning and Construction
Although porch extensions are generally simpler projects, they still require planning permission and adherence to building regulations. Working with a professional architect ensures your design meets local requirements and is structurally sound. The process usually involves reviewing the ground floor plan, assessing the necessary structural changes, and planning for efficient construction. These steps help ensure that every element of your porch extension, from cost management to architectural design, is executed with precision and quality in mind.
Outbuilding & Annex Extensions
Outbuildings and granny annexes are popular types of house extensions that offer extra space and improved functionality without the need for a full-scale home renovation. They provide additional rooms for home offices, guest accommodation, or extra living areas while keeping the overall project cost-effective.
Design Options
Outbuildings and granny annexes can be designed in both modern and traditional styles. Modern designs may feature clean lines and large windows, while traditional options often incorporate timber posts and brick details. Professional architectural design, including input from experts like Essex Architects, ensures that these additions complement your existing property. Customization options such as partition walls or integrated storage can further tailor the space to your needs.
Cost and Value
These structures are generally more affordable than larger extensions because they have lower foundation and structural requirements. Many outbuildings and granny annexes fall under permitted development rights—if they remain incidental to the main dwelling—which helps reduce planning and construction expenses. Built with quality construction methods, they can significantly boost your property’s market value without a major investment.
Planning and Construction
Even though these projects are smaller in scale, they still require proper planning and compliance with building regulations. It’s essential to work with a trusted architect to determine whether your outbuilding or granny annex qualifies under permitted development rights or if you need to obtain planning permission. This careful planning process ensures that the construction is executed smoothly and that the new space integrates well with your current home.
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Loft Conversions
Loft conversions offer an effective way to increase your home’s usable space without extending its external footprint. This type of house extension is ideal for creating additional bedrooms, home offices, or recreational areas. Loft conversions are particularly useful in urban areas where outdoor space is limited, and they can significantly boost property value.
Cost and Value
Loft conversions are often a cost-effective solution compared to external extensions. By converting an underused loft, you can add extra living space with minimal disruption to the house’s overall structure. According to Nationwide, adding an extra bedroom and bathroom via a loft conversion can increase a home’s value by around 20%. Quality construction and detailed architectural design—practices endorsed by professionals such as Essex Architects—ensure that your investment adds both practical space and market appeal.
Suitability and Design Options
Not every loft is suitable for conversion. Key factors include available head height, roof pitch, existing roof structure, and the presence of obstacles such as water tanks or chimney stacks. There are several types of loft conversions available, including dormer, mansard, roof light, hip-to-gable, and modular designs. Your choice will depend on your home’s existing structure, budget, and planning restrictions. A well-planned loft conversion not only maximizes space but also offers flexible design options tailored to your needs.
Planning, Building Regulations, and Process
Loft conversions always require building regulations approval, regardless of whether planning permission is needed. In many cases, planning permission isn’t necessary if the new roof does not add excessive volume or alter the existing structure’s external appearance. However, if your property is listed or in a designated area, additional consent may be required. The process involves assessing the loft’s suitability and design potential, securing detailed loft conversion plans and building regulations approval, engaging a qualified builder who understands the specific challenges of loft conversions—from structural reinforcement to insulation and fire safety measures—and coordinating with professionals to ensure compliance with all local regulations and building codes. With careful planning and adherence to best practices for house extensions in Essex, you can turn your loft into a valuable and functional addition to your home.
Garage Conversions
Garage conversions provide an affordable and efficient way to create flexible living spaces within your home. By repurposing underused garage areas, you can add a home office, extra bedroom, gym, or even a small guest room complete with bathroom and kitchenette. This type of conversion offers a quick route to increase your home’s value without a full external extension.
Cost and Value
Garage conversions are one of the fastest routes to add extra floor space. They typically involve less structural work than a traditional extension, meaning lower costs per square meter. Even basic conversions can boost your home’s market value, while more extensive projects—such as double garage conversions—offer even greater flexibility and potential for additional living space. Keep in mind that while interior renovations may not require formal planning permission, any changes to the exterior, such as new windows or cladding, might.
Design and Planning Considerations
A successful garage conversion starts with an assessment of the existing structure—ensuring the foundations, walls, and roof are sound. The design must address essential upgrades like insulation, ventilation, and electrical work to ensure year-round comfort and energy efficiency. Professional guidance is important: experienced Essex architects can help you create a functional space that integrates well with the rest of your home. Their advice is particularly valuable when planning the layout, choosing sustainable materials, and balancing cost with design quality.
Building Regulations and Compliance
Since a garage conversion involves a change of use, it must comply with building regulations. Whether you take the building notice route or submit full structural plans, ensure your project meets all requirements—including damp proofing, fire safety, insulation, and ventilation standards. Always consult with your local planning authority and building control officer to confirm that your garage conversion adheres to all regulations, especially if external features are altered. This careful planning helps secure a safe, durable, and comfortable new space within your home.
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