Use our Extension Cost Calculator to get instant, accurate estimates for your home extension project, including materials, labour, design complexity, and overall budget planning for UK homeowners.
Get a quick UK cost estimate based on your loft type and property size. Final quotes may vary after a full survey.
Complete the form and we’ll estimate your loft conversion cost based on type and property size.
*Use this as an early budgeting tool only. For an accurate price, we’ll need a site visit, drawings and a detailed specification.
A large wrap-around flat roof extension provides maximum ground-floor space by extending across both the rear and side of the property. Its flat roof design creates a clean, contemporary look while offering internal flexibility for open-plan kitchens, dining areas, or spacious living rooms. This wrap-around extension is ideal for homeowners seeking modern aesthetics with seamless indoor-outdoor flow and enhanced property value. With its extended footprint, this type of rear and side extension supports versatile layouts, from family lounges to multifunctional home offices. The simple flat roof structure also allows for practical skylight installation, bringing in more natural light. As a modern renovation choice, it delivers outstanding ground-floor expansion and elevates the overall style of any contemporary home.
A medium wrap-around flat roof extension is perfect for families looking to add extra living space without a full-scale build. It wraps around the back and side of your home, offering room for a kitchen extension, utility area, or dining room. Its flat roof gives a modern touch while maintaining affordability and excellent design flexibility. This medium wrap-around extension enhances everyday living by creating a more open-plan layout with better natural light. The extended rear and side wrap offers added room for storage, seating, or flexible family space. With its simple flat roof structure, this upgrade blends seamlessly with contemporary homes. Overall, it’s a practical and stylish way to increase footprint without major disruption.
A small wrap-around flat roof extension offers a cost-effective way to enlarge your home while making smart use of side and rear space. Ideal for terraced or semi-detached houses, it can create a compact kitchen expansion, office, or playroom. The flat roof keeps construction simple and provides a sleek, modern style with budget-friendly possibilities. This small wrap-around extension makes excellent use of a side return area, transforming narrow spaces into practical rooms. Its compact footprint is perfect for homeowners wanting extra functionality without a major build. With a clean flat roof structure and smart rear wrap design, it enhances natural light and delivers a stylish, space-saving home upgrade.
This extension features two pitched roofs wrapping around the side and rear of the property, creating a classic yet spacious addition. It blends beautifully with traditional homes and offers room for an open-plan kitchen or living space. The roof slopes boost head height and allow natural light through skylights, making it a charming and functional upgrade. This dual-pitched roof extension enhances the character of period properties while adding meaningful ground-floor space. The side and rear wrap design also creates a sense of flow, ideal for family living. With its pitched roof structure, homeowners can enjoy a vaulted-ceiling feel and improved ventilation. Overall, it delivers a heritage-style upgrade that perfectly balances charm, practicality, and modern comfort.
A large wrap-around double-pitched roof extension delivers significant living space with a timeless pitched roof design. It wraps around both the rear and side of the property, making it ideal for open-plan kitchens, dining rooms, or generous family areas. The dual-pitch roof enhances natural light, improves ventilation, and adds architectural character that complements both modern and period homes. This double-pitched roof extension creates a classic roofline that blends seamlessly with traditional façades. Its side and rear wrap offers an expanded footprint perfect for multifunctional living. With its dual-roof structure, homeowners can enjoy a vaulted-ceiling feel and excellent airflow. Overall, it provides a premium ground-floor expansion that elevates comfort, style, and long-term property value.
A small wrap-around double-pitched roof extension adds charm and functionality to compact homes. It offers additional ground-floor space by extending around the side and rear while retaining traditional aesthetics with pitched roofing. Ideal for cottage-style or period properties, it creates cosy yet practical areas such as breakfast nooks, utility rooms, or study corners. This double-pitched roof extension maintains a classic roofline that blends perfectly with heritage façades. The side and rear wrap design maximises a compact footprint, making every metre count. With its gentle roof slopes, it brings in lovely natural light and offers a subtle vaulted feel inside. Overall, it’s a beautiful period home upgrade that adds comfort, warmth, and everyday practicality.
A medium wrap-around single-pitched roof extension adds extra space along the side and rear of your home using a simple sloping roof design. It’s a cost-effective option that blends modern design with practicality. Perfect for kitchen diners, utility rooms, or open-plan living spaces, it allows natural light to pour in through skylights positioned along the angled roof. This single-pitched roof extension creates a sleek, contemporary look that suits both new builds and older homes. The side and rear wrap enhances your home’s footprint without major structural changes. With its clean, lean-to roof design, it offers excellent drainage and a bright, airy interior. Overall, it’s a modern home upgrade that boosts comfort, functionality, and everyday usability.
A small wrap-around single-pitched roof extension is ideal for homes with limited garden or side space. Its sloped roof keeps construction simple and affordable while still adding valuable interior room. Commonly used to extend kitchens or create study or storage areas, this option suits terraced and semi-detached houses needing compact yet stylish additions. This single-pitched roof extension makes excellent use of a compact footprint, allowing homeowners to maximise narrow or unused areas. The lean-to roof design helps bring in natural light while providing efficient rainwater runoff. With its subtle side and rear wrap, it blends seamlessly with both modern and traditional properties. Overall, it’s a smart, space-saving upgrade that enhances practicality and day-to-day living comfort.
This extension design fills the unused side return area and extends into the rear with a classic pitched roof. It’s perfect for Victorian or Edwardian homes with a gap space between boundary walls. The pitched roof adds height and charm, making it ideal for spacious kitchen extensions, dining rooms, or bright open-plan family living areas. This side return extension with a pitched roof enhances natural light and creates a warm, vaulted feel inside. The rear extension component increases the property’s footprint without compromising garden space. With its traditional pitched roof structure, it blends beautifully with period façades while delivering modern practicality. Overall, it’s a superb period home upgrade that offers style, functionality, and a beautifully connected living space.
A medium side infill with a rear-pitched roof extension makes excellent use of the wasted side return while expanding the back of the house. The pitched roof enhances light and airiness while blending beautifully with the existing architecture. It’s a popular choice for creating modern kitchens, breakfast bars, or utility areas while keeping the original character of the home. This side infill extension brings a bright, open feel, especially when paired with skylights along the slope. The rear-pitched roof adds a subtle vaulted effect, improving height and visual space. Its extended footprint allows for flexible layouts ideal for family living. Overall, it’s a practical and stylish side return upgrade that elevates both comfort and functionality.
Perfect for narrow side return spaces, this small side infill and rear pitched roof extension offers functional living space without major structural changes. It creates room for kitchen upgrades, breakfast seating, or additional storage. The pitched roof helps maintain natural light flow and character while keeping costs manageable for homeowners on a budget. This small side infill extension maximises a compact footprint, making clever use of narrow or unused areas. The rear pitched roof provides a gentle vaulted feel, improving height and openness inside the space. Its subtle side return upgrade blends seamlessly with both period and modern homes. Overall, it’s an affordable, space-efficient solution that transforms confined areas into warm, practical living zones.
A large side infill pitched roof extension transforms unused side-return areas into a practical living space. With a traditional sloped roof, it suits period homes and enhances headroom beautifully. It opens up possibilities for spacious kitchens, dining rooms, or lounge areas. This design adds significant value while maintaining visual harmony with the existing property’s architecture. The pitched roof structure creates a subtle vaulted ceiling feel, improving airiness and natural light. Its extended footprint allows for flexible open-plan layouts ideal for modern family living. As a premium side return upgrade, it blends a traditional roofline with contemporary functionality, delivering both charm and long-term practicality.
This medium-sized side infill with a pitched roof is perfect for homeowners wanting extra space without altering the entire house layout. It fills the side return and adds a sloped roof for height and natural light. Popular in terraced houses, it works well for kitchen extensions, utility spaces, or small dining areas. This medium side infill extension enhances everyday living by expanding a narrow footprint into a bright, usable area. The pitched roof structure introduces a soft vaulted feel, improving openness and airflow. With its subtle side return upgrade, it blends seamlessly with both period and modern properties. Overall, it’s a smart, practical solution for creating a more spacious and functional ground-floor layout.
A small side infill pitched roof extension is an affordable way to maximise space in narrow Victorian or terraced homes. It converts unused side passage areas into usable interiors like compact kitchens or pantries. The pitched roof improves airflow and adds charm while keeping construction simple and cost-effective. This small side infill extension makes excellent use of a compact footprint, turning tight spaces into practical day-to-day areas. The pitched roof structure introduces a slight vaulted feel that enhances light and height. As a subtle side return upgrade, it blends beautifully with traditional façades while improving overall functionality. Overall, it’s a smart, space-efficient choice for homeowners wanting extra room without major renovation.
A large side infill flat roof extension creates a wide open-plan space ideal for modern kitchens or living areas. The flat roof allows clean lines and the option for roof lanterns or skylights. It’s perfect for homeowners who prefer contemporary architecture, seamless dining areas, and efficient use of the full side return width. This large side infill extension maximises an extended footprint, transforming narrow side space into a bright, usable zone. The flat roof structure supports roof lantern installation for enhanced daylight. As a premium side return upgrade, it blends beautifully with modern home design while improving everyday practicality. Overall, it’s a stylish and highly functional enhancement for those seeking a spacious, open-plan ground floor.
This medium-sized side infill flat roof extension is a practical solution for improving ground-floor space without major structural alterations. Ideal for kitchens, utility areas, or study corners, it adds functionality with a minimalist flat roof finish. Roof lights can be added to enhance natural light, making the space airy and modern. This medium side infill extension makes efficient use of an extended footprint, transforming unused side returns into valuable living areas. The clean flat roof structure supports skylights or small roof lanterns for brighter interiors. As a versatile side return upgrade, it blends effortlessly with contemporary home design. Overall, it’s an excellent way to gain extra space while keeping the build simple, modern, and cost-effective.
A small side infill flat roof extension makes smart use of narrow side return areas often left unused. Compact but functional, it’s ideal for extending a kitchen or adding storage space. The flat roof design keeps costs low and supports roof windows or lanterns to maintain brightness within the newly created interior. This small side infill extension works perfectly with a compact footprint, turning tight external gaps into practical living zones. The clean flat roof structure blends well with both modern and traditional homes. As a simple side return upgrade, it offers extra space without major renovation. Overall, it’s a cost-effective and stylish way to enhance ground-floor usability and daily comfort.
A large rear double-pitched roof extension expands the back of your home with two symmetrical pitched roof slopes, creating a classic gable-style finish. This design offers excellent ceiling height, natural light, and ventilation. Suitable for open-plan kitchens, family rooms, or dining areas, it blends seamlessly with both rural and traditional-style homes. This double-pitched roof extension enhances the space with a soft vaulted ceiling feel, adding volume and openness. The rear gable design maintains a timeless, traditional roofline that suits character homes beautifully. With its extended footprint, it supports flexible layouts ideal for modern family living. Overall, it’s a premium rear home upgrade that combines charm, practicality, and long-term property value.
A large rear flat roof extension is ideal for homeowners seeking a modern and spacious ground-floor expansion. It stretches across the full rear width of the house, perfect for contemporary kitchens, dining rooms, or living areas. Flat roofing provides a sleek design and allows roof lanterns or skylights to keep the area bright. This full-width rear extension offers an extended footprint, creating a generous open-plan layout that suits busy family life. The minimalist flat roof structure blends effortlessly with contemporary architecture. With options for large glazing or roof lantern installation, it enhances natural light and creates a beautifully airy atmosphere. Overall, it’s a stylish and highly functional modern home upgrade for anyone wanting extra space without compromising design.
This extension features a single large pitched roof extending from the rear of the property. It blends traditional aesthetics with modern open-plan layouts, making it ideal for kitchen-diners or family rooms. The sloping roof increases headroom and suits homes looking for a classic and characterful design enhancement with improved natural lighting. This rear-pitched roof extension creates a subtle vaulted ceiling feel, adding height and openness to the space. The single-pitched structure also supports skylights or roof windows for brighter interiors. With its extended footprint, it allows flexible room layouts without altering the overall style of the home. Overall, it’s a timeless and practical rear home upgrade that balances tradition and modern living beautifully.
A small rear flat roof extension is a cost-effective solution for creating compact yet functional spaces like utility rooms, downstairs bathrooms, or small kitchen extensions. It suits terraced and semi-detached homes with limited garden depth. Its simple flat roof structure keeps construction affordable while still offering a clean and contemporary appearance. This small rear extension makes excellent use of a compact footprint, turning restricted rear areas into practical everyday spaces. The minimalist flat roof structure can also accommodate skylights to enhance natural brightness. As a subtle rear home upgrade, it blends easily with modern and traditional properties alike. Overall, it’s a smart and budget-friendly way to improve ground-floor usability without large-scale building work.
With 15+ years of experience, we specialize in loft conversions, roofing, and garden rooms. As a family business, we focus on quality, clear communication, and client satisfaction.
