Looking for Home Extensions Near You?
We support homeowners searching for extension builders in Grantham, house extensions in Lincolnshire, and extension contractors in Nottinghamshire. Whether you’re creating a bigger kitchen-diner, adding a utility room, extending for a growing family, or improving layout and flow, we’ll guide the build stage with a customer-first approach.
A good extension is more than extra square metres. It should feel like part of the original home — aligned levels, consistent finishes and details that work day-to-day. We focus on getting the structure right, coordinating trades properly, and finishing with care so the end result feels “built-in” rather than bolted on.
If you’re searching for extension builders near me or a trusted house extension contractor, KOG Building Projects Ltd delivers customer-focused home extension building with clear communication, tidy site standards and a practical, organised approach. Whether you’re considering a single storey extension, double storey extension, rear extension, side return extension or a wraparound extension, we help you understand the best option for your property and budget. If you’re unsure which route is right, we’ll talk through your goals, site constraints and timescales, then explain the most sensible way to achieve the extra space you need.
Below are the most requested extension sub-services homeowners commonly search for online in the UK: extension groundworks and foundations, structural alterations and RSJ installation, brickwork and blockwork for extensions, roofing and roofline changes, knock-throughs and open-plan layouts, first fix and second fix coordination, plastering and internal finishing, windows and doors fitting, and support with Building Control / Building Regulations compliance. If you don’t see your exact requirement listed, get in touch — we’ll advise on the best route and provide clear next steps and a quote for your house extension.
If you’re searching for a single storey rear extension near me, KOG Building Projects Ltd provides a customer-focused build service designed to add real, usable space without the stress. A rear extension is one of the most popular ways to create an open-plan kitchen extension, kitchen-diner, or larger family room that connects to the garden with improved light, flow and day-to-day practicality. As an experienced building contractor, we keep your project organised with tidy site standards, clear scheduling and straightforward communication from start to finish.
Our most requested UK single storey rear extension sub-services include extension groundworks and foundations, structural knock-throughs and RSJ installation, brickwork and blockwork, roof construction and roof lanterns/skylights preparation, bi-fold doors or sliding doors installation coordination, first fix and second fix trade sequencing, plastering and internal finishes, and support with Building Control / Building Regulations compliance. If you’re unsure what layout will work best, we’ll talk through your goals and site constraints and advise on the best route to achieve the space you need.
If you’re searching for a double storey extension near me or two storey extension builders, KOG Building Projects Ltd delivers a customer-focused service that adds space upstairs and downstairs in one well-managed project. A double storey house extension is often the best route for growing families—commonly used to create extra bedrooms, a new bathroom or ensuite, a bigger landing, and a more practical ground-floor layout at the same time. As a reliable building contractor, we keep your extension organised with clear scheduling, tidy site standards and straightforward communication from start to finish.
Our most requested UK double storey extension sub-services include extension foundations and groundworks, structural alterations and RSJ installation, brickwork and blockwork, floor and roof structure coordination, matching existing brickwork and roofline detailing, first fix and second fix trade sequencing, stairs/landing alterations, plastering and internal finishing, plus support with Building Control / Building Regulations compliance. If you’re unsure whether a double storey extension is right for your property, get in touch — we’ll talk through your goals, site constraints and the best way to achieve the space you need.
If you’re searching for a side extension near me or reliable side extension builders, KOG Building Projects Ltd provides customer-focused house extension building that improves your layout without moving home. A side house extension is ideal for using wasted side space to create a wider kitchen extension, a practical utility room, an extra downstairs WC, or a dedicated home office. It’s often the smart option when a rear-only extension won’t fix the flow of your ground floor, and you want a more usable, better-connected layout.
Our most requested UK side extension sub-services include extension groundworks and foundations, structural alterations and RSJ installation, brickwork and blockwork, roof construction and roofline matching, windows and doors fitting coordination, drainage alterations, first fix and second fix trade sequencing, plastering and internal finishes, and support with Building Control / Building Regulations compliance. If you’re unsure whether a side extension is possible for your property, get in touch — we’ll talk through your goals, site constraints and the best route to achieve the extra space you need.
If you’re searching for a side return extension near me or side return extension builders, KOG Building Projects Ltd delivers a customer-focused service designed to transform tight layouts—especially in period homes with a narrow alley or side return. A well-planned side return kitchen extension can unlock a wider kitchen-diner and improve light and flow, often without sacrificing too much garden space. As a trusted building contractor, we keep the build organised with tidy site standards, clear scheduling and straightforward communication from start to finish.
Our most requested UK side return extension sub-services include extension groundworks and foundations, structural alterations and RSJ installation, brickwork and blockwork, roof construction and roof lantern/skylight coordination, drainage alterations, matching external finishes, first fix and second fix trade sequencing, plastering and internal finishing, and support with Building Control / Building Regulations compliance. If you’re unsure whether a side return extension is suitable for your property, get in touch — we’ll talk through your goals, site constraints and the best route to achieve the space you need.
If you’re searching for wraparound extension builders near me or a trusted wraparound extension contractor, KOG Building Projects Ltd delivers customer-focused wraparound house extensions designed for major layout improvements. A wraparound extension combines a rear extension with a side return extension to create an L-shaped footprint—ideal for a larger open-plan kitchen-diner, family room, or multi-zone living space with better light and flow. As an experienced building contractor, we keep the project organised with clear scheduling, tidy site standards and straightforward communication from start to finish.
Our most requested UK wraparound extension sub-services include extension groundworks and foundations, structural knock-throughs and RSJ installation, brickwork and blockwork, roof construction and roof lantern/skylight coordination, bi-fold doors or sliding doors installation coordination, drainage alterations, first fix and second fix trade sequencing, plastering and internal finishes, and support with Building Control / Building Regulations compliance. If you’re unsure whether a wraparound extension is right for your home, get in touch — we’ll talk through your goals, site constraints and the best route to achieve the space you need.
If you’re searching for a garden room extension near me or a rear living extension builder, KOG Building Projects Ltd creates customer-focused spaces that feel bright, practical and properly connected to the garden. A rear living extension (often used as a garden room or family room) is ideal for modern family life, entertaining, or multi-purpose living—giving you a comfortable space with better light, flow and day-to-day usability. As an experienced building contractor, we keep the project organised with tidy site standards, clear scheduling and straightforward communication from start to finish.
Our most requested UK garden room / rear living extension sub-services include extension groundworks and foundations, brickwork and blockwork, roof construction and roof lantern/skylight coordination, large openings with bi-fold or sliding doors, structural knock-throughs and RSJ installation, first fix and second fix trade sequencing, plastering and internal finishing, floor preparation, and support with Building Control / Building Regulations compliance. If you’re unsure which design will work best for your property, get in touch — we’ll talk through your goals and advise on the best route to achieve a light, usable rear extension.
Extensions go smoothly when the sequence is clear. We focus on the reality of build stages — access, deliveries, trade availability, and the order work must happen in to avoid rework. This helps keep disruption lower and quality higher.
You shouldn’t be left guessing. We keep communication straightforward: what’s completed, what’s next, and what decisions are needed. That makes the project feel calmer and more controllable.
We check the build at important points — not just when everything is covered up. Catching small issues early protects the finish and avoids costly late-stage fixes.
The finishing stage matters. We take a snagging mindset so the extension feels properly complete: tidy details, clean edges, and practical functionality you’ll notice every day.
Every home is different, but a consistent process helps deliver consistent results. Whether you’re planning a single storey rear extension in Grantham or a wraparound extension in Lincolnshire, our approach keeps the build controlled and transparent.
We discuss what you need from the extension — space, layout, light, storage and function. If you already have drawings, we review them for build practicality. If you’re still early stage, we’ll help clarify what’s involved and what to consider
before you commit.
Most extension delays come from poor sequencing and unrealistic timescales. We plan the order of work and highlight what may affect progress (access, materials, weather, lead times). You get a clearer picture of what the build journey will look like.
The foundation stage sets the standard for everything above. We coordinate excavation, footings and baseworks before progressing to structural walls and the shell. Throughout, we maintain tidy standards and sensible safety around your home.
Once the extension is sealed and secure, internal work can progress more efficiently. This includes roofing coordination and ensuring openings and junctions are formed correctly to protect long-term performance.
This is where the project becomes “real”. We coordinate internal stages so trades don’t clash, finishes remain consistent, and details aren’t rushed. The aim is a high-quality finish that looks and feels integrated with the rest of your home.
We complete final checks and work through snagging items so the extension is ready for everyday use. If your project involves sign-off stages, we help keep the process organised so you’re not chasing paperwork at the end.
Many homeowners start by searching “can I extend without planning permission?” or “permitted development extension”. The answer depends on your property type, location, design and whether any restrictions apply. Some extensions may fall under Permitted Development, while others may need planning permission or a prior approval route for larger single-storey rear extensions.
Regardless of planning, Building Regulations can still apply to most extension work. That’s why compliance and inspection planning matters. We help you understand the build stage requirements, coordinate around inspection points, and keep the project moving toward a smooth completion.
Note: rules and local constraints vary. We recommend confirming requirements with your local authority or planning professional before finalising designs.
If you’re researching extension builders near me and comparing quotes, remember that build quality is often hidden in the details: levels aligning, clean junctions, consistent finishes, and good coordination between stages. Our approach focuses on build practicality and a well-finished outcome, not shortcuts that create
We provide building contractor services across Grantham and surrounding locations in Lincolnshire and Nottinghamshire. Use the links below to view local service pages.
Not sure if we cover your area? Send your postcode and project details.
Some extensions may be possible under Permitted Development, while others require planning permission or a prior approval route. Requirements vary by property, design and local restrictions, so we recommend confirming early before committing to final plans.
Timescales vary based on size, access, complexity and lead times. We focus on realistic programmes and good sequencing to help reduce delays
and keep the build moving steadily.
Yes. We help keep the build aligned with key requirements and support inspection planning so the project progresses smoothly toward completion.
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