LSP Builders has a longstanding reputation for constructing house extensions. From Market Harborough to Corby, and in all surrounding Northamptonshire and South Leicestershire areas, our building contractors help customers to expand their homes with a professional range of services. If you have had a recent addition to the family, require a creative space or need a room for guests to stay, LSP Builders can construct house extensions to architectural specifications.


We hold initial face-to-face meetings with homeowners in Market Harborough, Corby and the surrounding areas. LSP Builders completes a full assessment of the site, discusses viable options for house extensions and explains the groundworks and construction process in detail.

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Our initial survey identifies if the available land is suitable for an extension and the build is compliant with current building regulations. Following the survey, we prepare a full quotation for your consideration. Quotations include a full breakdown of the scheduled work and the materials required to complete the actual build.


LSP Builders offers turnkey solutions as part of a full project management service, communicates with you during all stages of the job, works alongside your preferred architect if required, manages the budget and completes the project inside the agreed timescale.


LSP Builders uses premium materials on all builds.



Subject to the project specification, house extensions may require planning permission. Like all reputable building contractors, we help you to gain planning permission by supporting your application form and notifying local authorities in Market Harborough, Corby or surrounding locations of our proposed work. We deal with planning departments regularly and this often helps us to gain the required permissions and approvals much sooner.


Where applicable, Party Wall Agreements need producing and agreeing with adjoining homeowners. This requires party wall surveyors to visit the site and put the agreement in place. If you are considering your options for house extensions, we advise that you make neighbouring property owners aware of your intentions as soon as possible.


A Party Wall Agreement includes – but is not limited to – brief details of the proposed work, agreed working hours and a time limit for commencement of the project.



Customers in Northamptonshire and South Leicestershire, including those in Market Harborough and Corby, can use the expert knowledge of our building contractors and ask any questions they have regarding the planning and construction of house extensions. Whilst building extensions, LSP Builders understands that not everyone has the option to move out of their home.


Our project managers and building contractors work with you to keep your living environment clean, safe and practical should you wish to remain at home during ongoing construction.


You can expect:


  • Minimal disruption to your home life
  • Surrounding areas kept clean and tidy
  • A safe environment for you and our workforce


Where required, we use subcontractors to carry out additional works on house extensions. This includes any plumbing, heating, electrical and plastering requirements for the build. At LSP Builders, we do all that is needed to provide homeowners in Market Harborough, Corby and the surrounding areas with a full extension service, professionally managed and delivered by our building contractors – and always with the needs of the customer firmly in mind.

To discuss house extensions, call 07715 443190. LSP Builders covers Market Harborough, Corby and all locations in Northamptonshire and South Leicestershire.

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Garage Conversions In Market Harborough
Building Contractor In Corby
Garage Conversions In Market Harborough
Building Contractor In Corby