Planning a House Extension in Essex or Hertfordshire?

Whether you're planning a rear extension, side extension, double storey extension or loft conversion, our experienced team manages every stage from design through to completion.

Most projects typically range from £40,000 to £120,000+

  • Full design and build service managed start to finish

  • Proven projects across Essex and North East London

  • 5 star client feedback

Why Homeowners Choose LMP Developments

We take a more structured and honest approach to building, focused on delivering high quality results without shortcuts or uncertainty.

  • Proven projects across Essex and North East London

  • High quality finishes backed by real client results

  • Full project delivery from design through to completion

  • Personal and transparent communication throughout

  • In house trades ensuring better control and consistency

We record and monitor costs on a daily basis to ensure the most competitive price possible, whilst maintaining the highest standard of quality throughout every stage of the project.

Our Extension Options

Whether you need extra living space, a larger kitchen, additional bedrooms or a dedicated home office, we offer a range of bespoke extension solutions designed around your property, lifestyle and budget. Select an option below to get your free estimate.

Double Storey Rear Extension

Add substantial living space and value across two floors.

Double Storey Side Extension

Create extra bedrooms, bathrooms and living space.

Wrap Around Extension

Maximise floor space with a side and rear extension combined.

Single Storey Rear Extension

Create a larger kitchen, dining area or family room.

Single Storey Side Extension

A practical way to increase space and functionality.

Loft Conversion

Transform unused loft space into a beautiful new room.

Not Sure Which Extension Is Right For You? Our experienced team can help you explore the best options for your home, budget and long-term plans.

Upgrade Your Living Space

A well-designed extension does more than add extra room. It transforms how you live, increases your property's value and creates a home that works better for your family's needs.

  • Expanded Living Space

    Create the additional room you need for a growing family, open-plan living, a home office or entertaining guests.

  • Enhanced Property Value

    A professionally built extension can significantly increase the value and appeal of your property.

  • Improved Functionality

    Reimagine your layout and enjoy a home that's better suited to your lifestyle and everyday needs.

Speak with our experienced team about the best extension solution for your home.

Unlock Our Extension Cost Estimator

Enter your details below to unlock our free extension cost estimator and get an instant guide to your potential project costs.

Recent Extension Projects Near You

We have delivered high quality extensions across Essex and surrounding areas, with a focus on clean finishes, strong communication, and reliable delivery from start to finish.

Woodford Green Extension

Bee’s Extension Walkthrough

Bishops Stortford Site Update

If you are planning an extension like these, the most useful next step is getting a realistic idea of cost, scope, and availability so you can move forward with clarity and confidence.

Real Feedback from Recent Projects

If you are serious about moving forward with your extension, we can review your project and arrange a free site visit to understand your space, requirements, and next steps.

How We Work

A Properly Managed Extension Done Right First Time

We are not a turn up and build contractor. At LMP Developments, we guide you through the entire process from initial planning and design through to build and completion so nothing is left to chance.

  • Architects and drawings handled for you

  • Planning and building control fully managed

  • Complete project delivery from start to finish including in house trades

This means you get a smooth, well managed build without chasing multiple contractors or dealing with miscommunication.

Ready to plan your extension?

If you are serious about moving forward with your extension, we can review your project and arrange a site visit to understand your requirements and next steps.

  • Professional guidance tailored to your home

  • Transparent discussion around cost and scope

  • A clear plan for moving forward