Rear Extensions in London

Extend into your garden and create a larger, brighter living space with a carefully planned rear house extension.

A rear extension is one of the most popular ways to add space to a London home, creating a dramatic improvement without changing the entire property.

single-story extension cost

It allows homeowners to extend the back of the property and create a larger kitchen, dining room, living area or open plan family space.

MBT Group builds rear extensions that are designed to feel like a natural continuation of the home, with careful attention to structure, light, layout and finishing. They often allow for larger kitchens, better garden access, improved natural light and a more sociable ground floor layout.

Rear Extension Architectural Focus

Kitchen & Dining Integration

Transform a cramped ground floor footprint by pushing into your back garden space. This creates an expansive, open-plan hub perfect for high-spec kitchen islands, central dining tables, and fluid entertaining zones.

Modern Glazing & Rooflights

A masterfully engineered rear extension maximizes overhead illumination. By strategic structural placement of sleek roof lanterns, custom frameless skylights, and expansive bi-fold doors, we flood your home with natural sunlight.

Open Plan Family Living

Break down the restrictive partitions of traditional London properties. We introduce clear span steel frameworks to combine food prep, casual family seating, and indoor-outdoor living tracks into a singular wide runtime.

Design & Build Considerations

  • Optimizing ceiling height and daylight entry lines
  • Strategic placement of rooflights, lanterns, and modern glazing
  • Maximizing views and establishing a smooth garden connection
  • Careful structural engineering and load-bearing layout planning
  • Maintaining consistent, seamless finishes between old and new zones
  • A structural build process managed properly from start to final finish

Planning & Permitted Development

Some rear house extensions can be carried out under permitted development rights, depending on specific depth criteria, overall heights, boundary distances, and property types. Others will require a formal planning permission submission.

Even where full planning is not required, technical building regulations will always apply. This encompasses critical structural integrity, thermal insulation values, drainage path alterations, and ventilation checks. MBT Group handles the full route, identifying constraints early to guide your layout safely forward.

Frequently Asked Questions

How much does a house extension cost in London?

The cost depends on the size of the extension, specification, structure, access, finishes and whether planning or structural work is required. After a site visit, MBT Group can provide a clearer quotation based on the property and the work involved

Some house extensions can be carried out under permitted development rights, while others need planning permission. This depends on the size, location, property type and previous extensions. MBT Group can help guide you on the likely route before work begins.

In many cases, yes. It depends on the scale of the work, whether services are being disrupted and how much of the property is affected. We will discuss this during the planning stage so expectations are clear

A typical single storey extension may take several months depending on size, complexity, approvals, weather, access and finishes. Larger wraparound or double storey extensions can take longer

MBT Group can support the process from early consultation through to construction and completion, including coordination with designers, structural input and relevant trades

Speak To MBT Group About Your Rear Extension

If you are considering a rear extension, arrange a site visit with MBT Group to understand what may be possible.