Unlock your semi's potential with expertly designed single storey, double storey and wraparound extensions that add valuable living space, create open-plan kitchens and transform family homes for modern living.
With over 400 semi-detached extensions completed, we understand how to maximise your home's potential while managing Party Wall requirements and planning constraints.
Rear and side extensions creating open-plan kitchen-diners with bi-fold doors, roof lanterns and seamless garden connections that transform how you live.
Two-storey rear extensions adding master suites, additional bedrooms and bathrooms above expanded ground floor living spaces for growing families.
Complete Party Wall service including surveyor appointments, neighbour communication and award documentation. We've successfully managed thousands of Party Wall agreements.
Expert sourcing of matching bricks, roof tiles and render to ensure your extension integrates seamlessly with your existing 1930s semi, Victorian or Edwardian home.
Roof lanterns, Velux windows, Crittall-style glazing and bi-fold doors engineered to flood your new space with natural daylight throughout the year.
All extensions include building control sign-off, structural engineer certificates and a comprehensive 10-year insurance-backed warranty.
A selection of single storey, double storey and wraparound extensions delivered for semi-detached homeowners across North London.
A proven approach delivering beautiful extensions with careful neighbour management and minimal disruption.
We assess your property, review Permitted Development options, discuss design possibilities and provide guidance on Party Wall requirements and planning strategy.
Architectural drawings, structural calculations and planning applications where required. Party Wall notices served and agreements progressed in parallel.
Foundations, steelwork and building works with daily site management, neighbour communication and thorough protection of your existing home.
Kitchen or bathroom installation, electrics, plumbing, flooring and decoration followed by building control sign-off and warranty handover.
Read what homeowners say about their semi-detached extension experience.
"Our 1930s semi now has a stunning double storey extension with master suite above and open-plan kitchen below. The team matched our original bricks perfectly."
"They handled Party Wall negotiations brilliantly – our neighbour was initially concerned but the team's professionalism won them over. The extension is everything we wanted."
"A wraparound extension transformed our cramped semi into a spacious family home. The roof lantern brings amazing light into our new kitchen-diner."
Serving suburban neighbourhoods from Hampstead to Barnet, Finchley to Muswell Hill.
Golders Green, Temple Fortune, Hampstead Way, North End, Childs Hill.
Finchley Central, Church End, Hendon Lane, Regents Park Road, Dollis Park.
East Finchley, Fortis Green, Cherry Tree Wood, Bishops Avenue, Market Place.
Muswell Hill, Alexandra Park, Fortis Green, Cranley Gardens, Queens Avenue.
Hendon, Brent Cross, West Hendon, Colindale, Sunny Hill Park.
Crouch End, Hornsey, Stroud Green, Harringay, Hornsey Vale.
North Finchley, Woodside Park, Friern Barnet, Whetstone, Totteridge Lane.
Whetstone, Totteridge, Oakleigh Park, Brunswick Park, Friern Barnet.
Expert answers to common questions about extending semi-detached properties.
Share details about your semi-detached home and our team will arrange a survey to discuss your extension options.