Gain an open plan family living space, vaulted kitchen diner, or extra upstairs bedrooms without the stamp duty and upheaval of moving home.
Turnkey Domestic Craftsmanship
A thoughtfully designed house extension transforms how your family uses the property every day. Whether you are extending out into the garden with a vaulted pitched roof and triangular gable glazing, wrapping around a side return to add a utility room and downstairs cloakroom, or building a two storey brick addition, ATD Joinery & Construction delivers the complete package.
Most general builders construct a basic shell and leave you chasing separate carpenters, kitchen fitters, and finishers. Because our heritage is rooted in master joinery as well as structural construction, we take full ownership from foundation excavations and RSJ steelwork right through to fitting your shaker kitchen, laying herringbone floors, and hanging solid oak doors.
Technical Build Specification
Excavation to Building Control approved depths, poured concrete strip or trench fill foundations, new foul and storm drainage connections with rodding access, and high density PIR floor insulation.
Temporary Acrow and Strongboy propping of existing masonry, installation of engineered padstones and structural steel beams, and flush ceiling integration wherever joist geometry allows.
Hand cut vaulted rafters, hipped roofs tiled to match your existing property, or EPDM warm flat roofs paired with thermal break aluminium bi fold doors and roof lanterns.
Full plastering, underfloor or radiator heating, electrical certification, bespoke kitchen and island installation, herringbone flooring, skirtings, architraves, and patio paving.
Tailored To Your Property
Every residential plot across Merseyside has its own character, from 1930s semi detached homes in Allerton and Crosby to detached family residences in Formby and Maghull.
01 · Most PopularExtend the back of your home to create a bright family kitchen, dining, and living space with pitched Velux rooflights, triangular gable glazing, or an aluminium sky lantern.
02 · Maximum FootprintCombine an underused side return or driveway with a rear extension to form an expansive L shaped ground floor layout with room for a separate utility room, pantry, and island.
03 · Two Floors On One FoundationThe most cost effective way per square metre to add both a spacious ground floor living area and an extra double bedroom or en suite bathroom upstairs.
Proven Merseyside Work
South Liverpool (L18)3 PhotosA single storey pitched roof rear extension engineered around a dramatic triangular gable window, three pane black aluminium doors, a structural knock through, and a bespoke navy shaker kitchen with white quartz island.
Maghull & Sefton (L31)4 PhotosA substantial two storey rear extension constructed in carefully matched red brickwork under a hipped tiled roof, delivering an expansive ground floor living and dining suite with a bespoke media wall plus a new first floor bedroom.
Liverpool (L23)3 PhotosA bright single storey red brick rear extension featuring three pitched roof Velux windows, anthracite sliding folding doors, a structural knock through, and a sleek white kitchen anchored by a solid walnut wrap around island.
Formby, Merseyside (L37)3 PhotosA luxury vaulted rear extension and full kitchen transformation combining twin pitched skylights, floor to ceiling sage grey larder cabinetry, a dark espresso island with brushed brass fittings, and warm herringbone flooring.
Verified Google Reviews
“From the moment we met Stephen Flinn we knew he was our man.”
“From day one, the level of professionalism, craftsmanship, and attention to detail (ATD) has been exceptional. A special mention goes to Stephen Flinn, our project manager, whose leadership and communication have been second to none from the moment we met him we knew he was our man. Their dedication and expertise have made what could have been a stressful process feel seamless.”
Tracey Cuckson
Renovation & Rear Extension · Verified Google Review
“Came in bang on budget and the house looks amazing inside and out.”
“Chose ATD Joinery to project manage my 3 part complex extension project as Stephen Flinn made me feel confident in his experience and previous work. Do not regret that decision for one minute. Stephen and team were able to overcome challenges with a smile and came in bang on budget. The work has been excellent, house looks amazing inside and out.”
Mark Longbottom
Three Part Complex Extension · Verified Google Review
“Every aspect ran like clockwork and we lived in the house the whole time.”
“Stephen and the team at ATD have just finished a side and back extension including garage conversion and internal joinery works. From start to finish Stephen and Matt have both gone above and beyond to ensure every aspect of the project has ran like clockwork and the work has been nothing short of flawless. We lived in the house the whole time.”
Olivia Betts
Side & Rear Extension + Garage Conversion · Verified Google Review
Book Your Free Site Visit
Stephen Flinn will visit your property in Liverpool, Maghull, Formby, Crosby, or Merseyside, inspect the structure or review your architectural plans, and prepare an itemised written quotation.
House Extensions Advice
Straightforward answers on planning permission, living at home during building work, stage payments, and Building Control sign off.
Transform a cramped kitchen and separate dining room into a light filled open plan kitchen, island, and family living hub engineered and finished by master joiners.
Unlock the largest unused footprint in your home and turn your attic into a bright master bedroom suite with en suite shower room and bespoke eaves storage.
Open up compartmentalised kitchens and dining rooms with certified RSJ steelwork, or refurbish a dated property from bare brick to showhome finish.
Book a free, no obligation home survey and feasibility visit with founder Stephen Flinn. You will receive honest construction advice and a clear, itemised stage payment quotation.
Direct Merseyside Desk
Send your architectural drawings on WhatsApp, book a free home survey online, or call our Maghull & Liverpool office line.
