Bespoke Timber Buildings & Oak Framed Extensions
James Alexander is a family-run business designing and building bespoke timber buildings across the south of England. From classic garden rooms and glazed extensions to handcrafted oak-framed structures, we create spaces that transform the way you live, designed around you and built to last a lifetime.
Two Specialist Businesses. One Family. One Standard of Quality.
Over the years, our expertise has grown into two distinct but complementary businesses — each focused on a specific area of bespoke timber building, and each sharing the same unwavering commitment to quality, craftsmanship and customer care.
GLAZED EXTENSIONS, GARDEN ROOMS, ORANGERIES & CONSERVATORIES
James Alexander Garden Rooms
Our garden rooms and glazed extension business specialises in beautifully designed timber buildings that expand your home and transform the way your family lives. From stunning orangeries and classic conservatories to bespoke garden rooms and kitchen extensions, every building is crafted in premium FSC-certified timber and designed specifically for your home.
Whether you're looking for a light-filled family dining room, a kitchen that opens to the garden or a garden room that becomes the heart of your home, we design it around you.
Our glazed extension services include:
OAK FRAMED EXTENSIONS, ANNEXES, GARAGES & OUTBUILDINGS
James Alexander Oak Buildings
Our oak buildings business specialises in handcrafted oak-framed structures from orangeries, sunrooms and garden rooms to annexes, garages, home offices and stables. Every frame is manufactured to our personal specifications by the award-winning Country Hardwood in Milton Keynes, using FSC-certified timber and the latest engineering technology.
If you're looking for the warmth, depth and natural beauty that only real oak can deliver — combined with the precision of modern design and the reassurance of a 20-year structural guarantee — this is where to start.
Our glazed extension services include:
GALLERY
Some Previous Projects
What you get with a James Alexander build?
Whichever business is right for your project, you'll always get the same thing: a building that's been thought about carefully, crafted with pride and delivered by a team that genuinely cares about the result.
Fully bespoke designs: every building is created specifically for your home, never adapted from a template
Premium FSC-certified timber: sustainably sourced, beautifully finished and built to last
End-to-end service: from design and planning through to manufacture and installation, we handle everything
Planning expertise: we manage all applications, building regulations and structural calculations in-house
20-year structural guarantee: on every oak-framed building as standard
A family team you can trust: small enough to care, experienced enough to deliver
Why Choose us
The James Alexander way - We do not believe that large amounts of oak make for the perfect extension or garage—the right amount does.
Bespoke Design: If we can draw it, we can make it. We tailor every beam, truss, and joint to your vision.
Quality Materials: We use European QPA planed oak, jointed using traditional carpentry methods.
Planning Support: We handle all planning applications, building regulations, and structural calculations, removing the stress from your to-do list.
Peace of Mind: We offer an outstanding 20-year structural guarantee on our buildings.
Contact Us
Fill in the form below or drop us a call to chat with one of the team today
01823 762176