At A1 Complete Builders, our Barn & General Conversions service transforms redundant agricultural buildings, outbuildings or under-utilised spaces into beautifully finished homes, workspaces or bespoke living areas that retain character while offering modern comfort. We take pride in respecting original structures — stone walls, oak beams, slate roofs — preserving those distinctive features that give each conversion a unique charm. Every project begins with careful planning, detailed structural surveys and close collaboration with clients to ensure legal compliance and seamless integration of utilities, insulation, glazing and interiors. Whether you want a rustic barn renovation, a garden outbuilding conversion, or an imaginative reuse of a general structure, our team brings craftsmanship, passion and attention to detail. From foundations and roofing to joinery, plumbing and finishes, we oversee the full process. With A1 Complete Builders you’ll enjoy a space that’s not just renovated, but reimagined — combining heritage, quality and your vision under one roof.
A1 complete builders have been instructed by our existing client to undertake the conversion of their existing stable to office space and build an adjoining large double garage, excavating through solid granite and moving around 800 tons of soil/sub base and granite to enable works in 2023
A1 Complete Builders have been instructed to convert a cob barn and build a timber frame kitchen extension at St Allen, Near Trispen. This barn was formally a cow shed and is being converted using traditional materials to include cob blocks and lime.
A1 Complete Builders were awarded contracts to convert this old barn and build 2 further extensions by our existing client.
The barn has been stripped leaving the stone walls in situ, block built up gable end and a Glulam beam fitted with timber frame dwarf walls built to increase height and enable two bedrooms to first floor. Construct walls and fit wooden staircase. Also benefiting with underfloor heating run by a ground source system, three 50 meter trenches with coil pipes connecting to a manifold.
The first extension is one storey timber frame again with a Glulam beam fitted supporting rafters. Construction of a bedroom ensuite with family bathroom and lounge.
Underfloor heating installed again all run by ground source heating. The second extension is a new kitchen being built later this year.
Duration of time on site - 12 weeks
We have been awarded a contract to convert a loft in to a en suite master bedroom to include two dormers. A steel frame to be fixed in place then fixing new floor joists and construction of the dormers. The usual insulation and internal finishes. Winder stairs supplied by D.J. Newman. All materials sourced locally. Plumbing by C.G plumbing & Heating and Electrics by York Electrics.
Duration of time on site: 12 weeks
A former boat house Converted into a residential house a few years ago and has now had extensive work carried out with an internal steel frame fitted, all joinery supplied by Charlestown Joinery.
Internally finished to a very high spec with The Kitchen/Bathroom studio, Threemilestone, Porclin Plank bathroom tiles floor to ceiling, Kitchen fitted with high gloss units and finished off with Granite worktops. All internal doors fitted with solid oak.
Duration of time on site: 10 months
This Hay/Grain Barn was converted in 2006 with all Granite stones excavated on site and dressed by a local stone Mason. Exposed stone work internally and exposed original beams.
This small Barn was extended with a stone Extension to the rear and a 20 square meter Conservatory to the side.
All Floors were finished in solid Oak and Solid Slate flag stones.
Duration on site: 6 months
A court yard of Barns converted as a joint venture in 2004.
These Cow sheds were converted to a very high standard using locally sourced materials, joinery work was supplied by Top Notch Joinery. Original beams exposed and Delabol Rag slates roofs all graded and original.
These Barns sold between £140,000.00 - £200,000.00
Office: 01726 883 388 (Mon-Fri 8am - 4.30pm)
Mobile: 07979 934 678 (Call anytime)

Extensions & Renovations
Lime and Cob Work
Demolition & Groundworks
Conservation & Restorations
Cookie Policy
Privacy Policy
Terms and Conditions

© Copyright A1 Complete Builders - All rights reserved | Website design by Edworthy Media and Technology Limited