KWS Services
Trusted builders in Manchester for extensions, conversions, renovations, new builds and specialist flooring systems — planned properly, built carefully and finished to a high standard.
House Extension Builders
Add the space you need without moving. We deliver practical, well-finished home extensions that improve layout, comfort and long-term value.
- Single-storey, double-storey, side return and wrap-around extensions
- Kitchen, dining and open-plan extension layouts
- Planning guidance, structural work and final finishes
New Build
From first plans to the final finish, we build bespoke homes with strong structural standards, dependable project management and a clean finish throughout.
- Groundworks, foundations and structural build stages
- Roofing, brickwork, plastering, electrics and plumbing
- Internal and external finishes tailored to your project
Airbnb / HMO Conversion & New Build
We help transform properties into practical, high-yield living spaces for serviced accommodation, HMO use and purpose-led multi-room layouts.
- Layout reconfiguration for multiple rooms and shared spaces
- Bathrooms, kitchens, partitioning and compliant upgrade work
- Ideal for investors, landlords and rental-focused refurbishments
House Renovation & Refurbishment
Upgrade tired spaces into modern, functional homes with complete renovation work managed under one team.
- Full house refurbishment and internal reconfiguration
- Kitchen refurbishment, kitchen installation and layout improvements
- Bathroom refurbishment, tiling, plumbing and finishing works
Loft Conversion / Dormer
Make better use of unused roof space and create a valuable extra room without extending outward.
- Dormer loft conversions and rooflight conversion options
- Bedrooms, offices, en-suites and family-use spaces
- Insulation, staircase work, structural adjustments and final finish
Cellar & Garage Conversion
Convert underused areas into warm, practical living space that fits your family’s needs and adds everyday functionality.
- Home offices, utility rooms, bedrooms, gyms and storage solutions
- Insulation, flooring, lighting, damp considerations and finishing
- Great option when you want more space without relocating
Water Underfloor Heating & Screed
A smart heating and floor preparation solution for modern homes, extensions and renovation projects where comfort and finish both matter.
- Wet underfloor heating pipe systems for efficient heat distribution
- Floor screeding for a level, durable and ready-to-finish surface
- Suitable for extensions, refurbishments and new build properties
Design & Planning Permission Services
Get your project started the right way with professional design support and guidance through the planning permission process.
- Architectural drawings and layout planning
- Planning permission applications and approvals
- Building regulations and compliance guidance
Need help choosing the right service?
Tell us what you want to achieve and we’ll guide you toward the best option for your property, budget and long-term plans.
A Building Team You Can Trust
KWS Builders delivers reliable construction work across Manchester with experienced trades, clear communication and a focus on quality from start to finish.
- 30+ years of combined building experience
- Fully insured and aligned with UK building regulations
- Clear quotes with no hidden costs
- Dedicated project oversight from start to completion
- Quality materials and high-standard finishes
- Trusted by homeowners across Manchester
Accreditations & Trade Standards
KWS BUILDERS
3.7, universal square, Devonshire St, Manchester M12 6JH, United Kingdom
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Frequently Asked Questions
Some projects fall under permitted development, while others may need planning approval. We guide you through this process.
Yes. The vast majority of our jobs include us sourcing all materials handling all personnel and ensuring that the project is completed to the highest standards. This is inclusive in our service.
Our experience has shown that customers who attempt to project manage multiple tradesman and sourcing materials themselves more often than not turns into a false economy with no savings and increased overall costs. You will have a much better experience contracting a company to complete your project from start to finish.
Yes. We do with this most prospective customers. During the time frame of a project being completed, we build excellent relationships with our customers.
They are usually delighted to show you the projects/work we have completed for them.
Most house extensions take 8–16 weeks, depending on size.
We inspect your loft space and confirm suitability and planning requirements.
Yes — we plan work to minimise disruption wherever possible.