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Grey Sofa

The name for home extensions and conversions in Greater Manchester

Don't move, improve with DEC-Approved Ltd. Managing full refurbs, general repairs and extensive alteration tasks, we have the skills and expertise to make your project go off without a hitch. Chat to our team to get the ball rolling.

Residential Properties: Welcome

Your dream home, brought to life

Your home is your sanctuary, and we want to ensure it has everything you need and more. For over 20 years DEC-Approved Ltd have been working with domestic clients across Ashton-Under-Lyne and Greater Manchester to turn home aspirations into reality. 

We appreciate what your property means to you, which is why we conduct alterations and improvements with the care they deserve. Each member of the team is passionate about quality, and we'll work with you each step of the way to guarantee outstanding results. Simply tell us what you have in mind today!

Residential Properties: About Us
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Extensions without the hassle 

Why spend valuable time and money on relocating to a larger property when you could extend what you already have? DEC-Approved Ltd offer invaluable advice to reimagine layouts and see you utilise your space more efficiently. Ideal for bathrooms, kitchens and living areas, a home extension is the perfect way to enhance your property. 

Our multi-skilled team work strategically to manage each stage of the extension, from groundworks to last minute paintwork, to create a space to be proud of. Better yet, increased room may even see your property's market value grow!

From garage to kitchen - the possibilities are endless

Home conversions allow you to transform any unloved room into a space that can be enjoyed for years to come. Changing lofts into guest rooms, garages into entertainment suits, if you can imagine it, DEC-Approved Ltd will try to make it happen.

The opportunity for works depends on the property type, the room you wish to convert, and the purpose of the new space. But this will all be discussed with our specialists, to ensure we get it right.

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Property maintenance

Blocked gutters, cracked walls and damaged render are just some of the signs of wear and tear that DEC-Approved Ltd can rectify. Covering Ashton-Under-Lyne and Greater Manchester both weekdays and weekends, we have the services to keep you on top of property maintenance. ​

By taking care of minor issues before they escalate, we hope to save our customers the expense and inconvenience of extensive repairs down the line. Working quickly and always with the industry's highest quality materials, we hope to provide solutions that last. Learn what we could do for you today.

Residential Properties: Features

Our services at a glance

A selection of what we offer to Greater Manchester

  • House extensions 

  • Landscaping works, including block paving and patio laying 

  • Garage and loft conversions 

  • Damp proofing and control 

  • Maintenance works, such as guttering, plastering and plumbing 

  • Internal and external painting and decorating

  • Asphalt and macadam laying 

  • Ceiling suspension

Residential Properties: Text

"DEC-Approved have recently renovated our old conservatory into an amazing extension and tiled the whole of downstairs. It was a big job due to ongoing water problems in the house but they handled everything for us, and the finished work is exactly what we asked for. The team are lovely, really professional and always cleaned up after themselves. I highly recommend DEC-Approved for any work in the home."

Residential Properties: Testimonials

Give your home the care it deserves

Contact DEC-Approved Ltd to plan your home extension, conversion or general maintenance visit. Send your emails to

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Residential Properties: Price Quote
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