A.S.E Design and Build Ltd

No Job to Big No Job to small

Unit 205, 29, Castle St, Kingston Upon Thames, KT1 1DN Directions

Tel 07827 917795
   Now closed Open Wednesday 09:00 - 17:00

Why Choose Us?

Highest Standards
We Are Specialists
Family Run Business

Business overview

Bring all your Home dreams and ideas to reality

We design, manage and build loft conversions, house extensions, basements and renovations to create beautiful homes in west and south west London area. Our work is fully covered by insurance. Project managers at A.S.E. Design and Build Ltd are all qualified industry specialists, with significant experience working in the UK building industry. Our work is quality assured and elegant, and delivers the look you want. So what’s it to be? An extra bedroom, on office space, a gym? The possibilities for your home are limitless. If you can imagine it, we can build it!


Side return extension
Image 12 of A.S.E Design and Build Ltd
Side return extension
Loft conversion
Bedroom with ensuite
Bedroom with en-suite
En-suite bathroom
Shower, en-suite bathroom
Living room
Dining area
Master bedroom
Reception room
Loft bedroom
Rear extension
Living room
Master bedroom
Bespoke joinery

Products & Services

Barn Conversions

Basement Conversion

Block Paving


Building Conversions

Building Refurbishments

Building Renovations

Building Services Engineering

Ceiling Contractors


Commercial Builders


Construction Engineers

Damp Proofing

Domestic Maintenance and Repair Services

Fascias and Soffits

Garage Conversions

Home Improvements

House Builders

House Extensions

Imprinted Concrete

Loft Conversions


Mezzanine Floors

NHBC Member

Patio Laying


Paving and Driveways

Paving Supplies



Self Build Homes

Site Engineers

Storm Damage Repairs

Property Maintenance


New Builds


Think twice before accepting cheapest quote

Everything started well after ASE Design and Build had offered the lowest quote for the project. The first few elements of the project were completed on time and to an acceptable standard, unfortunately the low cost then became reflected in an increasingly low build quality, with bodging and making do becoming the default solution rather than taking the time to do things properly. The project overan by 4 months, not helped by Covid, but throughout this time communication was very poor and it became clear that their attention had moved on to a new project, leaving us constantly chasing them to get things finished.
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Would not recommend

ASE Design & Build completed a side return extension for us last summer. The project ran late by 6 weeks, the roof continues to leak despite some minor repair works being undertaken and we were presented with an 'additional works' invoice at the end of the project, despite nothing being mentioned during the build. Unfortunately, due to this experience I would not recommend ASE Design & Build.
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Poor Worksmanship

ASE Design and Build completed a rear and side extension for us in 2019. Initially the works looked good but since completion, we have had a number of leaks at the front and side of the build. Despite asking them to fix this, the on-going issues remained.
He came around to complete patch up jobs, which never really seemed to work and eventually led to a deep mould infestation (see pictures). Ultimately, we had to pay for an independent surveyor to review the build and who stated the roof works were 'poor worksmanship'.
After following all the correct legal advice and timescales, we had to get a second company to fix up the poor work done by ASE and are currently in a court case to re-coup the money for this.
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Loft conversion

Marcus and his team of builders were exelent. Finished my loft conversion in Surbiton on time and in high standart. I'm very greatful for the service. I can't recommend enough.
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House extension from A.S.E. Design and Build Ltd

It was a walk in the park comparing to some stories we heard. A.S.E. Team were on top of everything no matter what issues they came across. And there were few. They handled the project perfectly, kept to the budget, they overrun the project only by 3 days over the agreed schedule of works and quality of work was at the high level. We are very happy with our new extension and would surely recommend A.S.E. Design and Build to everyone.
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