basement conversion

Basement Conversion Specialists In London

Basement conversions are an exceptional way to add a whole new dimension to your living space.

Trio Group provides basement conversion services in London and has extensive experience in creating fabulous spaces for our clients.

We take care of the whole process of creating bespoke basement conversions, from initial concept and design, excavation, waterproofing, tanking and construction – to fitting and renovating an existing basement.  

At Trio Group, we work closely with our clients to ensure all their requirements are met and try our very best to add value to the project at every stage. 

That way, we make sure our clients are delivered an exceptional project – a space in which they will create many happy memories for many years to come.







Creating exeptional spaces so you can create unforgettable memories.










Trio basement conversion Projects

Could we advise you on your project?

This is where you book your FREE – no obligation – Consultation and you show us the vision you have for the property and we get to take the necessary measurements required to complete the project. 

After all the details have been taken, we sit down with our team managers to discuss and decide how to optimise your space’s in terms of both design and functionality as well as what the best approach to delivering the project will be.

We take care of any planning applications required and our QS will then draw up the scope of work and work schedule needed to complete and deliver the project.

The assigned project manager monitors work across all teams and ensures the project is on track to be completed on time and within budget.



how we do it all


Our Other Services

House Renovation

House Extension

Loft Conversion

Basement Conversion

kitchen renovation

Loft Conversion

Property refurbishment

New & Design Build

Commercial

Let us help you with your project

Providing high quality property and home renovation works for London for over 20 years. 

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