Basement Conversions in Highams Park
Bigness Group
Construction, refurbishment and property maintenance across London
About Bigness Group
Founded in 2013, Bigness Group works with homeowners, landlords, developers and commercial clients on new builds, extensions, conversions, refurbishment, maintenance and property upgrades. Its services also include plumbing and heating, electrical repairs, cleaning, kitchen and bathroom installation, commercial fit-outs and architectural glazing.
The company describes a process built around property assessment, surveys, scope and contingency planning, followed by managed delivery, quality checks and a clean handover. It offers planned maintenance and responsive support after completion, and says it works across London and the UK.
Accreditations
- Gas Safe
- Part P
- Public liability insurance
Areas covered
- Barking and Dagenham
- Barnet
- Bexley
- Brent
- Bromley
- Camden
- Croydon
- Ealing
- Enfield
- Greenwich
- Hackney
- Hammersmith and Fulham
Services
- Basement Conversions
- Bathroom Fitters
- Bathroom Renovation
- Builders
- Central Heating
- Electricians
- House Extensions
- Fascias, Soffits & Guttering
- Glaziers
- House Renovations
- Loft Conversions
- Plumbers
- Roofers
- Wet Rooms
Building and conversions
- New build
- House extensions
- Loft conversions
- Basement conversions
- Structural works
- Commercial fit-outs
- Design and planning
Property care
- Planned maintenance
- Reactive repairs
- Property maintenance
- Cleaning
- Waste and site clearance
- Plumbing and heating
- Electrical repairs
- Painting and decorating
- Roof and gutter maintenance
- Garden and outdoor works
- Air conditioning and HVAC servicing
Refurbishment and upgrades
- Property refurbishment
- Retrofitting
- Architectural glazing
- Energy improvements
- Kitchen design and installation
- Bathroom design and installation
- Wet rooms
- Flooring
- Paving and fencing
What their website says about each service
- Basement Conversions
“New Build House Extensions Loft Conversions Basement Conversions”
- Bathroom Fitters
“Our skilled tradespeople handle all aspects of installation, including plumbing, tiling, electrics, and carpentry.”
- Bathroom Renovation
“Transform tired, outdated bathrooms into fresh, modern spaces. We replace old fixtures, upgrade layouts, and add stylish finishes to breathe new life into your home.”
- Builders
“Bigness Group is a UK-based project development and construction company delivering high-quality new build, refurbishment, maintenance, and retrofitting projects.”
- Central Heating
“Plumbing and Heating Services”
- Electricians
“Electrical Repairs & Safety Checks – Wiring, lighting, and fault finding.”
- House Extensions
“New Build House Extensions Loft Conversions Basement Conversions”
- Fascias, Soffits & Guttering
“Roof & Gutter Maintenance – Leak prevention and water damage control.”
- Glaziers
“Architectural Glazing – supplying and installing glazing systems as part of the building envelope, not an afterthought.”
- House Renovations
“Refurbishment – transforming existing spaces with care, quality, and attention to detail.”
- Loft Conversions
“New Build House Extensions Loft Conversions Basement Conversions”
- Plumbers
“Bigness Group provides professional plumbing and heating services across London, supporting homeowners, landlords and developers with planned installations, system upgrades, diagnostics and coordinated plumbing works.”
- Roofers
“Roof & Gutter Maintenance – Leak prevention and water damage control.”
- Wet Rooms
“We design and install contemporary wet rooms and walk-in showers that add value and accessibility while maintaining sleek style.”
What customers say
Bigness completed our loft conversion on time and with outstanding quality. Highly recommended!
Professional team, clear communication, and excellent results on our refurbishment project.
Quick response and reliable maintenance. Our property is in safe hands with Bigness.
Shared on bigness.co.uk.