Compare the best family extension layouts for London homes, from kitchen-diners to two-storey additions, with...
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The House Extension Advice Hub
Practical, expert guidance for London homeowners planning extensions, renovations, and structural transformations. Our goal is to provide the clarity you need to move forward with confidence.
LONDON-BASED
Residential building specialists
EXTENSION EXPERTS
House & renovation specialists
PROJECT SUPPORT
Planning & build support
TRANSPARENT VALUE
Clear quotations & managed projects
FULLY INSURED
Fully insured trades & trusted workmanship
01
Planning & Compliance
Navigating permitted development, conservation constraints, and party wall logistics.
02
Investment & Value
Strategic budgeting, optimizing ROI, and scaling your long-term home equity.
03
The Build Lifecycle
Managing complex timelines, trade coordination, and residential living transitions.
04
Spatial Strategy
Comparative analysis of extension footprints, light mapping, and volume design.
Latest Advice & Guides
London Extension Guide for Growing Families
Our London extension guide explains extension types, planning, budgets and build stages, so you can...
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What Does a Wraparound Extension Cost in London?
Understand wraparound extension cost London homeowners can expect, what changes the price, and how to...
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How to Choose Building Contractors in London
Choosing building contractors for a London extension? Learn what to check, what to ask and...
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Side Return Extension Victorian Terrace Ideas
A side return extension Victorian terrace can turn a narrow, dark kitchen into a family...
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12 Top Renovation Mistakes to Avoid in London
Avoid costly disruption with practical advice on the top renovation mistakes to avoid, from unclear...
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Party Walls: What London Homeowners Need to Know
Understand party walls before your London extension or loft conversion. Learn when notice, consent and...
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Small Kitchen Extension Ideas That Work Hard
Small kitchen extension ideas for London homes: smart layouts, natural light and practical planning to...
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How to Choose Extension Builders in London
Learn how to choose extension builders in London, assess quotations, planning support and project management,...
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Frequently Asked Questions
How much does a house extension cost in London?
The cost depends on the size of the extension, specification, structure, access, finishes and whether planning or structural work is required. After a site visit, MBT Group can provide a clearer quotation based on the property and the work involved
Do I need planning permission for a house extension?
Some house extensions can be carried out under permitted development rights, while others need planning permission. This depends on the size, location, property type and previous extensions. MBT Group can help guide you on the likely route before work begins.
Can I live in my home during the extension?
In many cases, yes. It depends on the scale of the work, whether services are being disrupted and how much of the property is affected. We will discuss this during the planning stage so expectations are clear
How long does a house extension take?
A typical single storey extension may take several months depending on size, complexity, approvals, weather, access and finishes. Larger wraparound or double storey extensions can take longer
Does MBT Group handle the full project?
MBT Group can support the process from early consultation through to construction and completion, including coordination with designers, structural input and relevant trades