Wrap Around Extension Costs in Hounslow
L-shaped extension combining rear and side return - local pricing for Greater London.
Mid-range wrap around extension • per project • 12-18 weeks
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Adjust the sliders below to reflect your project. Each factor is based on what typically affects wrap around costs in Hounslow.
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Get Accurate Local Quotes →Slider figures are indicative guides only, not formal quotes. Final costs depend on site surveys, specifications, and contractor pricing.
About Wrap Around Extension in Hounslow
Considering a Wrap Around Extension project in Hounslow? Getting a handle on the actual costs in advance is essential for making informed decisions. Our calculator uses Hounslow-specific pricing data to provide trustworthy estimates.
According to current 2026 Hounslow rates, expect to pay between £47,250 and £94,500 for Wrap Around Extension. Top-tier installations might exceed this range.
What's Included
- Full architectural design
- Planning application
- Complex foundations
- Structural steelwork
- Large format glazing
- Kitchen/dining installation
- Underfloor heating option
Price Factors
Several factors determine your overall Wrap Around Extension cost in Hounslow. Your home's characteristics, accessibility, and specific requirements all contribute.
The sliders in the estimate calculator above map to these factors — move each one to match your project.
- Total floor area
- Structural complexity
- Roof design
- Glazing extent
- Internal specification
- Garden access requirements
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Ready to get started with your Wrap Around Extension project in Hounslow? Get no-obligation quotes from vetted local installers right away.
Get Quotes →Consumer Advice: Hiring a Tradesperson
Before committing to any wrap around extension project, follow these essential tips to protect yourself and ensure a successful outcome.
Get Multiple Quotes
Always obtain at least 3 written quotes from different contractors. Compare not just prices, but what's included, timelines, and payment terms. Be wary of quotes significantly lower than others.
Check Credentials
Verify the trader is legitimate. Ask for proof of insurance (public liability and employer's liability), relevant trade certifications, and check if they're registered with trade bodies like TrustMark, FMB, or NICEIC.
Review Past Work
Request references from previous customers and photos of completed projects. Check online reviews on Google, Checkatrade, or Trustpilot. A reputable trader will be happy to share their track record.
Get Everything in Writing
Insist on a detailed written contract covering the full scope of work, materials to be used, start and completion dates, total cost, and payment schedule. Never rely on verbal agreements alone.
Be Careful with Deposits
Never pay the full amount upfront. A reasonable deposit is typically 10-25% to cover initial materials. Pay the balance only upon satisfactory completion. Avoid cash payments where possible.
Understand Your Rights
Under the Consumer Rights Act 2015, work must be carried out with reasonable care and skill. If things go wrong, you have the right to request a repair, price reduction, or refund.
Agree Clear Timelines
Establish a realistic project timeline with key milestones. Include clauses for delays and ensure you're informed of any changes. Good communication throughout prevents misunderstandings.
Check Planning Requirements
For major works, confirm whether planning permission or building regulations approval is needed. The contractor should advise, but ultimately it's your responsibility as the homeowner.
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