Master Builders for Dormer & Velux Lofts in Harrow

We don't just build lofts; we build 'peace and quiet'. Get that home office or parents' retreat you desperately need in Harrow.

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10-Year Warranty On all Structure
FMB Member Vetted Master Builders
Fully Insured £5m Public Liability
TrustMark Gov. Endorsed Quality

Why Choose Loft Conversion in Harrow?

Transform your Harrow property without moving. Add space and value with our expert loft conversion service.

Increase Harrow Property Value

Add up to 20% to your Harrow property value with a professional loft conversion.

Stay in Harrow

No need to leave Harrow. Get the space you need in your current home.

Quick Harrow Installation

Most Harrow loft conversions completed in 4-6 weeks with minimal disruption.

Extra Harrow Living Space

Create bedrooms, offices, or playrooms perfect for Harrow family living.

Expert Harrow Loft Conversion Specialists

Transform your Harrow property's unused loft space into beautiful, functional living areas with our professional loft conversion services. Whether you need an extra bedroom, home office, or playroom in Harrow, we create bespoke solutions tailored to your lifestyle.

Our experienced Harrow team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Harrow conversion maximizes space, natural light, and property value.

  • Dormer loft conversions in Harrow
  • Hip-to-gable conversions for Harrow homes
  • Mansard loft conversions in Harrow
  • Velux window installations across Harrow
  • En-suite bathrooms for Harrow lofts
  • Harrow planning permission support
Harrow loft conversion specialist at work

Harrow Loft Specialists

CITB Certified • Harrow Planning • Building Regulations

Types of Loft Conversions in Harrow

Choose the perfect conversion type for your Harrow property to maximize space and value

Velux Loft Conversion in Harrow

Velux Loft Conversion Harrow

The most cost-effective option for Harrow properties using roof windows for natural light. Perfect for Harrow homes with adequate headroom.

  • Most affordable in Harrow
  • Minimal structural work
  • No Harrow planning permission usually
  • Natural light throughout
Dormer Loft Conversion in Harrow

Dormer Loft Conversion Harrow

Add valuable floor space and headroom to your Harrow property with single or multiple dormers. Popular choice in Harrow for space optimization.

  • Maximum Harrow space gain
  • Improved headroom
  • Additional windows
  • Cost-effective for Harrow
Hip-to-Gable Conversion in Harrow

Hip-to-Gable Conversion Harrow

Transform sloping hip roofs into vertical gable walls in your Harrow home, significantly increasing usable floor space. Ideal for Harrow semi-detached properties.

  • Substantial Harrow space increase
  • Improved room proportions
  • Better natural light
  • Enhanced Harrow property value
Mansard Loft Conversion in Harrow

Mansard Loft Conversion Harrow

The premium option for Harrow properties creating maximum space with near-vertical walls. Perfect for period properties in Harrow.

  • Maximum Harrow floor space
  • Multiple rooms possible
  • Period Harrow property suitable
  • Highest value addition

Harrow Loft Conversion Requirements

Your Harrow property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Harrow specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Harrow property and budget. Most Harrow conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.

Harrow Planning & Regulations Guide

Permitted Development in Harrow

Most terraced and semi-detached homes in Harrow have a 40-50 cubic meter allowance for roof extensions without full planning permission. We handle all Lawful Development Certificate applications for you.

Harrow Building Control

Every conversion we build is inspected by approved inspectors to ensure compliance with Part B (Fire Safety) and Part L (Insulation) of the building regulations specific to Harrow housing stock.

Party Wall Agreements

Living in a terraced or semi-detached house in Harrow? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.

Complete Harrow Loft Conversion Services

Free Harrow Loft Assessment

Comprehensive evaluation of your Harrow loft space, structural assessment, and advice on the best conversion type for your property.

Harrow Design & Planning

Architectural drawings, 3D visualizations, and planning permission applications for Harrow properties. We handle all regulatory approvals.

Harrow Structural Work

Steel beam installation, floor strengthening, and staircase construction by qualified Harrow engineers.

Harrow Windows & Dormers

Velux roof windows, dormer construction, and window installations to maximize natural light in Harrow homes.

Harrow En-Suite Bathrooms

Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Harrow loft.

Harrow Interior Finishing

Plastering, decorating, flooring, and interior design services to create beautiful Harrow living spaces.

Our Harrow Loft Conversion Process

Harrow Planning & Design Phase

  • Free Harrow Survey: Comprehensive assessment of your loft space
  • Design Development: Architectural drawings for Harrow properties
  • Harrow Planning Applications: Local authority submissions where required
  • Structural Calculations: Engineering assessments for Harrow building control
  • Fixed Price Quote: Detailed Harrow pricing with full breakdown

Harrow Construction Phase

  • Project Management: Dedicated Harrow project manager
  • Structural Work: Steel beams and strengthening in Harrow
  • Roofing & Windows: Dormer construction for Harrow homes
  • Services Installation: Harrow certified electrical and plumbing
  • Interior Finishing: Quality finishing to Harrow standards

Free Harrow Survey

Professional space assessment

Harrow Design & Planning

Architectural drawings and approvals

Expert Harrow Construction

Professional loft specialists

Loft Conversions Across Harrow

Harrow City Centre

Professional loft conversions throughout Harrow city centre, including period properties, modern homes, and conservation areas requiring specialist Harrow planning expertise.

Harrow Suburbs

Expert loft conversion services across all Harrow suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Harrow.

Harrow Period Properties

Specialist conversions for Harrow's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.

Harrow Conservation Areas

Expert handling of Harrow conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.

Harrow Loft Conversion Statistics

500+

Harrow Loft Conversions Completed

4.9/5

Average Harrow Customer Rating

15+

Years Serving Harrow

100%

Harrow Building Control Approved

Why Choose Building Group for Harrow Loft Conversions?

Local Harrow Expertise

With over 15 years of experience in Harrow, we understand local planning requirements, building regulations, and architectural styles. Our Harrow team delivers exceptional loft conversions that enhance your property value.

Harrow Quality Guarantee

  • Harrow Planning Experts: We handle all local authority requirements
  • Local Harrow Team: All work by trusted local professionals
  • 10-Year Guarantee: Full warranty on all Harrow conversions
  • Fixed Harrow Pricing: No hidden costs or surprises
  • Insurance: Fully insured for Harrow projects

Harrow Service Areas

  • Harrow City Centre
  • North Harrow
  • South Harrow
  • East Harrow
  • West Harrow

Recent Harrow Loft Conversion Projects

Hip to Gable Loft Conversion in Harrow

Victorian Terrace - Harrow

Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Harrow terrace. Added 30sqm of living space.

Project Value: £48,000

Dormer Loft Conversion in Harrow

Modern Semi - Harrow

Dormer loft conversion in modern Harrow semi-detached. Created two bedrooms and bathroom for growing family.

Project Value: £42,000

Mansard Loft Conversion in Harrow

Period Property - Harrow

Mansard conversion in Harrow conservation area. Luxury master suite with dressing room and ensuite.

Project Value: £65,000

What Harrow Homeowners Say

★★★★★

"Building Group provided excellent advice on the best layout for our Harrow terrace. The result is better than we imagined."

- Jessica Green, Harrow

★★★★★

"Building Group turned my scary spider attic into a 5-star hotel suite. My guests in Harrow never want to leave!"

- Richard Harris, Harrow

★★★★★

"Fast, efficient, and friendly. Turned our dark Harrow attic into a bright, airy yoga studio. Thank you Building Group!"

- Christopher Hall, Harrow

Harrow Loft Conversion Pricing Guide

Harrow Loft Conversion Costs

Loft conversion costs in Harrow vary based on type, size, and specifications. Typical Harrow prices: Velux conversions £20,000-£30,000, Dormer conversions £35,000-£45,000, Hip-to-gable £40,000-£55,000, Mansard conversions £45,000-£65,000. All Harrow quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Harrow survey and detailed quote.

Estimated Investment for Harrow Lofts

A transparent guide to typical conversion costs in the Harrow area (2025 Estimates)

Conversion Type Suitability Timeframe Price Range
Velux (Roof Light) Existing headroom > 2.3m 4-6 Weeks £20k - £30k
Dormer (Rear) Semis & Terraces 6-8 Weeks £35k - £50k
Hip-to-Gable End-terrace & Semi-detached 8-10 Weeks £45k - £60k
Mansard Period Properties / London Styles 10-12 Weeks £50k - £75k+

*Prices are indicative for Harrow properties and subject to survey.

Meet Your Harrow Project Lead

Senior Loft Consultant for Harrow

Mathew Oneill

Senior Structural Specialist

"I oversee all loft conversions in the Harrow area. My job is to ensure your project meets local building regulations while maximizing every inch of space. I'm happy to visit your property for a preliminary structural assessment."

  • 20+ Years Exp.
  • CIOB Member

Claim Your Free Design Consultation in Harrow

From planning permission to the final coat of paint, we handle it all. Start your Harrow project now.

Book Free Harrow Loft Survey