Unlock Your Home's Potential in Derry

We specialize in Victorian, Edwardian, and modern property conversions across Derry. Let us help you realize your home's full potential.

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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 Derry?

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

Increase Derry Property Value

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

Stay in Derry

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

Quick Derry Installation

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

Extra Derry Living Space

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

Expert Derry Loft Conversion Specialists

Transform your Derry 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 Derry, we create bespoke solutions tailored to your lifestyle.

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

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

Derry Loft Specialists

CITB Certified • Derry Planning • Building Regulations

Types of Loft Conversions in Derry

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

Velux Loft Conversion in Derry

Velux Loft Conversion Derry

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

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

Dormer Loft Conversion Derry

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

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

Hip-to-Gable Conversion Derry

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

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

Mansard Loft Conversion Derry

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

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

Derry Loft Conversion Requirements

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

Derry Planning & Regulations Guide

Permitted Development in Derry

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

Derry 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 Derry housing stock.

Party Wall Agreements

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

Complete Derry Loft Conversion Services

Free Derry Loft Assessment

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

Derry Design & Planning

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

Derry Structural Work

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

Derry Windows & Dormers

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

Derry En-Suite Bathrooms

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

Derry Interior Finishing

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

Our Derry Loft Conversion Process

Derry Planning & Design Phase

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

Derry Construction Phase

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

Free Derry Survey

Professional space assessment

Derry Design & Planning

Architectural drawings and approvals

Expert Derry Construction

Professional loft specialists

Loft Conversions Across Derry

Derry City Centre

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

Derry Suburbs

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

Derry Period Properties

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

Derry Conservation Areas

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

Derry Loft Conversion Statistics

500+

Derry Loft Conversions Completed

4.9/5

Average Derry Customer Rating

15+

Years Serving Derry

100%

Derry Building Control Approved

Why Choose Building Group for Derry Loft Conversions?

Local Derry Expertise

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

Derry Quality Guarantee

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

Derry Service Areas

  • Derry City Centre
  • North Derry
  • South Derry
  • East Derry
  • West Derry

Recent Derry Loft Conversion Projects

Hip to Gable Loft Conversion in Derry

Victorian Terrace - Derry

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

Project Value: £48,000

Dormer Loft Conversion in Derry

Modern Semi - Derry

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

Project Value: £42,000

Mansard Loft Conversion in Derry

Period Property - Derry

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

Project Value: £65,000

What Derry Homeowners Say

★★★★★

"Exceptional value for money. We got quotes from three Derry firms and Building Group offered the best spec for the price."

- Emily Lewis, Derry

★★★★★

"The neighbors are jealous, the kids are happy, and the house value went up. The trifecta! Best investment in Derry."

- Maria Garcia, Derry

★★★★★

"I used to hit my head on the rafters. Now I can do jumping jacks in my new Derry bedroom. Incredible transformation."

- James Walker, Derry

Derry Loft Conversion Pricing Guide

Derry Loft Conversion Costs

Loft conversion costs in Derry vary based on type, size, and specifications. Typical Derry 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 Derry quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Derry survey and detailed quote.

Estimated Investment for Derry Lofts

A transparent guide to typical conversion costs in the Derry 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 Derry properties and subject to survey.

Meet Your Derry Project Lead

Senior Loft Consultant for Derry

Mathew Oneill

Senior Structural Specialist

"I oversee all loft conversions in the Derry 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

Create a New Master Bedroom in Derry

Don't let your loft be a 'maybe' space. Make it a 'definitely' space! Call the Derry experts.

Book Free Derry Loft Survey