Professional Mansard Loft Extensions in Antrim

Warning: Our Antrim loft conversions are so comfortable, your guests might never want to leave your new spare bedroom!

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10-Year Warranty On all Structure
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Why Choose Loft Conversion in Antrim?

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

Increase Antrim Property Value

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

Stay in Antrim

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

Quick Antrim Installation

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

Extra Antrim Living Space

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

Expert Antrim Loft Conversion Specialists

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

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

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

Antrim Loft Specialists

CITB Certified • Antrim Planning • Building Regulations

Types of Loft Conversions in Antrim

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

Velux Loft Conversion in Antrim

Velux Loft Conversion Antrim

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

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

Dormer Loft Conversion Antrim

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

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

Hip-to-Gable Conversion Antrim

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

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

Mansard Loft Conversion Antrim

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

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

Antrim Loft Conversion Requirements

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

Antrim Planning & Regulations Guide

Permitted Development in Antrim

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

Antrim 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 Antrim housing stock.

Party Wall Agreements

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

Complete Antrim Loft Conversion Services

Free Antrim Loft Assessment

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

Antrim Design & Planning

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

Antrim Structural Work

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

Antrim Windows & Dormers

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

Antrim En-Suite Bathrooms

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

Antrim Interior Finishing

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

Our Antrim Loft Conversion Process

Antrim Planning & Design Phase

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

Antrim Construction Phase

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

Free Antrim Survey

Professional space assessment

Antrim Design & Planning

Architectural drawings and approvals

Expert Antrim Construction

Professional loft specialists

Loft Conversions Across Antrim

Antrim City Centre

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

Antrim Suburbs

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

Antrim Period Properties

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

Antrim Conservation Areas

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

Antrim Loft Conversion Statistics

500+

Antrim Loft Conversions Completed

4.9/5

Average Antrim Customer Rating

15+

Years Serving Antrim

100%

Antrim Building Control Approved

Why Choose Building Group for Antrim Loft Conversions?

Local Antrim Expertise

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

Antrim Quality Guarantee

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

Antrim Service Areas

  • Antrim City Centre
  • North Antrim
  • South Antrim
  • East Antrim
  • West Antrim

Recent Antrim Loft Conversion Projects

Hip to Gable Loft Conversion in Antrim

Victorian Terrace - Antrim

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

Project Value: £48,000

Dormer Loft Conversion in Antrim

Modern Semi - Antrim

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

Project Value: £42,000

Mansard Loft Conversion in Antrim

Period Property - Antrim

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

Project Value: £65,000

What Antrim Homeowners Say

★★★★★

"Building Group were the only company to spot a potential issue with our chimney in Antrim and solved it before starting. True experts."

- Michael Hughes, Antrim

★★★★★

"If you want a loft in Antrim, just book these guys. Seriously. Don't waste time with anyone else. Building Group is the real deal."

- Michael Hughes, Antrim

★★★★★

"The structural work was done quickly and safely. As a Antrim local, I appreciated their knowledge of local planning rules."

- Rebecca Hill, Antrim

Antrim Loft Conversion Pricing Guide

Antrim Loft Conversion Costs

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

Estimated Investment for Antrim Lofts

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

Meet Your Antrim Project Lead

Senior Loft Consultant for Antrim

Mathew Oneill

Senior Structural Specialist

"I oversee all loft conversions in the Antrim 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

Maximize Your Antrim Property Value

Maximize your property's potential. Let our Antrim experts show you what we can do with your roof space.

Book Free Antrim Loft Survey