About Our Loft Conversion Services
At Nelhams & Sons Ltd, we transform unused loft spaces into beautiful, functional rooms that add significant value and living space to your home. Our loft conversion work goes beyond simply adding a room – each project is individually designed to maximise headroom, natural light, and storage whilst seamlessly integrating with your existing property to create stunning bedroom suites, home offices, or playrooms.
Our Loft Conversion Services
We design and build loft conversions that transform your home’s unused roof space into valuable living areas. At Nelhams & Sons Ltd we specialise in:
Dormer Loft Conversions
Full-width rear dormers and box dormers that maximise headroom and floor space, creating generous bedroom suites with ensuite bathrooms and built-in storage.
Velux & Rooflight Conversions
Cost-effective loft conversions using roof windows to flood your new space with natural light whilst maintaining your property’s external appearance and character.
Hip-to-Gable & L-Shaped Conversions
Comprehensive structural alterations for semi-detached properties, creating substantial additional space through hip-to-gable extensions and L-shaped dormer configurations.
How We Work
Creating your perfect loft conversion is a carefully planned process from initial survey through to completion. Our proven approach ensures structural integrity, Building Regulations compliance, and minimal disruption to your family.
| Step | What to Expect |
|---|---|
| Initial Consultation | We discuss your loft conversion requirements, assess roof structure, and establish budget parameters |
| Structural Survey | Detailed roof survey including headroom measurements, structural beam assessment, and staircase planning |
| Design Development | We create design concepts maximising headroom, natural light, and usable floor space |
| Planning Assessment | Determine whether planning permission is required or if Permitted Development applies to your conversion |
| Structural Engineering | Structural calculations for new floor joists, roof alterations, and load-bearing requirements |
| Building Regulations | Comprehensive Building Regulations submission covering structure, fire safety, insulation, and staircase design |
| Detailed Quotation | Fixed-price quote covering all structural work, dormers, staircases, insulation, and finishing |
| Contract Agreement | Finalise contracts, construction schedule, and access arrangements |
| Construction Phase | Careful loft conversion construction with scaffolding, roof alterations, and staircase installation |
| Building Control Inspections | Regular Building Control visits to verify structural work, fire safety, and insulation standards |
| Completion & Certification | Final Building Control sign-off, completion certificate, and handover of your new loft room |
Structural Expertise
Expert structural engineering for safe, Building Regulations-compliant loft conversions
Space Maximisation
Clever design to maximise headroom, storage, and usable floor area in your loft
Quick Conversion
Most loft conversions completed within 6-8 weeks with minimal disruption
Exceptional Value
Loft conversions typically add 20% property value – excellent return on investment
Why Choose Nelhams & Sons Ltd for Your Loft Conversion?
Our experienced loft conversion team understands the structural complexities and Building Regulations requirements for successful roof space transformations. We combine structural engineering expertise with thoughtful design to create beautiful loft rooms that maximise your property’s potential. Each conversion is carefully planned to ensure adequate headroom, natural light, safe staircase access, and proper insulation whilst adding maximum value to your home.
- Structural engineering expertise for complex roof alterations
- Comprehensive Building Regulations knowledge and compliance
- Planning permission and Permitted Development guidance
- 48+ years experience in Surrey and West London loft conversions
- Fire safety compliance including escape windows and fire doors
Best Surrey Business Award
Frequently Asked Questions About Loft Conversions
Do I need planning permission for a loft conversion?
Most loft conversions can be completed under Permitted Development rights without planning permission, provided they meet specific criteria: maximum 50 cubic metres additional volume (terraced houses) or 40 cubic metres (semi-detached/detached), roof materials matching the existing house, and no extension beyond the existing roof slope facing a highway. However, properties in conservation areas, listed buildings, or flats require planning permission. We assess your specific situation during the initial consultation.
What types of loft conversions do you build?
We specialise in dormer loft conversions (rear and front dormers), Velux rooflight conversions maintaining the existing roofline, hip-to-gable conversions for semi-detached properties, mansard loft conversions with near-vertical roof slopes, and L-shaped dormer conversions. Each type suits different property styles and budget requirements. We recommend the most appropriate conversion type during our initial survey based on your roof structure and requirements.
How long does a loft conversion take?
Most loft conversions take 6-8 weeks to complete from start to finish. Velux conversions are quickest at 4-6 weeks, whilst dormer conversions typically require 6-8 weeks, and hip-to-gable conversions need 8-10 weeks due to structural complexity. These timelines include Building Control inspections, structural work, staircase installation, and finishing. We provide detailed schedules and maintain regular communication throughout the project.
Can I stay in my home during the loft conversion?
Yes, most families remain in their homes during loft conversion work. Access is typically through an internal hatch, with scaffolding providing external access for materials. There will be some noise during structural work and staircase installation, which we schedule for core working hours. We seal off work areas with dust sheets, maintain tidy sites, and schedule disruptive activities to minimise impact on your daily routine.
Will my loft conversion meet Building Regulations?
Absolutely. All loft conversions must comply with Building Regulations covering structural integrity, fire safety, insulation, staircase design, and ceiling heights. We handle all Building Regulations submissions and arrange inspections at key construction stages. Our conversions include fire-rated doors, escape windows, structural steelwork calculations, appropriate insulation, and compliant staircases. Upon completion, you receive a Building Control completion certificate essential for property sales.
How much value will a loft conversion add?
Loft conversions typically add 15-20% to property value, often exceeding the construction cost. A well-executed loft conversion creating an additional bedroom with ensuite bathroom can add £40,000-£70,000 in Surrey and West London. The exact increase depends on your location, property type, and quality of conversion. Loft conversions consistently rank as one of the highest-return home improvements, making them an excellent investment in your property.
