Frequently Asked Questions

We work exclusively with private homeowners. Our focus is on quality, care, and personalised service—not volume or developer-led work.

We cover most of Greater London. If you’re unsure whether you’re in our service area, just get in touch and we’ll be happy to confirm.

Yes! We offer free site visits and no-obligation quotes. We’ll assess your space and provide personalised advice and recommendations.

Some loft conversions fall under permitted development, but others may require full planning approval. We can guide you through the process based on your specific property.

That depends on your roof shape, property type, and what you’d like to use the space for. We’ll help you choose the right design—just get in touch to start the conversation.

Timelines vary depending on the scope and type of conversion. We’ll provide a realistic project plan during your consultation.

Many homes are suitable for loft conversion, but feasibility depends on several factors including roof structure, available head height, access for stairs and local planning restrictions. 

Even lofts that initially seem unsuitable may still be convertible with the right design approach. Sunny Build recommends a professional assessment to confirm what is possible and compliant for your property. 

Suitability depends on: 

• Roof type and structure 
   
• Internal head height 
   
• Staircase positioning 
   
• Structural load capacity 
   
• Local planning constraints 
   

Sunny Build assesses all of these factors before recommending a conversion type, ensuring realistic expectations from the outset. 

Different roof structures affect how easily a loft can be converted. Some roofs naturally provide more usable space, while others require design solutions to maximise head height and layout. 

Rather than relying on generic advice, Sunny Build evaluates your existing roof structure to determine the most practical approach. 

Building Regulations require safe and comfortable use of the space, particularly around staircases and circulation areas. While more head height offers greater flexibility, solutions may still be possible where height is limited. 

Sunny Build can advise whether design adaptations can make your loft compliant and functional. 

The main loft conversion types include: 

• Dormer loft conversions 
   
• Velux or rooflight loft conversions 
   
• Hip to gable loft conversions 
   
• Mansard loft conversions 
   

Each option varies in suitability, space creation and planning requirements. Sunny Build helps homeowners choose the right option based on property type and long-term use, not assumptions. 

Conversions that alter the roof shape often generate more usable floor area, but they are not always appropriate due to planning rules or conservation restrictions. 

Sunny Build focuses on identifying the best balance between space, compliance and visual impact. 

Yes. Certain conversion types can cost similar amounts while delivering less usable space. These are typically only recommended where external alterations are restricted, such as in listed buildings or conservation areas. 

Sunny Build manages expectations early and advises when alternatives may offer better outcomes. 

Some loft conversions fall under Permitted Development, while others require planning permission. This depends on factors such as: 

• Roof alterations 
   
• Property location 
   
• Conservation status 
   
• Previous extensions 
   

Sunny Build can confirm what permissions apply and handle the process where required. 

Permitted Development allows certain loft conversions without formal planning permission, provided strict criteria are met. 

Sunny Build ensures designs stay within permitted limits where possible or advises when a planning application is required. 

Planning permission considers how a development affects the external appearance and surrounding area. 

Building Regulations ensure the conversion meets safety, structural, insulation and fire requirements. 

Even where planning permission is not required, Building Regulations approval is always necessary. 

If your loft conversion affects a shared wall or structure, a Party Wall Agreement may be required. This commonly applies to terraced and semi-detached homes. 

Sunny Build identifies Party Wall requirements early and can guide you through the process. 

Loft conversions can be possible on listed buildings, but design options may be more limited and approval processes more detailed. 

Sunny Build has experience designing sensitive solutions that respect heritage requirements while improving usability. 

Yes, but external alterations may be restricted. Certain loft types are often selected specifically to comply with conservation guidelines. 

Sunny Build ensures all proposals align with local authority requirements. 

A well-designed loft conversion can improve functionality, appeal and resale potential. However, the impact depends on layout quality, usability and how well the conversion integrates with the rest of the home. 

Sunny Build focuses on practical, future-proof designs that enhance real living value. 

Yes, most insurers require notification before structural works begin. This ensures your cover remains valid throughout the build. 

Sunny Build can advise on what information insurers typically request. 

Loft conversions must comply with fire safety regulations, which may include: 

• Protected escape routes 
   
• Fire-rated doors 
   
• Smoke detection systems 
   
• Compliant stair design 
   

Sunny Build ensures all safety requirements are met and signed off. 

Modern Building Regulations require loft conversions to meet strict insulation and ventilation standards for comfort and energy efficiency. 

Sunny Build designs conversions that comply with regulations while improving year-round comfort. 

In many cases, homeowners can remain in their property during a loft conversion. Disruption levels vary depending on access, structure and project scope. 

Sunny Build plans work carefully to minimise disruption and will advise on what to expect. 

Loft conversions involve complex structural, regulatory and safety considerations. Professional expertise is essential to ensure compliance, durability and insurability. 

Sunny Build provides a fully managed service from design to completion. 

Some extensions fall under permitted development, but others—particularly larger or double-storey builds—may require planning approval. We’ll check this and handle it as part of the process.

Absolutely. We can offer guidance on how to make the most of your space and ensure it works for your lifestyle.

Every build is different. We’ll provide a tailored timeline after visiting your property and understanding the scope of work.

Sunny Build delivers a range of extensions including: 

• Rear extensions 
   
• Side extensions 
   
• Multi-storey extensions 
   

Each project is tailored to how the space will be used and how it integrates with the existing home. 

Open plan layouts are popular but not always suitable. Factors such as noise, heating, structure and lifestyle all influence whether open plan living is the right choice. 

Sunny Build helps homeowners make informed design decisions. 

Some extensions fall under Permitted Development, while others require planning approval. This depends on size, location and property type. 

Sunny Build can advise on the correct route and manage approvals where required. 

Extensions can impact neighbouring properties depending on size and proximity. Regulations exist to manage these impacts. 

Sunny Build considers neighbour implications early and advises accordingly. 

Yes, combining projects can improve overall layout and cohesion. However, this requires careful planning and coordination. 

Sunny Build can assess whether a combined approach suits your property and goals. 

In many cases, it’s possible to stay at home during the build, especially for loft or kitchen projects. For larger renovations, we’ll discuss what’s most practical and comfortable for you.

We manage everything in-house, from start to finish—including structural work, plumbing, electrics, tiling and joinery.

We believe in clear, open communication. If anything unexpected arises, we’ll speak to you straight away and help find a fair and efficient solution.

Yes, we stand by our work and offer relevant warranties depending on the project. We’re happy to explain this during your consultation.

We break the payment into clear stages across the duration of the project. We’ll explain everything upfront so you know exactly what to expect.

Yes. Sunny Build provides a fully managed service covering design coordination, approvals, construction and quality control. 

This ensures consistency and accountability throughout the project. 

Yes. Clear communication is a priority. Homeowners have a dedicated point of contact throughout the build. 

The first step is a conversation. Sunny Build offers professional advice tailored to your property, goals and constraints. 

Contacting the team allows you to explore realistic options before committing to a project.