What services do you offer?

B&N Building specialises in house extensions, loft conversions, bespoke joinery, basement conversions, kitchen design and installation, as well as complete home renovations and refurbishments.

Do you work in areas outside of Chigwell?

Yes, we operate throughout London, especially in North and North East London, as well as Essex, including Chigwell and surrounding areas.

How do I get a quote for my project?

You can request a free quote by emailing us or filling out the online form on our Contact Us page. We’ll arrange a consultation to discuss your project in detail.

How long does a typical project take?

The timeline varies depending on the size and scope of the project. After an initial consultation, we provide a detailed schedule so you know what to expect.

Are you a licensed and insured contractor?

Yes, B&N Building is fully licensed and insured, and all work is carried out to high safety and quality standards.

Can you help with planning permission for extensions and loft conversions?

Yes. We can assist with the planning permission process, including guidance on paperwork and local council approvals.

Do you offer bespoke design services?

Yes, we offer bespoke design services tailored to your needs, whether for a new kitchen, joinery, or other custom work.

How can I keep track of my project’s progress?

We maintain open communication throughout the project and provide regular updates so you are informed every step of the way.

Loft Conversions – Transform Your Loft with B&N Building

At B&N Building, we are experienced loft conversion, specialising in turning underused attic spaces into bright, functional rooms that add both space and value to your home. Whether you dream of an additional bedroom, a quiet office, or a modern studio, our team has the skills and experience to bring your vision to life.

With years of expertise, we combine design knowledge, structural understanding, and quality craftsmanship to deliver bespoke loft conversions. As professional loft conversion, we handle every stage of the process, ensuring your project is completed smoothly and to the highest standards.

Why choose B&N Building for your Loft Conversion project?

Selecting the right builders makes all the difference. Here’s why homeowners choose us for their loft conversions:

Specialist Expertise – As dedicated loft conversion builders, we understand design, structural requirements, and building regulations.
Custom Designs – We tailor every conversion to suit your lifestyle and property style, blending seamlessly with your existing home.
Full Service – From consultation and planning to construction and final finishes, we manage the entire project.
High-Quality Workmanship – Our builders use premium materials and proven techniques to deliver durable, stylish results.
Clear Communication – We prioritise transparency, keeping you updated at every stage.

Loft conversion project with flat roof dormers under scaffolding protection. — A completed loft conversion with flat roof dormers, expertly built by BN Building.

The benefits of a Loft Conversion

A loft conversion is one of the smartest investments you can make in your home. Here are the key benefits:

Increase Living Space – Create a new bedroom, office, playroom, or studio without losing garden space.
Boost Property Value – A professionally designed loft conversion can add up to 20% to your home’s market value.
Adapt to Your Needs – Our loft conversion builders design spaces that suit your family’s lifestyle.
Cost-Effective Expansion – Converting the loft is often more affordable than moving to a larger home.
Flooded with Natural Light – Roof windows and dormers create bright, welcoming spaces.

Types of Loft Conversions We Build

As professional loft conversion builders, we provide a wide range of conversion styles tailored to different property types:

Dormer Loft Conversions

The most popular style, dormer conversions extend the roof to add headroom and floor space. Ideal for creating bedrooms or bathrooms.

Mansard Loft Conversions

A mansard conversion adds a sloping roof with a flat top, maximising space. This option is perfect for period properties or homes with low-pitch roofs.

Hip-to-Gable Loft Conversions

By extending a hipped roof into a gable, this conversion creates significant additional space, often used in semi-detached or detached homes.

Velux (Rooflight) Conversions

The simplest and most budget-friendly option, Velux conversions use roof windows to bring light into the loft without major structural changes.

L-Shaped Conversions

Ideal for larger properties, L-shaped conversions combine two dormers to create expansive, multi-functional spaces.

Our Loft Conversion Process

Working with professional loft conversion builders ensures your project runs smoothly from start to finish. Our process includes:

Consultation and Survey – We assess your loft space and discuss your vision.
Design and Planning – Our team prepares bespoke designs tailored to your property.
Planning Permission (If Needed) – We handle all approvals and liaise with local authorities.
Construction – Our skilled builders carry out structural work, installations, and finishes with minimal disruption.
Final Touches and Handover – Once complete, we add the finishing details and walk you through your new space.

Commitment to Quality and Compliance

At B&N Building, quality and compliance are at the core of every project:

Building Regulation Compliance – All our loft conversions meet the latest safety and structural requirements.
Collaboration with Experts – We work with architects and engineers to guarantee structural integrity.
Fully Insured – For peace of mind, every project is fully insured from start to finish.

Recent Loft Conversion Projects

Here are a few examples completed by our expert loft conversion builders:

A dormer conversion creating a spacious master suite with en-suite bathroom.
A Velux conversion turning an attic into a bright study and guest bedroom.
A hip-to-gable conversion in a semi-detached home, providing two new bedrooms.
A mansard conversion in a period property, designed as an open-plan studio with bespoke joinery.

Start Your Loft Conversion with B&N Building

If you are looking for skilled and reliable loft conversion builders, B&N Building is here to help. From consultation to completion, we deliver loft conversions that enhance your home’s space, comfort, and value.

Whether you want a simple Velux design or a large mansard conversion, our builders provide professional results every time.

Contact us today for a free consultation and discover how our team of expert loft conversion builders can transform your home.

B&N Building – Professional Loft Conversion Builders.

Frequently Asked Questions About Loft Conversions

The cost of a loft conversion varies depending on factors such as the size of the loft, the complexity of the design, and the materials used. Generally, prices can range from £40,000 to over £80,000. We recommend scheduling a consultation to receive a detailed quote based on your specific requirements.

Building a Loft Conversion Under Permitted Development

In England, you can undertake a loft conversion under permitted development rights, provided it adheres to specific guidelines:

Volume Limitations: The additional volume created by the loft conversion should not exceed 40 cubic meters for terraced houses and 50 cubic meters for detached and semi-detached houses.
Height Restrictions: Any extension to the loft must not surpass the existing roof’s highest point. Additionally, the loft extension should maintain a minimum distance of 20 centimeters from the original eaves, except when converting a hip roof to a gable roof.
Material Consistency: Materials used in the loft conversion must closely resemble those of the existing structure. While UPVC might not be suitable for external cladding, it may be used for windows under certain conditions.
Window Specifications: Any windows installed on a side elevation within 10.5 meters of a boundary must either be obscure-glazed or designed to be non-opening, ensuring privacy and light without overlooking issues.
Geographical Restrictions: The property must not be located in designated areas such as conservation areas, Areas of Outstanding Natural Beauty, National Parks, World Heritage Sites, or the Broads, where stricter planning controls apply.

These conditions ensure that the loft conversion is in harmony with the existing property and its surroundings while maximizing the available space without the need for explicit planning permission.

Yes, hiring an architect for a loft conversion is often beneficial. Architects bring expertise in maximizing the use and aesthetics of the space, ensuring compliance with legal standards, and can help increase the value of your property. Their skills are invaluable in complex projects that require detailed planning and innovative solutions.

Reducing the Cost of Your Loft Conversion

To minimize the expenses associated with a loft conversion, consider the following strategies:

Simple Design: Opt for a straightforward design that minimizes structural changes and complexity. Avoid elaborate features or bespoke fittings that can significantly increase costs.
Pre-Planning: Thoroughly plan your loft conversion with clear objectives and specifications. This helps avoid costly alterations during the construction phase.
DIY Elements: Take on some of the finishing tasks yourself, such as painting, decorating, or even installing fixtures. This can save labor costs, though it’s important to only undertake tasks you’re confident in handling to maintain quality.
Reuse Materials: Where possible, reuse existing materials or purchase reclaimed materials to save on the cost of new supplies.
Competitive Bidding: Obtain multiple quotes from different contractors to ensure competitive pricing. Be clear about what is included in the quotes to avoid hidden costs.
Project Management: Managing the project yourself can eliminate the cost of hiring a project manager. However, this is only recommended if you have sufficient time and some experience in construction or renovation.
Timing: Schedule your project during off-peak times if possible. Contractors may offer better rates during less busy periods.

By implementing these strategies, you can significantly reduce the overall cost of your loft conversion while still achieving a functional and aesthetically pleasing outcome.

The 4-year rule in town planning allows property owners to gain immunity from planning enforcement action by the local planning authority for unauthorized residential developments that have been in place for at least four years. This rule applies to structures that have been used continuously as dwellings during this period.

A loft conversion that has been completed without the requisite planning permission becomes immune from enforcement action if it has been in place for more than 10 years. This rule means that the local authorities cannot enforce you to revert the changes after this period.