Chief Architectural Ltd

Architectural Design For Loft Conversions & Extensions

As a specialist architectural company with over 25 years of experience, Chief Architectural Ltd is dedicated to providing exceptional design services to our clients in Portsmouth and beyond. Our team of highly skilled architectural surveyors have a wealth of knowledge and expertise in designing residential loft conversions and extensions, and we are committed to streamlining the design process to deliver professional quality construction plans.

At Chief Architectural Ltd, we believe that every project is unique and should reflect the individual style and needs of our clients. Whether you're looking for a traditional or contemporary design, we have a track record of delivering beautiful architecture that exceeds our clients' expectations. Using the latest Digital CAD drafting technology, we can create detailed and accurate plans for even the most complex of projects.

If you're looking to make the most of the space in your home, we can help. Perhaps your loft is gathering dust and could be transformed into your new master bedroom, office, or games room for your family. Or maybe your kitchen is too small and could become your new open layout focal point for your family and impress your friends with a bold and chic new makeover. Whatever your needs and desires, we can help you achieve your vision.

We offer a free initial consultation to discuss your project and explore your options. You can book your consultation today using our online calendar or by giving us a call. We are dedicated to providing our clients with exceptional service and delivering projects on time and within budget.

Don't let valuable space in your home go to waste. Let Chief Architectural Ltd help you make the most of the home you already have. We look forward to hearing from you and helping you bring your dream project to life.

We look forward to hearing from you.

Chief Architectural Ltd

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A flat roof dormer is a type of dormer that is commonly used in loft conversions. It involves extending the existing roof structure vertically, creating additional headroom and floor space within the loft area. The flat roof dormer is called as such because the roof of the dormer is flat, as opposed to a pitched roof dormer which has a sloping roof. The flat roof dormer typically has a simple, rectangular shape and is often used to add both headroom and floor space to the loft area. One of the main advantages of a flat roof dormer is that it provides maximum interior space and natural light to the converted loft. It can also be a cost-effective option as it involves less construction work than other types of dormers. However, it's important to note that a flat roof dormer may not be suitable for every property, as it can affect the overall aesthetic of the building. Additionally, flat roofs may require more maintenance than pitched roofs due to water pooling and drainage issues. Overall, a flat roof dormer can be a great addition to a loft conversion, providing additional space and natural light. However, it's important to consult with an experienced architectural surveyor to determine if a flat roof dormer is the best option for your specific property and loft conversion needs.


A rear extension to a home extending the living space of a property outwards from the rear of the existing building. This type of extension is commonly used to add extra space to a property, particularly in areas where space is limited. A rear extension with 27 square metres of living space would provide a significant increase in the usable space of the property. The size of the extension may vary depending on the specific needs of the homeowner, the size of the property, and the local planning regulations. The additional living space created by a rear extension can be used for a variety of purposes, including a larger living room, dining area, or kitchen. It can also provide space for an additional bedroom, home office, or playroom for children. When planning a rear extension, it's important to consider a number of factors such as the design of the extension, the materials to be used, and any required planning permissions. A skilled architectural surveyor can help guide homeowners through the process of planning and constructing a rear extension, ensuring that all necessary requirements are met and the end result meets the needs of the homeowner.


A loft conversion and extension in Portsmouth to add extra space to a property without having to move home. The loft conversion involves converting an existing attic space into a usable living space, a bedroom. The extension involved building an additional space onto the existing property to the side of the building.


A modern extension design is typically characterized by sleek, clean lines, minimalist features, and a focus on natural light and open space. Some popular design elements include floor-to-ceiling windows, sliding glass doors, and open-plan living spaces that seamlessly connect indoor and outdoor areas. A modern extension may also incorporate eco-friendly features, such as solar panels, green roofs, and energy-efficient windows and insulation. The use of sustainable materials, such as reclaimed wood and recycled steel, is also common.

At Chief Architectural Ltd we understand the context surrounding local planning, building regulation policies & structural design. Local planning policies mainly focus on the aesthetics of the design & building regulation policies focus on the practical & structural design. We aim to fulfil both the aesthetic & practical designs required for a successful outcome. The aesthetic values to our Architecture is one of the principal aspects we consider when designing a project. The practical values to our Architecture are durability & costs to construct our designs. The key for a successful design is keeping it site specific & within a sustainable framework design. Sustainable framework design will reduce negative impacts on the environment, promoting the health & comfort of the building occupants, resulting in improved building performance. Incorporating aesthetic & practical values, durability & a sustainable framework in architecture will distinguish an excellent building performance from a poor building performance.


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What Does An Architect Do?

Loft Conversion or Extension?

Designing a loft conversion or extension is a complex process that requires the expertise of an experienced architect. Here are the steps an architect may take when designing a loft conversion or extension:

  1. Site Visit and Assessment: The architect will visit the property to assess the feasibility of a loft conversion or extension. They will check the existing structure, roof height, the site conditions, and the orientation of the building to determine if a conversion or extension is possible and to gather information about the building's style, materials, and surroundings.
  2. Briefing and Concept Design: The architect will discuss the client's requirements and preferences for the loft conversion or extension. This will include the intended use of the space, the style and materials to be used, and any specific needs or requirements. Based on this information, the architect will create a concept design, which includes initial drawings, plans, and elevations.
  3. Planning Permission and Building Regulations: The architect will check if planning permission is required for the loft conversion or extension and will advise the client on the process for obtaining this. They will also ensure that the conversion or extension meets building regulations and will submit the plans to the relevant authorities for approval.
  4. Detailed Design: Once the concept design has been approved, the architect will begin to create detailed drawings, specifications, and schedules. These will include detailed plans for the layout, structural design, materials, and finishes to be used in the loft conversion or extension.
  5. Construction Documents: The architect will create detailed construction documents that provide the builder with all the information they need to complete the loft conversion or extension. These documents will include drawings, schedules, specifications, and details of all the materials and finishes to be used.
  6. Construction Administration: During the construction phase, the architect will oversee the project to ensure that the work is being carried out according to the plans and specifications. They will liaise with the builder and client to resolve any issues or concerns that arise and will conduct regular site visits to monitor progress.

In conclusion, an architect designs a loft conversion or extension by visiting the property, assessing its feasibility, creating a concept design, obtaining planning permission and building regulations approval, creating detailed design and construction documents, and overseeing the construction phase. By following this process, the architect ensures that the loft conversion or extension is designed to the client's requirements, meets all regulations and standards, and is constructed to a high standard.

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Architects Designing Portsmouth Developments

Portsmouth, a coastal city in the South of England, has a rich architectural history and has been home to many stunning homes and buildings over the years. As with any city, home design trends in Portsmouth have evolved over time, with architects playing a significant role in bringing these trends to life. Today, architects in Portsmouth are incorporating several exciting trends into their work, including loft conversions and extensions to residential properties.

Sustainability has become a major focus in Portsmouth's architecture industry, and architects are incorporating environmentally friendly designs into their work. When it comes to loft conversions and extensions, architects in Portsmouth are using eco-friendly materials and incorporating natural elements into their designs. Features such as Velux skylights and green roofs can be incorporated into loft conversions, while extensions can be designed with eco-friendly insulation and energy-efficient features.

Minimalism is another popular trend in Portsmouth's architecture industry, with architects creating functional and aesthetically pleasing spaces with clean lines and open spaces. Loft conversions and extensions can benefit from minimalist designs that maximise the available space while creating a modern, elegant look.

Flexible spaces have also become a popular trend in Portsmouth's architecture industry, with more people working from home and needing multi-functional spaces. Architects in Portsmouth are creating loft conversions and extensions that can be used for work, relaxation, and entertainment, with open floor plans and movable walls that allow for easy customisation and flexibility.

Smart home technology has become an essential part of modern living, and architects in Portsmouth are incorporating it into their designs for loft conversions and extensions. From automated lighting and heating systems to voice-activated appliances, smart home technology makes life more convenient and efficient. These features can be incorporated into loft conversions and extensions to make the space more comfortable and functional.

Finally, outdoor living spaces have become increasingly popular in Portsmouth in recent years, and architects are designing loft conversions and extensions that seamlessly blend indoor and outdoor spaces. With the city's coastal location and pleasant climate, residents are increasingly looking for outdoor living spaces to enjoy. Architects in Portsmouth can incorporate features such as balconies, terraces, and gardens into loft conversions and extensions, creating beautiful and functional spaces for homeowners to enjoy.

In conclusion, architects in Portsmouth are creating stunning designs for loft conversions and extensions that reflect the city's unique character and appeal. By incorporating trends such as sustainability, minimalism, flexible spaces, smart home technology, and outdoor living spaces into their work, architects are creating spaces that are not only functional and beautiful but also eco-friendly and efficient. Whether you're looking to add extra space to your home with a loft conversion or extension, working with a skilled architect in Portsmouth can help you achieve a space that meets your unique needs and reflects the character of this wonderful city.

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Transforming a Detached House in Portsmouth: A Successful Loft Conversion and Extension Project

A Loft Conversion and Extension Project

If you are looking to add extra space to your home, a loft conversion and extension can be an excellent solution. Recently, Chief Architectural Ltd. had the opportunity to work on a project that involved adding a loft conversion and extension to a detached house in Portsmouth, UK. Here’s a brief overview of the project and how we approached it.

Designing the Loft Conversion

The loft conversion included a bedroom with an en-suite shower, a Juliet balcony, a rear elevation dormer, and a front elevation pitched roof dormer. Our team of professionals worked closely with the homeowners to design the new space to their specific requirements.

The bedroom with an en-suite shower was built to ensure optimal use of space while creating a comfortable and functional area. The Juliet balcony was designed to let in natural light and provide a stunning view of the garden. The rear elevation dormer was built to increase the floor area and create more headroom. Finally, the front elevation pitched roof dormer was designed to add a charming look to the property while providing more space inside.

Ensuring Health and Safety

During the construction of the loft conversion, our team ensured that all health and safety procedures were followed. We carried out regular inspections and made sure that the site was secure at all times. We also made sure that all work was carried out with minimal disruption to the homeowners.

Creating the Extension

The extension was designed to create an open-plan kitchen area by removing a wall, creating one large kitchen room. We also added aluminium bi-fold doors to open up the space and provide a seamless connection to the garden.

Our team of professionals designed the extension with the utmost care and attention to detail. We made sure that the design was in keeping with the existing style of the house and that the new space provided a practical and functional solution for the homeowners.

The aluminium bi-fold doors were designed to create a seamless connection between the indoor and outdoor areas. They were carefully installed to ensure that they provided an unobstructed view of the garden and allowed natural light to flood into the room.

Ensuring Health and Safety

The extension was also built with the same high standards of health and safety in mind. We made sure that all work was carried out in compliance with relevant regulations, and we took every precaution to ensure that the construction site was secure at all times.

Delivering Successful Results

In conclusion, the loft conversion and extension project carried out by Chief Architectural Ltd. in Portsmouth was a great success. The new space created by the loft conversion provided the homeowners with a comfortable and functional area, while the extension added extra space to the property and created a stunning open-plan kitchen area. All work was carried out to the highest standards of health and safety, and the final result was a space that the homeowners were delighted with.

If you’re considering adding extra space to your home, contact Chief Architectural Ltd. to see how we can help. Our team of professionals is experienced in all aspects of home renovation and can provide you with the solutions you need to create the home of your dreams.

Architecgtural plans of an extension in Southsea.
Extension in Southsea

At Chief Architectural Ltd, we recently completed the architectural plans and structural calculations for a large detached house located in Southsea, Portsmouth. The client wanted an extension to the rear of the property to create a new kitchen and open plan layout, which required removing a wall to make it a spacious open plan kitchen dining room.

Our team of experienced architectural surveyors worked closely with the client to develop a design that met their specific needs while also adhering to all planning regulations. The extension will require planning permission, and we are providing guidance to the client to ensure that all planning requirements are met. Once planning permission is granted, the next step will be to obtain building regulations.

We conducted detailed structural calculations to ensure that the design meets all safety and structural requirements. As a responsible architectural firm, we take safety very seriously, and we use the latest technology to carry out these calculations to ensure that all our designs are safe and structurally sound. Our rigorous approach ensures that the client can have peace of mind, knowing that their project is in safe hands.

While the extension has not started yet, we are working closely with the client to find a local builder who can bring the project to life. Our team has a wealth of experience working with builders, and we will ensure that the selected builder can deliver the project to the highest standards while also adhering to the agreed budget.

At Chief Architectural Ltd, we pride ourselves on providing a complete service, from initial design to completion of the project. We understand that building regulations and structural calculations can be complex and confusing, which is why we provide clear and concise guidance to our clients throughout the process. We work closely with our clients to ensure that all building regulations are met, and the extension is completed to the highest standards.

If you are considering an extension or any other building project, please do not hesitate to get in touch with us. Our team of experienced architectural surveyors and designers would be delighted to work with you and provide our expertise to create a design that meets your specific needs, while also ensuring safety and compliance with building regulations.

Chief architect loft conversion with balcony project in Portsmouth.
Loft Conversion in Portsmouth

At Chief Architectural Ltd, we are thrilled to have recently completed a stunning loft conversion project in Portsmouth. The project involved designing a large bedroom with an en-suite shower room for a family who required an extra room. The loft conversion was designed under permitted development rules, making the process quicker and more cost-effective for our clients.

One of the key design features of this project was the gable wall construction, which was built to the side elevation to allow for the installation of a new staircase. This innovative solution enabled us to make the most of the available space, ensuring that the loft conversion was both functional and aesthetically pleasing.

We carefully positioned the new staircase above the existing staircase to ensure a smooth flow of stairs. This attention to detail was crucial in ensuring that the loft conversion felt like a natural extension of the existing building and provided a seamless transition between floors.

The rear elevation of the loft conversion featured a flat roof dormer with a Juliet balcony, which provided a beautiful view of the garden. We also included a Velux window to the front of the room to bring in more natural light, creating a bright and welcoming space.

Throughout the project, we maintained regular communication with our clients and the local builder to ensure that the work was carried out to the highest standards. We provided support and guidance at every stage of the project, ensuring that it was completed on time and within budget.

At Chief Architectural Ltd, we are proud to have been involved in this project and to have delivered a beautiful and functional loft conversion that meets our client’s specific needs. If you are considering a loft conversion or any other building project in Portsmouth, please do not hesitate to get in touch. Our team of experienced architectural surveyors and designers would be delighted to work with you and provide our expertise to create a design that meets your specific requirements.