FAQS

Frequently Asked Questions about Residential Architecture and Design

frequently asked questions

Do I need planning permission for my project?

Not all projects require planning permission, as some smaller works fall under permitted development rights. However, this depends on factors such as the type of property, its location, and the scale of the work. As your architects, we can help determine whether planning permission is necessary and guide you through the process, ensuring all requirements are met to avoid delays or complications.

What is the difference between planning permission and building regulations approval?

Planning permission focuses on the scale, aesthetics, and impact of your project
on the surrounding area, along with the use of the building, while building regulations
approval ensures that your design meets safety, structural, and environmental
standards.

We’ll handle both aspects for you, submitting applications and liaising with
authorities to secure the necessary approvals for your project. We usually prepare the building regulations package after a successful planning application. 

How much does an extension cost to build?

As of 2025, construction costs are typically calculated at around £2500-£2800 per sq.m ex VAT. It’s important to factor in additional costs such as knocking through existing walls, any necessary internal remodelling work, including steel supports, and potential upgrades to bathrooms, kitchens, or other elements.

It also depends on your build route – if it’s a DIY, a self managed or using a main contractor.

For a more accurate and detailed cost breakdown throughout the project, you may wish to appoint a Quantity Surveyor (QS) or an estimator as part of your design team. Alternatively, Build It Cost Estimation offers great impartial cost breakdowns to help you plan your budget.

What permissions and approvals do I need for my project, and how can you assist in obtaining them?
The permissions required depend on the scope of your project and local regulations. Common approvals include planning permission, and following that, building regulations. We help by navigating these processes, preparing necessary documentation, and ensuring compliance with the relevant authorities.
How long does it typically take to obtain planning permission?
The duration of a planning application can vary, but on average, it takes around 8 to 12 weeks for a decision to be reached. However, more complex projects or those requiring additional information may take longer. We work diligently to prepare comprehensive applications, increasing the likelihood of a smooth and timely approval process.
What is a planning consultant, and how can they benefit my project?

A planning consultant is a specialist in navigating planning policies. They provide expert advice on obtaining planning permission, understanding local requirements, and resolving any potential challenges. While they are often associated with complex or sensitive projects, planning consultants can be invaluable for smaller projects too, such as new dwellings, conversions, or navigating prior approval processes. At JNC Architecture, we frequently collaborate with planning consultants on various projects to ensure your project is well-prepared, increasing the likelihood of approval and streamlining the process for a smooth outcome.

What is a Party Wall Award, and when is it required for my home project?
A Party Wall Award is a legal document that outlines the rights and responsibilities of property owners when construction work may affect a shared wall or boundary. If your project involves work on or near a party wall, such as an extension or excavation close to a neighbors’ property, a Party Wall Award is typically required. We can assess your project and advise on whether this is necessary. We work with party wall surveyors, to help guide you through the legal requirements, facilitate communication with neighbors, and work towards a prompt and amicable resolution.
When do I need to involve a structural engineer in my home project, and what is their role in the design process?
A structural engineer is typically required when your project involves changes to the building’s structure, such as adding or removing walls, altering load-bearing elements, or introducing new structural components. Their role is to ensure the safety and stability of the design, providing calculations and specifications for the construction team to follow. We usually work with structural engineer’s following a successful planning application, although on some larger or more complex projects, it’s beneficial having a structural engineer on board during the concept and design stage, before planning.
Can you handle the coordination with the structural engineer for my project?
Absolutely. We offer a service to collaborate closely with experienced structural engineers to ensure that the design meets all necessary structural requirements. We facilitate clear communication between the design team and the structural engineer, addressing any challenges that may arise during the planning and construction phases. Our goal is to streamline the coordination process and deliver a structurally sound and aesthetically pleasing final result for your home project.
What role do I play in the architectural process?
Your input is crucial to ensuring that the final design reflects your vision and requirements. We’ll collaborate closely with you, seeking your feedback at key stages of the design process. Your involvement helps us tailor the design to your preferences, address any concerns, and ultimately deliver a home that exceeds your expectations.
What is Permitted Development, and how does it apply to my project?
Permitted Development (PD) refers to certain types of construction and renovation work that can be carried out without the need for planning permission. In the UK, PD rights allow homeowners to make specific changes to their properties within defined limits and conditions. These might include extensions, loft conversions, or alterations, with certain restrictions such as on the height and depth of extensions. We carefully assess your project against PD guidelines to ensure compliance and guide you on maximising the potential of your project within the permitted parameters.
What is a Lawful Development Certificate for Permitted Development?
A Lawful Development Certificate (LDC) is an official document issued by the local planning authority that certifies a proposed or existing development on a property is lawful and falls within permitted development rights. This certificate serves as confirmation that the intended work complies with the relevant planning regulations without the need for planning permission. Applying for an LDC provides legal assurance and documentation for homeowners, assuring them that their proposed project aligns with the permitted development guidelines. This certificate can be valuable when selling the property or for future reference, providing evidence of the project’s legality and adherence to planning regulations. The LDC application process involves submitting detailed information about the project, including plans and evidence to demonstrate compliance with permitted development criteria. Our architectural team can guide you through the application process, ensuring all necessary documentation is provided and facilitating a smooth and successful application for a Lawful Development Certificate.
How much do loft conversions cost to construct?

Loft conversions can vary in cost depending on the complexity of the project and whether you wish to include dormers. As of 2025, according to checkatrade, the average cost of a 30m² loft conversion in the UK can range from £40,000 to £75,000+ depending on the type you choose and several other variables.

It’s important to consider the cost of upgrading the existing floor joists to support the additional load, the cost of relocating or adding a new staircase, and any drainage extensions needed. Additionally, you may need to include costs for upgrading insulation, structural works, or any new bathroom installations if required. For a detailed cost estimate throughout the design and build process, consider appointing a Quantity Surveyor (QS) or estimator to ensure a more thorough breakdown. Alternatively, Build It Cost Estimation offers great impartial cost breakdowns to help you plan your budget.

I have an idea for my home, but I'm not sure where to start. Can you help me?
We specialise in turning your ideas into reality. We’ll work closely with you to understand your vision, lifestyle, and budget, and then develop designs that meet your needs while adhering to regulations and practical considerations. From concept to construction, we’ll guide you through every step of the architectural process.
Can you help me find builders or contractors for my project?

Yes, we can recommend trusted builders or contractors we’ve worked with on similar projects. We offer a tender service to help you obtain competitive quotes and help you select the right contractor for your project. During the construction phase, we can also assist with coordination to ensure the design is implemented correctly and offer site visit services to monitor progress and address any queries. This comprehensive approach provides peace of mind and helps your project run smoothly from start to finish. We can help as much or as little as you wish. 

What value does an architect bring to a project?

An architect brings creative vision and practical expertise to your project, ensuring your ideas are translated into a functional, beautiful design tailored to your needs. We navigate the complexities of planning applications, building regulations, and construction, helping to avoid costly mistakes and maximise your investment.

 

For commercial clients, such as small-scale developers, we focus on unlocking the full potential of your site, balancing creativity with commercial viability to deliver designs that add value and appeal.

We understand that every project is unique and we approach each one with a tailored approach, so please get in if you have a project in mind.

How long does the architectural process take from design to completion, and what factors can affect the timeline?
Timelines vary depending on project size, complexity, and approvals. The architectural process involves several key stages, including initial consultations, site analysis, design development, obtaining planning permissions, technical design and preparing for construction. The timeline varies based on the project’s complexity, but on average, it can take anywhere from several months to over a year.
Can I make changes to the design during construction, and how does the architect handle modifications?
Yes, changes are possible, but they may impact the timeline and budget and may require planning updates or a new application. We would help you understand the implications of alterations, obtain necessary approvals, and work with the builder to implement changes smoothly. Communication is key to ensuring modifications align with your vision and are executed effectively.
What is biophilic design, and how can it be incorporated into my home project, regardless of its size or scope?
Biophilic design is an approach that seeks to connect people with nature through the integration of natural elements into the built environment. Regardless of the scale of your project, we are adept at incorporating biophilic principles. This can range from maximising natural light, introducing indoor plants, and utilising natural materials to creating spaces that evoke the sights, sounds, and textures of the outdoors. By seamlessly integrating nature into your home, we aim to enhance well-being, reduce stress, and create a harmonious living environment.
Can biophilic design be applied to both renovations and new builds, and how does it impact the overall aesthetics of a home?
Absolutely. Biophilic design is a versatile concept that can be applied to both renovations and new builds. Whether you’re transforming an existing space or starting from scratch, we tailor biophilic elements to suit your preferences and the unique characteristics of your home. The impact on aesthetics is profound – expect to see an infusion of natural textures, organic shapes, and a seamless connection between indoor and outdoor spaces. The result is a home that not only looks visually appealing but also fosters a sense of tranquillity and connection to the natural world.

We pride ourselves on offering a personal service through our full range of bespoke architectural and
design services. 

  • Location

    Kent

  • Email Us

    info@jncarchitecture.co.uk

  • Call Us

    07718 840689