If you’ve found yourself Googling ‘custom conservatories’ Plymouth, it’s likely that you’ve been made aware of the thermally efficient benefits, low maintenance materials and versatility that come with modern day extensions.
However, despite the plethora of perks, it’s easy to be put off by the assumption that such a home improvement will be stressful or challenging due to the inevitable paperwork and challenges brought about by planning permission.
Although the good news is that most conservatories fall under permitted development, meaning you usually won’t need a full planning application. There are limits on size and height, but most installations fall well below these.
In this guide, we’ll explain everything you need to know about planning permission and permitted development for custom conservatories in Plymouth, giving you peace of mind as you plan your dream conservatory.

Planning permission rules for custom conservatories in Plymouth and beyond: What you need to know
In the South West, conservatories are generally considered small home extensions. Under permitted development rights, most homeowners can add a single-storey conservatory without applying for formal planning permission, provided certain conditions are met. These include:
- Single-storey only: Conservatories are treated like a small extension, not a separate dwelling.
- Size limits
- Detached homes: up to 4 m from the original rear wall
- Semi-detached or terraced homes: up to 3 m
- Must not cover more than 50% of your garden area, including other outbuildings
- Height limits
- Maximum height: 4 m overall
- If within 2 m of a boundary: eaves no higher than 3 m
- Highest part no taller than your existing roof ridge
- Location restrictions: Cannot be forward of the principal elevation or a road-facing wall
Even if your conservatory meets these conditions, it’s still worth checking with your local council to confirm your permitted development rights are intact. In some cases, councils have removed these rights via an Article 4 Direction, especially in older towns or conservation areas. If you’re unsure, we can check this for you.

When planning permission is required for conservatories in the Plymouth area
Certain situations mean you’ll need planning permission for a custom conservatory:
- Protected areas: Conservation Areas, National Parks, and Areas of Outstanding Natural Beauty (AONB) have stricter rules. Many parts of Devon fall under these protections, such as Dartmoor or Exmoor.
- Listed buildings: Any changes to a listed property usually require listed building consent.
- Exceeding size or height limits: Extending beyond the standard permitted development limits requires permission.
- Prior approval: For larger conservatories, councils can assess neighbour impact through a simplified notification process.
- Permitted development rights removed: Your council may have restricted these rights in your area.
Even if planning permission isn’t required, building regulations still apply, covering energy efficiency, insulation, ventilation, and structural safety. For added certainty, you can apply for a Lawful Development Certificate, especially useful if you plan to sell your home later. Party wall agreements may also be necessary if your conservatory shares walls or is close to neighbouring properties.
What are the benefits of a new conservatory?
Adding a custom conservatory to your home offers far more than extra space. Benefits include:
- A stylish new home extension that blends with traditional properties or modern homes
- Increased living space for dining, relaxing, or entertaining
- Maximised natural light with glass roofs or roof lanterns
- Improved energy efficiency and insulation, helping lower your carbon footprint
- Personalised range of styles, colours, and finishes to suit your home
- Options for fold doors or slim sightlines to create a seamless indoor-outdoor connection
- Increased comfort of your home all year round, including with solid roofs or warm roofs

Conservatories in Plymouth and the surrounding areas: DNA Window Solutions
At DNA Window Solutions, we specialise in custom conservatories South West homeowners love. Whether you prefer a classic Victorian conservatory, an Edwardian conservatory, or a contemporary orangery, we offer a range of products crafted from premium materials like uPVC and aluminium.
Our team can guide you through the entire process, from a free survey to expert conservatory installation, ensuring minimal disruption and a great job every time. You can choose from solid roofs, glass roofs, or roof lanterns, all designed for energy efficiency and long-term durability.
Colours and finishes, including Chartwell Green and other bespoke options, allow you to match your home’s aesthetic, while our expert team helps with tricky access issues or custom designs. With DNA Window Solutions, you get first-class customer service, peace of mind, and a dream conservatory tailored to your lifestyle.

FAQs
Do I always need planning permission for a conservatory in Plymouth?
Most single-storey conservatories that meet permitted development conditions don’t need planning permission. Protected areas, listed buildings, or larger builds may require a formal application.
Can I improve energy efficiency with a new conservatory?
Yes. Double or triple glazing, insulated roofs, and modern materials reduce heat loss, lower energy bills, and improve the comfort of your home year-round.
Who are DNA Window Solutions?
Founded by brothers Adam and David, DNA Window Solutions is a Plymouth-based, family-run business dedicated to high-quality windows, doors, and conservatories for homeowners across Devon and Cornwall. Our expert team combines years of experience, premium materials, and excellent customer service to deliver bespoke solutions tailored to modern homes and traditional properties alike.
From free surveys and expert advice, to full conservatory installation and aftercare, we ensure every project is a first-class experience. Contact us today to start your journey: 01752 938120, sales@dnawindowsolutions.co.uk, or visit us at Unit 92, Christian Mill Business Park, Plymouth, PL6 5DS.
Main takeaways
- Most custom conservatories South West homeowners want fall under permitted development rules.
- Size, height, and location limits determine whether planning permission is needed.
- Protected areas, listed buildings, or larger builds require council approval.
- Building regulations always apply, covering safety, insulation, and energy efficiency.
- DNA Window Solutions offers bespoke conservatories, expert advice, and first-class installation for Devon and Cornwall homeowners.

