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A Home Owner’s Dream:
Only a few steps between you and your dream property.
Why wait?

30 House Types - each comes with a wide variety of already designed:

Back Extensions
Side Extensions
Wrap Around Extensions
Loft Extensions
Porch Extensions

Various styles of extensions to suit whatever need you may have for your project!

Welcome to PDE (Pre Designed Extensions) – where we make it easier than ever for you to take the first steps towards your dream home. We know that planning a home extension can feel overwhelming, especially with the belief that you can only have two out of three things: affordability, quality, or speed. But we’re here to change that.

At PDE, we provide expertly crafted pre-designed extension plans that save you time, money, and stress. Whether you're looking to create more space for your family or add value to your property, our streamlined process allows you to secure planning permission or a permitted development certificate in as little as 24 hours after placing your order. Even with custom changes, we’ll have your plans ready within 48 to 72 hours – a far cry from the weeks or months you might otherwise wait.

With our extensive catalogue of designs tailored to Semi-Detached and Terrace homes, you’ll find options that suit your style and needs. Our plans are not just affordable – they’re designed to rival the quality you’d expect from high-cost architects, ensuring you don’t have to compromise on your vision.

Getting started with PDE is simple. Browse our designs, choose the one that fits your project, and let us handle the rest. We’ll guide you through the process to make sure everything is seamless, so you can focus on the excitement of bringing your ideas to life.

 

Your perfect extension is closer than you think – and at PDE, we’re here to help you get there faster, for less, and without compromise. Let’s make your dream home a reality.

Select your style of housing

Take a closer look at what we offer! Below, you’ll find the catalogues for our Terrace and Semi Detached properties. Pick which one represents the property you are looking for and explore our full range of House Types. Each house style comes with a complete range of extension designs. Explore detailed plans, elevations, and immersive 3D views for every design, giving you the full picture of what's possible.

Terrace

Semi Detached

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The process made simple

See how our streamlined process gets you from concept to completion with ease

Select your style of Housing
(Terrace or Semi Detached)

Select your houses Design Type
(Terrace ranges 1-17 and Semi Detached ranges 1-13)

Pick from the various Design Options what you would like done to your property
(Categories consist of Back, Side, Wrap Around, Loft and Porch Extensions)

Add the design to your cart, stating the size of the extension you require and if you would like any internal or external changes made
(In the store section locate the House Type and design or click Add to Cart in the Catalogue Page under your chosen design)

Purchase the desired drawings 

Your amended drawings will be emailed to you within 24-72 hours ready for you to apply for planning permission or for a permitted development certificate

Additionally an Online Consultation is available if you have any questions or you can get in contact via the Contact Us section below or Email 

Fixed pricing to suit all

We believe in a fair and transparent pricing model - always know what you'll pay. No hidden costs.

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Side Extension
£1000

Back Extension
£1000

Loft Extension
£1000

Wrap Around Extension
£1500

Porch Extension
£600

Additional Options:

Garden Outbuilding - £750
3D Visuals - £300 per image
Planning Application Submission - £150
3D Revit Model - £250

DWG Files - £75

Designed with you in mind

Practical, personalised, and professional services for every homeowner

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Home Owners

Our services are designed to offer an easy, affordable and stress-free path to realizing your renovation dreams. We take pride in our highly competitive pricing and unwavering commitment to transparency in all aspects of our service.

Designing your dream home does not have to be a long, scary and complicated process and our affordability enables you to allocate more of your budget towards the actual construction and finishing stages, ensuring that your dream home takes shape exactly as it has been envisioned.

Start your journey with us where you're already 50% of the way to the finish line.

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Home Sellers

One of the simplest yet most effective ways to boost your property's value is by selling it with approved planning permission. This strategic move allows you to unlock the full potential of your property without the need for any construction having to take place.

Research indicates that having approved planning permission alone can increase your property's value by approximately 10%. Showcasing these approved plans to potential buyers enables them to visualise the possibilities and how they can enhance their new home right after purchase, without the typical delays and costs associated with obtaining planning permission.

We recommend speaking with your local real estate agents to gain a more precise understanding of by how much having approved planning permission can significantly elevate the market value of your property.

  • Why should you pick PDE to design your project?
    There are three key reasons: Transparency: We prioritise transparency in our service. Before making a purchase, you will have a clear understanding of what you will receive, as you can view all drawings beforehand and the associated costs for them. This means you can proceed with confidence, free from concerns about unexpected invoices or delays. Efficiency: Our ability to deliver high-quality drawings within 24 to 72 hours sets us apart. This efficiency enables you to initiate the process of applying for planning permission or a permitted development certificate much sooner than if you were to choose anyone else. Time equates to money, and the longer a project drags on, the greater the financial impact. While you cannot control the duration of the council's decision-making process, you can control how quickly you initiate your application. With our service, you can obtain the keys to a property on a Monday and submit an application to the council by Tuesday—an unprecedented level of speed in the industry. Cost-Effectiveness: Our pricing structure is significantly more affordable than what you would typically pay an architect, who typically charges around 7% of your construction cost. For example, if your project budget is £70,000, an architect's fee would amount to £4,900, which is significantly more than what we charge, even for our full packages with all additional extras.
  • How does PDE know the dimensions of your property?
    We do not provide measurement services as part of our offerings. For planning there are only a few dimensions required. For all the height needs to be stated and, If you are having a back extension, how far from the rear external wall it extends ie. 4m. If you are having a side extension, how wide it is from the side external wall ie. 2m. If you are having a wrap around extension, how far from the rear external wall it extends, and how wide it is from the side external wall. If you are having a loft extension, how wide it is ie. 3m and how close it is to the edges of the roof ie. 200mm Dimensions of your existing property are not relevant and no dimensions are shown on the submitted drawings but those mentioned above.
  • How does PDE consistently achieve and maintain impressive project timelines without compromising quality?
    Our ability to deliver on tight schedules while upholding quality standards is rooted in our extensive catalogue of pre-designed architectural drawings, specifically tailored for various Terraced and Semi Detached houses in the UK, available in an array of style options. Within this collection, you will find an extensive selection of rear, side, wrap-around, and loft extensions, with some also offering porch extension options. Leveraging the prevalence of similar or nearly identical housing designs across the UK, we can efficiently repurpose and adapt existing drawings, swiftly accommodating your specific requirements, however if you can’t find a match for your property, please reach out. Our approach involves a meticulous examination of every detail, resulting in various styles suited to everyone's taste that are also functional, and fully compliant plans that adhere to all relevant regulations. However, given the unique regulatory nuances of different local councils, occasional minor adjustments may be necessary in the later stages of the process.
  • What are the next steps upon receiving the drawings?
    After you have received the drawings, the following steps are typically undertaken: Planning Permission or Permitted Development Certificate: Depending on the scope of your project, you will need to apply online for planning permission or a permitted development certificate. We offer a service to assist with these applications for a fee of £250 per application, in addition to the application fees themselves. Alternatively, you have the option to submit the applications independently. It's worth noting that in some cases, it may be advisable to submit separate applications for various aspects of the project (e.g., one for the back extension and another for the side extension). This approach can help mitigate potential delays if issues arise with one of the applications, allowing you to commence work on one aspect while awaiting approval for others. Additionally, you have a three-year window from the date of approval to commence construction. Therefore, submitting separate applications can provide flexibility if you are unable to undertake all the work at once within that timeframe. Engaging a Builder and Structural Engineer: Once your drawings are approved, and you have obtained the necessary permissions to proceed with your project, the next steps involve hiring a builder and a structural engineer. Please note that our involvement extends only to the planning stage, and our drawings are intended for planning purposes, not construction. A structural engineer or another architect will provide the builder with detailed construction specifications, and they will need to take their own measurements for precise calculations. DWG Files and Revit Model: We offer the option to purchase the DWG files and the Revit model of the project at an additional cost. These files can expedite and economize the transition to the construction phase. However, it is essential to emphasize that these files are intended for planning purposes and must be carefully reviewed for any construction-related issues." Please note that the information provided here is a general guideline, and specific requirements may vary based on your unique project and local regulations.
  • Is consultation available to discuss design and project goals?
    Certainly, we highly recommend scheduling an online consultation before making a purchase. This consultation provides an opportunity for you to address any inquiries and share your ideas, ensuring a clear understanding of your project's objectives.

Contact us

Need assistance?
Get in touch, and we'll ensure your project runs seamlessly from start to finish.

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