Swoon Architecture- Home extensions, loft and garage conversions
swoon architecture happy family
swoon architecture logo

Plan and build your dream home with the UK’s leading home extension, loft conversion, and garage conversion experts

Head office: 

Unit 1, The Hub,          3 Drove Road Newhaven BN9 0AD

Brighton Office:  

2 Upper Bevendean Farm, Race Hill, Brighton BN2 6AF 

Croydon office:

13 Imperial Way Croydon CR0 4RR 

London Office:  

38 Fairlop Rd, Leytonstone,LondonE11 1BN 

Award-Winning Architectural Design and Structural Engineering

Whether it’s your first project or you’re a renovation pro, we will treat your home building project as if it were our own.

You and your family deserve the perfect home.

A place to rest, unwind, feel safe and inspired. And as your needs change, your property should evolve, too. 

Swoon Architecture specialise in home extensions, loft conversions, and garage conversions.

Our in-house team support you with everything you need to transform your property, from surveys and planning to building and aftercare.

We take great pride in our work, and we are masters of our craft.

We are Build Architecture Awards 2021 “Best Home Extension Design Specialist”

Take the first step. Make your dream home a reality.

Reach out today for our expert guidance.

How Swoon Architecture Can Help You

Rest assured that your project is in good hands.

97% of our projects are completed on time and within budget, which is 50% higher than the UK average. Our experts control every element of your build and demand perfection every step of the way.

Not sure where to start?

This popular tool with help you to collect your ideas and understand how planning and budgeting works. Get all the information you need before you meet with an expert. Click here to download the Swoon Architecture Project Planning Pack.

Interested, but not ready to commit?

Let Swoon Architecture evaluate your project, talk you through what to expect, and provide a written plan. Whether it’s used by us or another architect; this document will save you time and money. Discover our Needs and Options Design Review today.

Home Improvement Planning and Building Services

When you trust Swoon Architecture to support work on your home, you get decades of knowledge and unparalled expertise. We help guide you in three areas: home extensions, loft conversions, and garage conversions. That laser focus is why we are the best in our field, and why Swoon Architecture is the leading company in the UK.

loft conversion tinified waybridge

Loft conversions

Dreaming of a home cinema?

Want to create a magical master bedroom?

How about a gaming den, office, or gym?

Turn your unused space into your new favourite room of the house with a Swoon Architecture loft conversion. Work with our skilled loft conversion architects to make your fantasy a tangible reality.

home extension swoon architecture outside

Home extensions

When your family outgrows your home, extending can be the ideal solution.

Whether you want to build up or out, Swoon Architecture is proud to offer the best house extension design services.

From kitchens to bathrooms and everything in between, you can rely on our architects for quality home extension planning and building.

swoon architecture garage conversion

Garage conversions

Converting your garage is one of the fastest and most popular ways to create more space and add value to your home.

But, without the right considerations, a garage conversion can turn into a costly mistake.

Let our experienced team handle the design, planning, and building, and relax safe in the knowledge that you’re working with the best.

Our Projects

Here are some of the most recent home extensions, loft conversions, and garage conversions by Swoon Architecture.

Client Testimonials

Don’t just take our word for it! 

Hear what some of our valued clients have to say about their experience with Swoon Architecture.

The Best Home Extension Design in South East England

swoon architecture award

Swoon Architecture are very proud to announce that we have been awarded Best Home Extension Design Specialist South East England at the Build Architecture Awards 2021.

The whole team at Swoon Architecture are very proud of this achievement. We will continue to design the most innovative home extensions for UK homeowners.

Home improvements don’t need to be a headache. You know you’ll get total peace of mind when you work with the best. With us by your side, your dream property is in reach.

Plan and build your perfect home extension, loft conversion, or garage conversion with the UK leader in the field. Begin your journey by clicking the button below.

Swoon Architecture Blog

Get inspired by reading some of our recent blog articles.

Why should I choose Swoon Architecture?

We are not your average UK architectural design firm! Swoon Architecture have something special and are devoted to helping you realise your vision. 

Everything you need under one roof

We manage the whole process, from start to finish, including all structural engineering and calculations made in-house.

We are made up of some of the best Architectural Designers, Structural Engineers, Planning experts and Project Managers you can find. 

Ongoing support

We understand that sometimes designs can change—for example, due to cost, or a shortage of materials.

This is why we offer ongoing support via telephone or even site visits. You are important to us and we will do all that we can to help you achieve your property goals. 


Our team is made up of the leaders in their respective fields, with decades of experience under their belts and extensive specialist knowledge.

Projects like garage conversions or loft conversions run the risk of failure without expert planning, as do home extensions. 


We are the authority on home extensions, garage conversions, and loft conversions, because that is all that we do and we have got the art down to a perfection.

Our talented team of structural engineers received an award for “Best Structural Engineering Solutions” for two years in a row.


Communication is a cornerstone of the Swoon Architecture unique approach. We appreciate that it can be daunting to knock down and re-build part of your home! 

You can trust us to always treat you with respect, professionalism, and provide friendly and transparent communication throughout the process. 


Excellent design runs through the veins of every one of the Swoon Architecture team.

A love of the work and a drive for perfection is one of the reasons why we were awarded Best Home Extension Design Specialist South East England.


At Swoon Architecture, every property that we work on is special. We are totally committed to you and your unique needs, and will treat your project as if it were our own home. 

This level of dedication means we get the best results, every time. It doesn’t matter if it’s a large house extension, a complex loft conversion, or a quick-turnaround garage conversion, we deliver flawless execution every time. 

Frequently Asked Questions

Want to know more? Find the answers to some of the most commonly asked questions when it comes to architectural design and home improvement

Why would I need to use an architectural design company?

If you are considering any home improvement project then it’s wise to speak with Swoon Architecture.

Planning and preparation are key for any successful build, and an architectural designer provides comprehensive sketchings, drawings, plans, and models. This gives you, and any other contractors involved, a clear direction of where you’re headed and what to expect. 

Ultimately, when you use an architectural design company, you know that your project will be completed more economically and more efficiently. 

I’ve got a project in mind, but I’m not sure it will work. Can you help?

Our professional advice is available for a limited number of individuals upon application. Please reach out to us if you would like to arrange a 30 minute feasibility call with Swoon Architecture’s leading expert, Ashley Renton. 

Please note you should have plans to build or renovate within the next 12 months and be a resident of East or West Sussex, Croydon, Crawley, or East London. 

Can I see some of your previous projects?

Absolutely. We have completed many successful projects. Take a look atour portfolio which includes a garage conversion that raised the property’s value by 10%, a beautiful mediterranean style house extension in East Sussex, luxury loft conversions, and much more.

How do I get started? What is the Swoon Architecture process?

Home improvement can seem intimidating, so we make the process as straightforward and stress-free as possible for you. 

Whether you’re planning a loft conversion, a garage conversion, or a house extension, Swoon Architecture is ready and waiting for your enquiry.

  1. Phone call: we will have a chat about you want from your home extension, of loft/garage conversion. We can then explain how Swoon Architecture can help you 
  2. Needs and Options Review: this is an optional stage, but extremely valuable in the long run. We visit your site and run a comprehensive evaluation to build a written plan. 
  3. Meeting and survey: one of our team will meet you, take a survey, and discuss the extension or conversion project
  4. Planning drawings and permissions: we design and create planning drawings according to the discussions so far. Once any changes have been made, the plans are submitted
  5. Structural: Once planning has been approved, structural calculations are made in-house by our expert structural engineers and work on your loft conversion, your garage conversion, or your house extension can begin!