Mustard House Design
Southwark | London
Hampshire | Berkshire

Interior Designers

We take the time to understand your personality and desires to transform your room, home or commercial space into considered, inspiring and enviable interior design solutions.

The results of our craft are homes that are tailored and timeless. We are here to create a one-of-a-kind portrait of who you are, how you live, and what you love.
You can choose from our Bespoke Design Consultation service or fixed price Design My Room styling package to start your design journey with us.

Please subscribe for regular blog updates, free seasonal design guides and exclusive subscriber offers.

Call us on 07883 271297 and ask us any questions, alternatively, send us an email.

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Modern Kitchen

At Mustard House Design, we offer tailormade interior design services from our bases in south London and Hampshire, to give you an individual and bespoke service.


With the huge variation in interior design styles, we know just how important getting to know you is, so we’ll work with you to understand your tastes, personality and what you are seeking to achieve and make sure you have the right package for your project.


Our aim is to give you a space that you can be proud of to relax in, socialise, and entertain guests.

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We offer a range of services aimed at providing you with choice. From our “Inspire Me” pack, for those who just need that initial creative spark, to our full Bespoke Interior Design service.


We can work on every room in your house, from lounges to bedrooms and bathrooms to kitchens – there’s no limit to the positive impact that the designers at Mustard House Design can have on your home environment. With just a few simple touches and an expert’s eye, our team of professionals can turn your dream into a reality.

Please choose from our Bespoke Design consultation service or fixed price Design My Room styling package to start your design journey with us. Clcik on the link below to see how this works and examples of each package.


You may also be interested in our new range of home products in our shop which will launching soon. We will be adding to this in the coming weeks and months, so please subscribe for regular updates, free seasonal design guides and exclusive subscriber offers.

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As well as interior design services, we work across London providing design management and implementation, including overseeing the construction and completion of your project.


We will get the most out of the space you have available, tailored to your exact specifications. Our design and implementation services give you complete control over your own home, allowing you to reimagine the space in a way that you might not have thought possible.


With our many years of interior design management experience, we can provide the ultimate turn key service working with the most appropriate contractors from the South East.

Contact our team based in Southwark, central London to find out more about how we can help you with all of your design solutions. We’ll work with you during a briefing and consultation phase to understand you and your personality before translating that into a final result just for you.


We treat each project as unique and individual, so make sure to contact Mustard House Design for your next project.

07883 271297


Meet The Team


Simon Tong

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Fiona Delo

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Tomioka Minoru



Interior design consultation for

larger fee based work

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Single fixed price on-line

room styling | design

Design my Room



Exclusive Mustard House crafted

interior prodcuts

Coming Soon

 for our product updates, free seasonal design guides and exclusive subscirber offers.

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About Us

Simon, Tomi and Fiona have known and worked with each other for over 11 years.

Our new website intends to give you a cost-effective and straightforward broad spectrum of design services from simple styling guides for your downstairs loo through to full-scale house extensions and new build services through our Bespoke Interior Design in Southwark.

Our years of design and management experience allow us to provide a full turnkey design package from concept to completion.


Please subscribe to be kept informed of what’s coming next.


Call us on, 07883 271297 and ask us any questions you may have.

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