Architecture & Interior Design

for Property Developers

At Mar Design, we are more than just a design studio:

We Design Boutique Developments That Sell and Rent Faster.

Our expertise in interior architecture and design maximises space, boosts sale and rental prices, and creates homes that buyers and tenants fall in love with.

We work with boutique residential developers who want to stand out in a competitive market.

Whether you are converting a townhouse into flats or building a small apartment scheme, our interiors are designed to help you sell faster, attract premium buyers, and increase your project’s GDV.

With nearly 20 years of experience in prime and super-prime design, we bring creativity, precision, and a strong commercial mindset to every development.

BOOK YOUR FREE INTRO CALL

WHAT WE DO: DESIGN THAT DELIVERS RETURNS

We support residential developers at every stage from pre-planning feasibility to turn-key styling.
Here are just some of the ways we can support your next scheme:

Optimised layouts that improve flow, maximise value, and make every unit feel more spacious and sellable. We provide full design development sets - drawings, finishes, and specs - ready for planning, build, and handover.

INTERIOR ARCHITECTURE & SPACE PLANNING

Turn-key interiors that elevate appeal, boost valuations, and speed up sales or rentals, whether it’s a show flat, HMO, or full development.

DESIGN & STYLING

We assist with interior-led input for planning applications, building control packages, and construction-ready documentation that ensures smoother approvals and buildability.

PLANNING SUPPORT & TECHNICAL DESIGN

From concept boards and FF&E to finish palettes and moodboards, we create cohesive interior schemes that are aspirational, cost-effective, and ready for delivery across multiple units

DESIGN CONCEPT & FINISHES PACKAGES

MARKETING-READY VISUALS & PRESENTATION

We collaborate with your team to deliver beautifully styled spaces and visuals that elevate your sales brochure, enhance viewings, and help potential buyers fall in love with the space.

Is Your Scheme Struggling to Stand Out?

Many boutique developers face the same challenges:

COMPACT UNITS THAT FEEL AWKWARD OR UNDERSIZED

BUYERS OR TENANTS WHO DON’T CONNECT WITH THE SPACE

DELAYS IN SALES AND RENTALS COSTING THOUSANDS IN INTEREST AND MARKETING

DEVELOPMENTS UNDERVALUED DESPITE BUILD QUALITY

GENERIC INTERIORS THAT FAIL TO REFLECT THE LIFESTYLE THAT BUYERS AND TENANTS ACTUALLY WANT

We solve this by designing spaces that look incredible and perform commercially: interiors that are lifestyle-driven, layout-optimised, and marketing-ready from day one.

Want to see how we can help you?

BOOK YOUR FREE INTRO CALL

Trusted by Developers Who Want More From Their Developments

With a background in prime residential and over 50 homes delivered across the UK, our interiors don’t just look good, they work hard to deliver results:

Award-finalist studio (the British Institute of Interior Design - BIID Awards, HMO Awards, London Construction Awards)
Projects featured in industry publications
Clients include boutique developers working on 5–20 unit schemes in London, the North West and South East
While most developers aim for a 15% return, our clients consistently achieve 20 - 30% by using design strategically to increase market appeal, speed up sales, and increase higher valuations

book your discovery call here

What people say.

“Raquel isn’t just an interior designer, she’s someone you can fully trust to take your vision and bring it to life at a level you didn’t think was possible.

I recently project-managed our latest 8-bed HMO, with Mar Design taking care of the interiors. From the initial brief to receiving the technical drawings and staging the property, the whole process has been an absolute pleasure! We kept in constant communication to ensure we delivered the perfect result, and working alongside Raquel has been an absolute joy.

Thanks to Raquel’s design work, we’re now achieving a higher-end valuation on the property than we originally planned, and that’s all down to her incredible interior design. It’s been a great experience from start to finish, and I’m looking forward to our next project together.”

GARETH TAYLOR-SMITH, TAYLORSMITH PROPERTY

“Thanks to Raquel, she's amazing at her craft. Brings great ideas and has a great architectural background which helps us to utilise space even further beyond the architect's submission, before we look at design options which I must commend Raquel on her design, attention to detail and ideas brought to the table for my projects. To many more!”

OLA OLAJIDE, MILLENNEAL PROPERTY UK

“As an interior designer, Raquel has an incredible eye for detail and was able to transform my 7-bed HMO into a beautiful, stylish and functional space that exceeded all of my expectations.

The end result was a space that was not only stunning but also comfortable and inviting, and my tenants have been absolutely delighted with the transformation.

I have no doubt that Raquel’s expertise and creativity have added significant value to my property, and I would not hesitate to work with her again in the future.”