Architecture & Interior Design

for Property Developers

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

We are your partner in creating spaces that perform.

We design boutique developments and hotels that sell, rent, and book faster.
Our expertise in interior architecture and design not only maximises space and elevates valuations, but also transforms every property into a place buyers, tenants, and guests fall in love with.

Modern open-concept living room and kitchen with large windows, white furniture, natural wood accents, and a green plant

We work with developers, investors, and hoteliers who want to stand out and make profit.

Whether you are converting a townhouse into flats, building a small apartment scheme, or working on your next boutique hotel project, our interiors are designed to help you sell and rent faster, attract premium buyers, tenants, and guests, increase occupancy and nightly rates, and uplift your project’s GDV.

With 20 years of experience in hospitality, 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 developers and investors at every stage from pre-planning feasibility to turn-key styling.
Here are just some of the ways we can support your next scheme:

A black and brown paint roller with a handle, viewed from the side.

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

Line graph with a fluctuating trend over time, featuring three data points.

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

Simple line drawing of a building with multiple windows and an arched entrance.

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

Outline of a bed with a headboard and a pillow on a black background.

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

Illustration of a keycard or digital access card.

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

Our Clients Want More From Their Developments

With a background in hospitality, 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 achieve 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.”