Margaret Ash Design is a cutting-edge interior design firm specializing in full-scale residential and commercial projects. For over 13 years we have been providing our clients with distinctive, bespoke interiors and are known for our hands-on, personalized client approach.  Our designs reflect diverse influences that are carefully curated. 




Principal & Owner

Before starting her own firm in San Francisco, Margaret Ash honed her skills and curated her unique style by designing for the some of the most influential interior designers and architects known to date: Kelly Wearstler, Amanda Nisbet, Elizabeth Bauer, Kendall Wilkinson, and Meyer Davis Studio. Her projects have been featured in various publications including Architectural Digest, Wall Street Journal, Sotheby's Home and many others. 


Design Director

Chelsi grew up in Toronto, Canada and studied at Ryerson University's School of Interior Design. Upon finishing her schooling, she moved to London where she worked as a color consultant for Farrow & Ball. In 2012 Chelsi moved to San Francisco, where she has had the opportunity to work for some of San Francisco's top interior design firms. Chelsi feels fortunate to be able to create spaces for people that serve as a framework for rich experiences She believes that the most important aspect of design is to constantly edit and never over-design.


Retail & Brand Director

Having worked in both LA and NYC Erin brings extensive experience in marketing strategy and partnerships to the MAD team. She has a passion and dedication for establishing and maintaining a brand's voice and developing multi-channel marketing that grows brand awareness and consumer involvement.  Whether it be managing our e-commerce, social media or marketing initiatives she ensures our MAD communication is clear and consistent. 


Chief  Financial Officer


Senior Designer

Sarah Oldaker joins the Margaret Ash team as an Atlanta native, studying Interior Design at The University of Georgia. She has built a foundation working for various high-end designers on the East Coast. She believes in the capability of beautiful spaces and is fueled by the joy they bring to the heart. This joy is central to Sarah's approach when working with clients and creating their ideal homes.



From payment application to invoicing  Charles makes sure our financial operations run smoothly. A great communicator he always ensures that clients feel like they are in good hands and this financial component is part of the personalized service we pride ourselves on. 

Jonathan Ash has thirteen years of infrastructure investment banking experience and serves in the capacity of Chief Financial Officer for MAD. Jonathan’s role is anchored by his abilities to provide technical and quantitative analyses and his charge is to ensure the continuation of efficient business operations as well as the development of strategic opportunities.


3236 Sacramento Street 

San Francisco CA 94115

+1 415 875 9607 

73 Hudson Street Floor 2

New York NY 10013

+1 415 875 9607