About.

➤ who we are

Manhattan Development is a licensed, Los Angeles based general contracting, real-estate development and design firm, offering residential and commercial construction development, design, project management, remodeling and tenant improvement services. Our acclaimed projects have ranged from designing, building and furnishing ultra-premium, high-end, multi-million-dollar estates in Bel Air, Holmby Hills, Beverly Hills and West Lake to large-scale commercial building projects across Southern California.

Our Story

Founded by Joshua Mamann, Manhattan Development has completed numerous projects that have been featured in Architectural Digest and other industry recognized publications. Our expertise in non-traditional construction includes tackling the most difficult of jobs, and exacting them to the most stringent of standards. We are laser-focused on delivering projects of exceptional quality, on schedule and within budget for our highly valued Clients.

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Our Reach

Over the past 25 years, our family business has earned a reputation for delivering one-of-a-kind luxury residences and commercial builds of the highest quality. Consistently exceeding expectations, we have completed hundreds of high-end homes, commercial buildings, retail spaces and interior build-outs from Southern California to San Fransisco.

Our Values

At Manhattan Development, we are committed to embracing full transparency, creating genuine relationships, and providing unparalleled quality and beauty. We take tremendous pride in what we do, and value the importance of delivering projects that our clients can be tremendously proud of for generations to come.

“With every project, it’s our name and our reputation that’s on the line.
For us, it’s not just business… it’s entirely personal.”
– Joshua Mamann, Principal and Founder