O'Neil Langan Architects

O'Neil Langan Architects O'Neil Langan Architects is a New York based architecture firm that specializes in international ret

O'Neil Langan Architects was established in 1996 combining the expertise of partners Steven O’Neil and Mary Langan. The two architects share a commitment to creative design as well as a dedication to providing professional service. With a rapidly growing practice of young designers and architects, the team delivers consistent service to clients, exciting design solutions, and meticulous detailing.

Since its inception the firm has expanded to more than 50 employees in Manhattan, with projects all over the world. OLA’s portfolio is rich and diversified, but always seeks to bring a fresh approach to design problems. We specialize in high end retail projects, but also work with lower budgets and emerging brands. We are committed to the challenge of designing creatively and offering professional service no matter what the scope of a project. We provide a range of services to our clients with a staff of architects, interior designers and cad drafters. Our current offerings include: Architectural services, Interior Design services, Project Management, Retail Design, Fixture Design, Image/Identity Design, Visual Merchandising, Graphic Design, In-Store Promotion and Packaging Design. Our prior experience includes work in Retail, Retail Complex Planning, Editing Studios, Corporate Interiors, Hospitality, Healthcare, Showrooms, Residential, Space Planning and Commercial Lobbies. Our mission is to establish long term relationships based on our proven performance and creativity. The partners are involved in every project, working closely with clients and consultants. The leadership of the partners demonstrates to our staff the goals of dedicated professionalism, accuracy and effective project management.

Located at the base of the iconic MetLife Building on E. 45th St., Giulietta is more than just a casual Italian restaura...
02/12/2026

Located at the base of the iconic MetLife Building on E. 45th St., Giulietta is more than just a casual Italian restaurant — it’s a dining destination.
Step inside and the pressures of Midtown fade, replaced by the warmth and charm of an Italian piazza.
Reducing sound from busy Park Avenue was one of the primary challenges we were eager to take on. By integrating acoustic treatment panels into the ceiling construction, we minimized vibrations from vehicular traffic overhead and created intimate, comfortable dining rooms that still take advantage of views toward Vanderbilt Avenue.
Layered finishes, thoughtful detailing, and a beautifully executed interior make this space truly special.

Proud to have helped bring Giulietta to life.



We’ve had the pleasure of designing a number of Faherty’s locations, and their latest store at The Arcade in Nashville b...
08/25/2025

We’ve had the pleasure of designing a number of Faherty’s locations, and their latest store at The Arcade in Nashville brings their easygoing, Music City–inspired spirit to life 🌊✨ Every detail was crafted to create a welcoming, laid-back atmosphere where visitors can feel right at home.



Building BAO BAO ISSEY MIYAKE’s first U.S. flagship—and only standalone store outside of Asia—was a special one for the ...
06/19/2025

Building BAO BAO ISSEY MIYAKE’s first U.S. flagship—and only standalone store outside of Asia—was a special one for the OLA team.

The design centers around a glowing ceiling light, inspired by the Japanese irori, a place where people gather and connect. It’s both sculptural and symbolic, drawing visitors in and anchoring the space with warmth.

Every detail supports the brand’s global vision, creating a space that feels thoughtful, intentional, and uniquely BAO BAO.

We’re proud to share that OLA is a 2025 Interior NYCxDESIGN Awards finalist in the Showroom category with our Hunter Dou...
05/16/2025

We’re proud to share that OLA is a 2025 Interior NYCxDESIGN Awards finalist in the Showroom category with our Hunter Douglas project in Manhattan.

Honored to be recognized for a space that blends professional clarity with residential warmth—designed to invite visitors to slow down and truly engage with the products on display.



OLA collaborated with Fireclay to shape their new Santa Monica showroom, a space that highlights the craftsmanship and v...
03/17/2025

OLA collaborated with Fireclay to shape their new Santa Monica showroom, a space that highlights the craftsmanship and versatility of their handmade tiles.

Visiting their California factory gave us a firsthand look at the entire process—from raw clay to vibrant, custom designs, all made in the U.S.

The showroom even features a speakeasy-style bar area, inspired by local Spanish architecture and brought to life with intricate tile installations.

📍Santa Monica, LA



Building strong connections with our teams is just as important as building great spaces! Recently, the  team hosted us ...
02/04/2025

Building strong connections with our teams is just as important as building great spaces! Recently, the team hosted us in their office, and we got to bond over a little friendly competition—a ping-pong tournament! 🏓

It was a great way to see their space, spend time together, and strengthen our partnership beyond the job site. Huge thanks to them for being such great hosts and creating a fun, welcoming atmosphere! Plus, OLA took home the win—hoping this inspires a rematch and maybe even an annual tradition. 😉

Working with Glossier is always a joy, and this latest collaboration at their NorthPark Center boutique is no exception....
01/15/2025

Working with Glossier is always a joy, and this latest collaboration at their NorthPark Center boutique is no exception. The atelier concept is reflected in the millwork design and merchandising display, with paint tube-inspired products showcased like you’d find in an art supply shop. The merchandise is arranged to echo the layout of an artist’s workshop, inviting customers to play and explore. This all contributes to the fun and unique experience that Glossier brings to each store.

📍Dallas, TX



A space that reflects the essence of David Yurman. Their signature luxurious finishes and timeless elegance are consiste...
12/19/2024

A space that reflects the essence of David Yurman. Their signature luxurious finishes and timeless elegance are consistent across all stores, creating a cohesive and elevated brand experience. We’re proud to have played a role in shaping this beautiful space.

📍Columbus, OH



Fireclay’s New York showroom is a perfect example of clean and thoughtful design, allowing their products to truly stand...
12/12/2024

Fireclay’s New York showroom is a perfect example of clean and thoughtful design, allowing their products to truly stand out. The space feels organized and inviting, creating an atmosphere that’s both functional and beautiful.

It’s always a pleasure collaborating with Fireclay, and we’re proud to bring their vision to another location!

📍Manhattan, NY




Glossier’s Las Vegas location captures the playful, vibrant energy of the city while staying true to the brand’s signatu...
12/09/2024

Glossier’s Las Vegas location captures the playful, vibrant energy of the city while staying true to the brand’s signature clean aesthetic and thoughtful use of color.
We love collaborating with to bring their creative visions to life in such dynamic settings!

📍Las Vegas, NV

A fresh new space has arrived in Williamsburg! 🥗✨This modern  restaurant features clean lines and a minimalist aesthetic...
11/04/2024

A fresh new space has arrived in Williamsburg! 🥗✨
This modern restaurant features clean lines and a minimalist aesthetic, with a playful twist—an eye-catching disco ball that adds a dynamic element to the sleek, contemporary design. The blend of vibrant energy and refined details creates a unique spot where community and style come together.

📍Greenpoint, NY

Address

15 West 37th Street 15th Floor
New York, NY
10018

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12122792670

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