Onion Flats

Q: What is Onion Flats's official website?

Onion Flats's official website is www.onionflats.com

Q: What is Onion Flats's Revenue?

Onion Flats's revenue is <$5 Million

Q: How many employees does Onion Flats have?

Onion Flats has 11-50 employees

Q: What industry does Onion Flats belong to?

Onion Flats is in the industry of: Architecture, Engineering & Design , Construction , Construction Management

Q: What is Onion Flats competition?

Onion Flats top competitors include: Auburn University Rural Studio , Becker + Becker , Watt Integration

Q: What technology does Onion Flats use?

Some of the popular technologies that Onion Flats uses are: PHP, NS1, Squarespace Online Stores, Unix

Q: How do I contact Onion Flats?

Onion Flats contact info: Phone number: (215) 783-5591 Website: www.onionflats.com

Q: What does Onion Flats do?

Onion Flats Architecture is an award-winning architecture firm based in Philadelphia, specializing in Net-Zero construction and Passive House design. With over 20 years of experience, they focus on mixed-use and high-density housing, emphasizing sustainability and community impact. Their services include innovative architectural design, sustainabil... ity consulting, and deep energy retrofits to enhance existing buildings. The firm is recognized for its commitment to energy efficiency and has received multiple awards for its contributions to sustainable urban living. Read More

Q: What are Onion Flats social media links?

Onion Flats Linkedin page Onion Flats Twitter page Onion Flats Facebook page

Q: Is Onion Flats a public company?

Onion Flats is private company therefore does not currently have an official ticker symbol

Architecture, Engineering & Design · Pennsylvania, United States · 11-50 Employees

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Overview

Headquarters

126 Market St, Philadelphia, Pennsylvani...

Phone Number

(215) 783-5591

Website

www.onionflats.com

Revenue

<$5 Million

Industry

Architecture, Engineering & Design

Construction

Construction Management

About Onion Flats

Onion Flats Architecture is an award-winning architecture firm based in Philadelphia, specializing in Net-Zero construction and Passive House design. With over 20 years of experience, they focus on mixed-use and high-density housing, emphasizing sustainability and community impact. Their services include innovative architectural design, sustainability consulting, and deep energy retrofits to enhance existing buildings. The firm is recognized for its commitment to energy efficiency and has received multiple awards for its contributions to sustainable urban living.Explore more

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SIC Code 87,871NAICS Code 54,541Show more

Onion Flats Org Chart

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Terence Buckley

Controller

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Ali Winot

Manager, Purchasing

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Number of Employees

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Onion Flats

<$5M

11-50

Private

<$5M

Terence BuckleyController

Watt Integration

<$5M

1-10

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2004

Kimberlee WattOperations Controller

Becker + Becker

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Kathy PrescottChief Financial Officer

Auburn University Rural S...

<$5M

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Natalie Butts-BallManager, Communications

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Onion Flats Tech Stack

A closer look at the technologies used by Onion Flats

PHP

NS1

Squarespace Online Stores

Squarespace

Unix

The Open Group

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Top Architecture, Engineering & Design Companies

Frequently Asked Questions Regarding Onion Flats

What is Onion Flats's official website?

Onion Flats's official website is www.onionflats.com

What is Onion Flats's Revenue?

Onion Flats's revenue is <$5 Million

What is Onion Flats's SIC code?

Onion Flats's SIC: 87,871

What is Onion Flats's NAICS code?

Onion Flats's NAICS: 54,541

How many employees does Onion Flats have?

Onion Flats has 11-50 employees

What industry does Onion Flats belong to?

Onion Flats is in the industry of: Architecture, Engineering & Design, Construction, Construction Management

What is Onion Flats competition?

Onion Flats top competitors include: Auburn University Rural Studio, Becker + Becker, Watt Integration

What technology does Onion Flats use?

Some of the popular technologies that Onion Flats uses are: PHP, NS1, Squarespace Online Stores, Unix

How do I contact Onion Flats?

Onion Flats contact info: Phone number: (215) 783-5591 Website: www.onionflats.com

What does Onion Flats do?

What are Onion Flats social media links?

Onion Flats Linkedin page Onion Flats Twitter page Onion Flats Facebook page

Is Onion Flats a public company?

Onion Flats is private company therefore does not currently have an official ticker symbol

See more information about Onion Flats

Onion Flats Latest Hires and Their Positions

Onion Flats is expanding and recently hired new employees. Here are the latest additions to the team.

Bob Jane

Plumber

Joined Jun 22, 2026

Phone

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