Plumbob Information

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Architecture

Website	http://www.onionflats.com
Revenue	$4 million
Employees	14 (3 on RocketReach)
Address	111 W Norris St, Philadelphia, Pennsylvania 19122, US
Phone	+1 215-426-6466
Fax	(815) 301-3431
Industry	Design, Architecture, Engineering & Design, Construction
Web Rank	8 Million
Keywords	Facade Design, Architecture Design, Building Design, Architectural Services, Design Firm, Construction Drawings, Structural Design, Master Planning, Urban Design, Architectural Drafting, Building Plans, Space Planning, Interior Architecture, Sustainable Design, Landscape Architecture, Parametric Design, Architectural Visualization, Building Information Modeling, Computer Aided Design, Architectural Model Making
Competitors	Habitat for Humanity International, Treehouse Software, Urban Design Associates \| UDA, The Sustainable Design Group, ECO LOGICAL BUILDERS, Synergy Designer Homes, Affordable Housing Solutions, Craftsman Builders, Dream Homes Design, Renewable Energy Design +5 more (view full list)
SIC	SIC Code 87 Companies, SIC Code 871 Companies
NAICS	NAICS Code 5413 Companies, NAICS Code 541 Companies, NAICS Code 54131 Companies, NAICS Code 54 Companies

Plumbob Questions

What is the annual revenue of Plumbob?

The Plumbob annual revenue was $4 million in 2026.

Who is the Owner of Plumbob?

Howard Steinberg is the Owner of Plumbob.

How many people are employed at Plumbob?

3 people are employed at Plumbob.

Where is Plumbob based?

Plumbob is based in Philadelphia, Pennsylvania.

What is the NAICS code for Plumbob?

The NAICS codes for Plumbob are [5413, 541, 54131, 54].

What is the SIC code for Plumbob?

The SIC codes for Plumbob are [87, 871].

Top Plumbob Employees

Howard Steinberg

Owner at Plumbob

Philadelphia, PA, US
1
- onionflats.com

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