Company lists · Data refreshed November 2026

Top 25 Spatial design agencies based in Seattle, United States

Name: Spatial design agencies based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 205 companies tracked

RevenueBase identified 205 company matches for spatial design agencies associated with Seattle, United States as of November 2026 and tracks 1,481 professional contacts across them, including 729 with verified work emails. Across the United States, New York is the largest hub for this category (1,162 companies); Seattle has 205.

This list covers company matches for spatial design agencies associated with Seattle, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

205Companies

1,481Contacts tracked

729Verified emails

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The 25 largest spatial design agencies based in Seattle, United States

Ranked by team size

Top 25 of 205 company matches for spatial design agencies based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Mahlum	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	105 contacts →
	Exact match “As a community of practice, Mahlum makes places that promote healing, wellness, learning and more.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Porter	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	63 contacts →
	Exact match “Porter creates places where people want to be.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Collinswoerman	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	61 contacts →
	Exact match “We believe that great design drives extraordinary value.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Burgess Design, INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	48 contacts →
	Exact match “At Burgess Design, our team of designers and architects can help you create a space that makes a statement about who you are as a company while improving efficiencies and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Insidesource Seattle	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	44 contacts →
	Exact match “We are interiors integrators.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Board & Vellum	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	39 contacts →
	Exact match “Board & Vellum is a multidisciplinary design firm based on Capitol Hill in Seattle, offering architecture, interior design, and landscape architecture for residential, commercial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Graphite Design Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	37 contacts →
	Exact match “Graphite Design Group is a Seattle-based design firm recognized for crafting people-focused integrated environments that elegantly solve complex problems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Graham Baba Architects	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	35 contacts →
	Exact match “Graham Baba Architects is a vibrant pacific northwest architecture firm recognized for their successful place-making of commercial, residential, civic and community-oriented…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Hoedemaker Pfeiffer	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	35 contacts →
	Exact match “Hoedemaker Pfeiffer is a design studio focused on the creation of space that reveals the human spirit and connects us to the world in which we live.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Dawson Design Associates, INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	20 contacts →
	Exact match “What we do and how we work is distinctly DDA; a leveraging of artistic ingenuity and business acumen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Atelier Drome	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	18 contacts →
	Exact match “We are a 100% woman-owned, full-service, multi-disciplinary design firm that unites exceptional design with down-to-earth approachability, specializing in architecture, interior…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Susan Marinello	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	18 contacts →
	Exact match “Led by the firm’s namesake, Susan Marinello is a multi-disciplinary interior design practice where in addition to style and sophistication, the signature element is how occupants…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Lucas Interior	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	18 contacts →
	Exact match “Lucas is an award-winning design studio focused on custom interiors that honor and elevate the art of everyday life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Schemata Workshop	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	18 contacts →
	Exact match “Schemata Workshop provides full architecture and urban design services on new and renovation projects from concept through construction.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Design Well Spent Company	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Mission To make the world a better place – one design at a time.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Graffix INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Graffix is a world-class source for design, production, and fulfillment of environmental graphics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	House Of Sorcery	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “House of Sorcery is a shape-shifting design studio.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Cast Architecture	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	16 contacts →
	Exact match “CAST architecture is a Seattle-based firm with extensive experience designing contemporary spaces throughout the Northwest.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Degen & Degen Architecture And Interior Design	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	15 contacts →
	Exact match “Since 1994, Degen & Degen has designed distinctive environments for the hospitality industry across North America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Mwworks	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	14 contacts →
	Exact match “mwworks llc is a Seattle based design studio offering architectural and interior design services to residential and commercial clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	NB Design Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	13 contacts →
	Exact match “Responsive to our clients’ vision, NB Design Group is a Seattle based interior design firm committed to design that expresses the interrelationships between architecture and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Silk Cavassa Marchetti	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	12 contacts →
	Exact match “Silk Cavassa Marchetti is a Seattle based architecture practice focused on creating memorable places that inspire and enrich the soul.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Studio SC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	12 contacts →
	Exact match “Located in the heart of the Pioneer Square district of Seattle, Studio SC is a collective of graphic designers led by Mark Sanders and Billy Chen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	The Design Collective, INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	11 contacts →
	Exact match “the design COLLECTIVE was founded on the simple belief that no single person is responsible for the success of a project.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Shugart Wasse Workshop Architecture And Interiors	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	11 contacts →
	Exact match “Shugart Wasse Workshop is an award winning firm specializing in full service architectural and interior design.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “spatial design agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 205 spatial design agencies based in Seattle, United States

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Spatial design agencies based in Seattle, United States at a glance

As of Nov 6, 2026

49.2%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

160

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 205 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Seattle, United States whose business descriptions match “spatial design agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 729 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Spatial design agencies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “spatial design agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many spatial design agencies are there based in Seattle, United States?

RevenueBase identified 205 company matches for spatial design agencies associated with Seattle, United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Mahlum tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most spatial design agencies?

New York leads the United States with 1,162 company records, followed by Los Angeles (523) and Chicago (353). Seattle has 205.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 729 professional contacts with verified work emails tracked across these 205 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.