Note (September 2026): This list has been corrected. Revenue and staff projections in the original version for Studio O+A, Havenly, Ashleys Interiors, Interior Define and Decorilla could not be traced to any public source, Havenly no longer charges $79 per room, and Interior Define is a furniture brand rather than a design firm.
The top interior design companies in the USA include large multi-disciplinary firms such as Gensler (San Francisco), Perkins&Will (Chicago), Jacobs and AECOM (both Dallas) and DLR Group (Omaha), plus specialist studios such as Studio O+A, Meyer Davis, HBA and Marmol Radziner. For a single home room, online services such as Havenly and Decorilla offer flat-fee design.
Key Takeaways
- Gensler, founded in 1965 and headquartered in San Francisco, is described by Wikipedia as the world’s largest architecture firm by revenue and number of architects.
- The biggest US firms (Gensler, Perkins&Will, Jacobs, AECOM, DLR Group) mainly design offices, hospitals, schools and public buildings, not individual homes.
- Boutique studios such as Meyer Davis (New York) and Marmol Radziner (Los Angeles) focus on hospitality and high-end residential work.
- Online services cost far less: as of September 2026, Havenly lists $199 per project online and Decorilla lists single-room packages from $599.
- Before hiring, check the portfolio, the fee structure in writing and, where your state requires it, the designer’s license or NCIDQ certification.
Do you want to renovate your house or place of business? Or perhaps you’re planning a redesign and require expert assistance. Whatever the situation, there are many interior design firms available that can assist you in creating the space of your dreams.
Interior Design Companies In USA – List of Top Interior Design Companies In USA
Interior design firms across the United States offer a wide range of services, from full-service architecture and interiors for offices, hotels and hospitals to flat-fee online design for a single room. There are many options available when it comes to interior design, from traditional to modern, minimalistic to rustic, eclectic to classic, or even custom-made ideas.
Top Interior Design Companies in the USA
| Rank | Company | Headquarters |
|---|---|---|
| 1 | Gensler | San Francisco, CA |
| 2 | Perkins & Will | Chicago, IL |
| 3 | Jacobs (Jacobs Solutions Inc., formerly Jacobs Engineering) | Dallas, TX |
| 4 | AECOM | Dallas, TX |
| 5 | Interior Architects (IA) | Multiple Offices (USA) |
| 6 | DLR Group | Omaha, NE |
| 7 | Studio O+A | San Francisco, CA |
| 8 | Meyer Davis | New York, NY |
| 9 | HBA (Hirsch Bedner Associates) | Santa Monica, CA |
| 10 | Marmol Radziner | Los Angeles, CA |
Disclaimer: The order above is an editorial selection based on publicly available information as of September 2026, not an audited ranking; Gensler, the first entry, is described by Wikipedia as the largest architecture firm in the world by revenue and number of architects. Company prominence may vary depending on niche, region, and project type. For the latest updates, visit the official websites of each firm.
The profiles below cover a second, separate group of US interior design businesses, from boutique studios to online design services. They are not the same ten firms as the table above, and details that could not be independently verified are flagged in each profile.
Taylor Interiors
Located in the center of downtown Seattle, Taylor Interiors is a full-service interior design company run by a family. According to the original version of this article, Taylor Interiors was established in 2012 and works with both corporate and residential clients; Justwebworld could not independently verify these details, so confirm them directly with the firm before hiring. The business is renowned for its meticulous attention to detail and inventive ideas.
Each project is created with the utmost skill and attention, resulting in distinctive environments that capture the personalities of each client. Taylor Interiors uses a skilled group of craftsmen, designers, and installers from concept to execution to guarantee that every project is nothing less than flawless.
Studio O+A
Studio O+A has made a name for itself as one of the top interior design firms in the country for more than three decades. Studio O+A was co-founded in San Francisco by Primo Orpilla, whose work at the studio dates to 1991, and it is best known for workplace interiors for technology companies such as Facebook, Microsoft, Uber and Yelp. A figure of 200 million USD in projected annual revenue for 2022, quoted in an earlier version of this article, could not be traced to any public source and should not be relied on.
Studio O+A is an interior design company with offices in San Francisco that provides unique and imaginative interior space solutions. The studio’s team includes architects and interior designers; headcount figures vary by source and are not independently verified here. Studio O+A is known for colorful, brand-driven office interiors designed around how employees actually work.
SDG Architecture
SDG Architecture is described in the original version of this article as a Seattle, Washington-based architecture firm; the details below (founding date, founder and specialties) could not be independently verified, so check them directly before hiring. The business, which was established in 2018, offers clients searching for contemporary and sustainable design services spanning from design consultancy to construction management.
Stephen Dominguez, the firm’s founder and chief architect, is motivated by the concepts of biophilic design, a movement that aims to incorporate natural aspects into structures and their surroundings. SDG specializes in green architecture, which places an emphasis on energy effectiveness, sustainability, and innovative design approaches.
SDG specializes in designing distinctive living spaces for single-family houses as well as multi-family buildings. Their designs put a premium on convenience, quality of life, and a sense of place.
Havenly
Havenly, an online interior design service co-founded by Lee Mayer and Emily Motayed, launched in the mid-2010s (this article originally said 2013; Built In lists 2014) and has become one of the best-known virtual design services in the US. Havenly is headquartered in Denver, Colorado, and as of September 2026 its website lists sister brands including Interior Define, The Citizenry, Burrow, The Inside and St. Frank; a figure of more than $24 million in 2022 sales, quoted in an earlier version of this article, could not be verified. Customers who want to refurbish their homes can choose from a variety of interior design services provided by Havenly, including furniture selection, decorating guidance, wall art suggestions, and much more. The company stands out because each client is given a dedicated interior designer with years of experience who can help them design the home of their dreams.
Havenly’s pricing has changed since this article was first written: as of September 2026, its pricing page lists an Online Full package at $199 and an In-Person package at $699, priced per project rather than per room, with promotional discounts offered at times.
Studio Gild
Studio Gild is described in the original version of this article as a multi-disciplinary creative studio in San Francisco, California. The description below reads like the studio’s own marketing copy and covers branding and digital design rather than interior design, so readers looking for an interior designer should confirm the firm’s services and location directly. Studio Gild, which was established in 2017, focuses on branding, illustration, UX/UI, web design, and animation. The studio says its team is focused on producing memorable visual experiences. It says it works closely with clients throughout each project.
The studio describes its team as professionals from several design disciplines. Its stated aim is to produce designs that engage people and tell stories. Its stated goal is to create digital experiences through creative work.
The Ashleys Interiors
The original version of this article described Ashleys Interiors as an interior design firm operating since 2003; that date and the other company details below could not be independently verified. The firm’s own marketing credits its growth to a wide range of design services. An earlier version of this article credited Ashleys Interiors with a staff of more than 60; that figure is unverified.
It provides specialist services such as house staging for real estate agents, reupholstering and refurbishing, as well as custom-tailored solutions, to fit certain demands. A claimed 2022 revenue of over $20 million could not be traced to any public source and should not be relied on. Customers may depend on The Ashleys Interiors to create unique interior designs with perfect attention to detail and knowledge of a variety of aesthetics.
Home by JSD Design
The original text in this section describes a single home project attributed to JSD Design rather than the company itself; the firm’s current services and location could not be independently verified, so treat the description below as an example of the kind of residential project such studios take on. This contemporary home, which is centrally located in the city, has an open-concept design and lots of windows through which comes sufficient natural light.
High-end appliances are included in the kitchen, which also has a large island for cooking and entertaining. While the bedroom offers a peaceful setting for relaxation, the living area is cozy and has comfy seats. The outside landscape is kept up, and there is a deck with a pool that is ideal for sunbathing.
Large closets, a laundry room, and a stunning terrace with views of the city skyline are among the home’s features.
Interior Define
Interior Define is a Chicago-based direct-to-consumer furniture brand rather than an interior design firm. The original version of this article credited Rob Royer as its founder and gave a 2011 launch date; Built In lists a 2014 founding date, and as of September 2026 Havenly’s website lists Interior Define among its family of brands. An $18 million revenue projection for 2022, quoted in an earlier version of this article, could not be verified. The talented designers and artisans at Interior Define put forth an endless effort to create stunning furniture items that seamlessly blend traditional techniques with cutting-edge design.
Headcount estimates vary by source (Built In lists about 85 employees), and the company is known for customizable sofas, beds, chairs and dining pieces; the original article highlighted its Reese Sofa. Customers of Interior Define can effortlessly customize their things to meet their style without the hassles of leaving homes, thanks to the company’s individualized service and practical online platform. Interior Define’s commitment to providing top-notch customer service makes it understandable why they are one of the leading companies in the US.
Nikki Chu Interior Design
Nikki Chu Interior Design is the studio of designer Nikki Chu. The original version of this article placed it in New York City; its current location and services could not be independently verified for this update, so confirm them directly. Designer Nikki Chu established the business in 2010, and it focuses on high-end residential and hospitality projects globally.
The business is renowned for its cutting-edge designs that capture the essence of each client’s distinctive vision. Nikki and her staff are dedicated to making spaces that are very practical, classically stylish, and intensely personal.
The business focuses on designing areas that not only look stunning but also convey a sense of warmth, comfort, and relaxation.
Decorilla
Decorilla is an online interior design platform that matches clients with professional designers; as of September 2026 its website lists more than 300 designers and local designer availability in more than 40 US cities. The original version of this article gave a 2013 founding date and a New York headquarters, which could not be independently confirmed. An earlier version of this article attributed a $12 million sales forecast to research from “ABC Consulting”; no such report could be found, so the figure should not be relied on. As of September 2026, Decorilla’s list prices for single-room design packages start at $599 (Bronze), with Silver and Gold tiers, Platinum services and hourly design available for larger projects. The business has completed several projects for clients around the country, ranging from modest apartments to huge corporate buildings.
Decorilla can continue to bring cutting-edge concepts and trends to reality while giving homeowners a gorgeous interior space that fits their budget and lifestyle thanks to their knowledge and collab with other leading professionals.
How Do the Largest US Interior Design Firms Compare?
The largest US interior design firms are multi-disciplinary practices that combine architecture, engineering and interiors. The table below lists verified basics for the firms in the ranking above whose details could be confirmed from public sources as of September 2026.
| Firm | Headquarters | Founded | Best known for |
|---|---|---|---|
| Gensler | San Francisco, CA | 1965 | Workplace, retail and mixed-use design; about 6,000 staff in 57 locations (2025, per Wikipedia) |
| Perkins&Will | Chicago, IL | 1935 | Education, healthcare and workplace design; part of the Dar Group, now a subsidiary of Sidara |
| Jacobs (Jacobs Solutions Inc.) | Dallas, TX | 1947 | Engineering and infrastructure, with interiors as part of wider building projects |
| AECOM | Dallas, TX | 1990 | Infrastructure consulting; moved its headquarters from Los Angeles to Dallas in 2021 |
| DLR Group | Omaha, NE | 1966 | Employee-owned integrated design firm for civic, education, justice, sports and workplace projects |
| Meyer Davis | New York, NY | Not confirmed | Residential, hospitality, retail and workplace interiors |
| Marmol Radziner | Los Angeles, CA | 1989 | Design-build residential work and restoration of modernist homes |
| Studio O+A | San Francisco, CA | Early 1990s | Workplace interiors for technology companies |
Revenue and headcount figures change every year, so treat any number quoted by a directory or listicle as a snapshot rather than a ranking.
Large Firm, Boutique Studio or Online Service: Which Do You Need?
The right type of interior design company depends mainly on the size and type of project. A hospital, headquarters office or hotel needs a firm with architects and engineers on staff, while a living room refresh can be handled online.
| Type | Examples | Typical projects | How fees work |
|---|---|---|---|
| Large multi-disciplinary firm | Gensler, Perkins&Will, AECOM, DLR Group | Offices, hospitals, schools, airports, public buildings | Negotiated contracts, usually quoted per project |
| Boutique or luxury studio | Meyer Davis, Marmol Radziner, Studio O+A | Hotels, restaurants, high-end homes, branded workplaces | Custom proposals: flat fee, hourly or a percentage of project cost |
| Online design service | Havenly, Decorilla | One room or a few rooms in a home | Published packages: Havenly $199 online or $699 in person per project; Decorilla from $599 per room (list prices, September 2026) |
| Furniture brand with design help | Interior Define | Custom sofas, beds and dining furniture | You pay for the furniture you buy |
How to Choose an Interior Design Company
Choosing an interior design company comes down to matching the firm’s experience to the project, then checking credentials, fees and contract terms in writing.
- Define the scope and budget first. Decide which rooms are involved, whether walls or plumbing will move, and how much you can spend. The guide on why home interior design planning matters walks through this stage.
- Review portfolios for similar projects. A firm that designs hospitals may not be the best fit for a small apartment, and the reverse is also true.
- Check credentials. According to the US Bureau of Labor Statistics, some states restrict the title “interior designer” to licensed professionals, and licensing usually requires a degree, work experience and a qualifying exam. The NCIDQ certification from the Council for Interior Design Qualification is the most widely recognized US credential.
- Use professional directories. The American Society of Interior Designers (ASID) runs Design Finder, a directory that connects clients with interior design professionals.
- Get the fee structure in writing. Designers may charge a flat fee, an hourly rate, a percentage of project cost or a markup on furniture. Ask which one applies and what counts as a revision.
- Ask for references and a written contract. The contract should list deliverables, timeline, payment schedule, who orders furniture and who handles returns or damage.
How Much Does an Interior Designer Cost in the USA?
Interior designer costs in the USA range from a few hundred dollars for an online room design to custom-quoted fees for full-service projects. As of September 2026, Havenly lists $199 for its Online Full package and $699 for In-Person design, per project, and Decorilla lists single-room packages at $599 (Bronze), $859 (Silver) and $1,099 (Gold), with occasional discounts. Full-service firms rarely publish prices because fees depend on scope, location and finish level, so always request a written estimate.
Working within a tight budget is still possible: the guide to interior designing with limited budgets covers where to save and where to spend, and the article on factors to consider when renovating your home helps set priorities before you contact a designer.
What Does the US Interior Design Profession Look Like?
The US interior design profession employed about 97,100 people in 2025, according to the Bureau of Labor Statistics (BLS) Occupational Outlook Handbook. The BLS reports a 2025 median annual wage of $67,190 and projects employment growth of 3 percent from 2025 to 2035, about as fast as the average for all occupations.
Most interior designers hold a bachelor’s degree, and their work covers space planning, lighting, materials and color. Readers new to the field can start with the core elements of interior design and the role of color psychology in interior design.
For offices and shops, the furniture decisions often matter as much as the design concept; see the guide on choosing the right commercial furniture for your business.
Frequently Asked Questions
What is the largest interior design company in the USA?
Gensler is the largest. Wikipedia describes the San Francisco-based firm as the largest architecture firm in the world by revenue and number of architects, with about $1.88 billion in 2024 revenue and roughly 6,000 employees in 2025.
Is Havenly or Decorilla cheaper?
Havenly is usually cheaper for a single project. As of September 2026, Havenly lists $199 for its Online Full package per project, while Decorilla’s single-room packages start at $599 at list price. Both run promotions, so check current prices before booking.
Do interior designers need a license in the USA?
It depends on the state. The Bureau of Labor Statistics notes that some states allow only licensed professionals to use the title “interior designer,” while others let both licensed and unlicensed designers work in the field.
Is Interior Define an interior design firm?
No. Interior Define is a Chicago-based direct-to-consumer furniture brand that sells customizable sofas, beds, chairs and dining pieces, and Havenly’s website lists it among Havenly’s family of brands.
How do I find a qualified interior designer near me?
Start with the American Society of Interior Designers’ Design Finder directory, check whether candidates hold NCIDQ certification or a state license, and compare portfolios of projects similar to yours.
