Thornton Summer Design
Thornton Summer Design is a Chicago-based, founder-led interior design firm delivering full-service residential interior architecture, custom furniture design, and bespoke furnishings to high-net-worth clients across North America, Mexico, and the Caribbean, with founder involvement on every engagement.
- Company typePrivate
- Founded2007
- HeadquartersChicago, United States
- Headcount11–50
- GTM typeB2C
- OfferingServices
What Thornton Summer Design does
Thornton Summer Design is a Chicago-based, full-service interior design firm founded in 2007 by Summer Thornton and Josh Thornton. The studio delivers residential interior design, interior architecture, and custom furniture design for high-net-worth clients, with founder Summer Thornton personally involved on every project. The firm operates with a lean team of approximately 20 designers and support staff and serves clients across North America, Mexico, and the Caribbean, with active engagements in Chicago, Miami, Charleston, New York, Los Angeles, Aspen, and international locales including the Bahamas and Sayulita.
The business model is built around bespoke, project-based retainers on engagements that typically span two to five years. Revenue is generated primarily through design fees on residential projects, supplemented by a recent extension into hospitality via the Casa Rosada vacation rental launched in 2024 in Sayulita, Mexico. The firm is privately held, bootstrapped, and founder-owned, with no external funding rounds disclosed. Third-party validation includes placement on the ELLE Decor A-List, AD100, 1stDibs 50, and Sotheby's '20 to Watch, alongside the Rizzoli-published monograph 'Wonderland' (2022), which became a bestseller and reinforces the firm's brand equity in the luxury residential segment.
Thornton Summer Design firmographics
Firmographics- Name
- Thornton Summer Design
- Legal name
- Summer Thornton Design, Inc
- Website
- https://summerthorntondesign.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Thornton Summer Design is a Chicago-based, founder-led interior design firm delivering full-service residential interior architecture, custom furniture design, and bespoke furnishings to high-net-worth clients across North America, Mexico, and the Caribbean, with founder involvement on every engagement.
- Ownership category
- akta.pro rank
Thornton Summer Design industry classification
Industry- Product category
- Interior Design Services
- NAICS
- Interior Design Services (541410), Interior Design Services (54141)
- SIC
- Hotels & Motels (7011)
- akta.pro primary industry
- Luxury Whole-Home Renovation (High-End Finishes & Custom Build) (HSAPAEAI)
- akta.pro secondary industry
- Design-Led Boutique Hotels (THAGADAA)
Keywords
Where Thornton Summer Design is headquartered
LocationHeadquarters
- HQ city
- Chicago
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Thornton Summer Design business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Infrastructure, Others
Revenue model
- Interior Design Services: Full-service interior design for residential projects. Design fees are tailored to each project depending on size, scope, level of customization, and timeline. The firm provides white glove service, overseeing the full design process from concept through completion.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based pricing tailored to each client |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
Thornton Summer Design product offering
Product offeringCore offering
Summer Thornton Design is a full-service residential interior design studio that creates bold, colorful, and deeply personalized interiors for high-net-worth homeowners. The firm delivers end-to-end design services spanning architectural detailing, custom millwork and cabinetry, custom furniture design, furniture and textile selection, antiques sourcing, art curation, and final accessorizing and styling. The studio also operates Casa Rosada, a luxury oceanfront vacation rental in Sayulita, Mexico, and published the book Wonderland: Adventures in Decorating (Rizzoli, 2022).
Product overview
Thornton Summer Design is an interior design services firm offering a comprehensive suite of design services centered around creating bold, colorful, and beautifully layered interiors. The company operates three core service offerings: full-house interior design services (covering furnishings, textiles, antiques sourcing, art curation, and styling), architectural design services (acting as design architect with technical drawings for millwork and interior architecture), and custom furniture design and sourcing. The portfolio includes completed projects across North America, Mexico, and the Caribbean. The firm also operates Casa Rosada, a luxury vacation rental property in Sayulita, Mexico that serves as a hospitality extension of the design brand. Additionally, founder Summer Thornton published 'Wonderland: Adventures in Decorating' (Rizzoli, 2022), a book documenting the firm's design philosophy and completed projects.
Differentiator
Problem solved
Functional benefit
Products and services
- Interior Design Services Full-service interior design for residential properties, providing end-to-end design solutions including architectural detailing, custom millwork and cabinetry, custom furniture design, furniture and textile selection, antiques sourcing, art curation, accessorizing, and styling for high-net-worth homeowners.
- Architectural Design Services Design architect services leading all creative direction and architectural design work, producing extensive technical drawings for interior architecture, millwork, and architectural details. Partners with the local Architect of Record for permitting and local code compliance.
- Custom Furniture & Furnishings Custom furniture and furnishings sourcing and design. Pieces are made to fit the space exactly, elevating the interior while reflecting the personality of the homeowner.
- Casa Rosada Vacation Rental A luxury 6,000 sq ft oceanfront vacation rental villa in Sayulita, Mexico, featuring five bedrooms with en-suites, a private heated infinity pool, hot tub, and concierge team. Combines the service of a top-tier resort with the privacy of a home.
- Wonderland: Adventures in Decorating A published book by Summer Thornton released through Rizzoli in 2022 that showcases her most daring, romantic, and joyfully over-the-top spaces. It has become an Amazon bestseller and remains in its fifth printing.
Quantifiable outcome
- Projects featured in Architectural Digest's AD100 issue
- +1 more outcomes
Companies that use Thornton Summer Design
Customer profileNamed customers5 records
Segments2 records
Ideal customer profiles2 records
Thornton Summer Design technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Thornton Summer Design partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- Sutro ArchitectscoreCollaborated on the Jewelbox on the Bay project - a 1912 Tudor Revival in San Francisco. Sutro Architects provided architectural services while Summer Thornton Design handled interior design.
- Enrique Garcia ArchitectscoreProvided architecture services for Casa Rosada, the five-bedroom oceanfront villa in Sayulita, Mexico.
- Heidi Lightner ArchitectscoreProvided architectural services for the New Old House project in Chicago suburbs - a new build honoring classical design principles.
- Joan CraigminorProvided architecture services for the Seductive Co-Op project in Chicago's Gold Coast.
- Local Architects of RecordcorePartner with local architects (AOR) for permitting, structural engineering, and local code compliance on projects nationwide.
- South Loop LoftminorCollaborating with Beth and Molly from South Loop Loft for Meadow House project sourcing.
Scale indicators4 records
Recent moves7 records
Expansion highlights4 records
Thornton Summer Design competitors and assessment
Company assessmentDirect peers
- Mary McDonald: Mary McDonald is an A-List interior designer with a portfolio of luxury residential projects comparable in scope, scale, and client profile to Summer Thornton. Both firms operate principal-led practices serving affluent residential clients nationally.
- Jonathan Adler: Jonathan Adler is a maximalist designer with a strong personal brand, retail product line, and bold colorful aesthetic that overlaps with Summer Thornton's design philosophy. Comparable in aesthetic positioning and brand-led business model, though more product-retail oriented.
- Ken Fulk: Ken Fulk operates a similarly structured luxury design firm with an A-List reputation, signature maximalist aesthetic, and a portfolio spanning high-end residential, hospitality (hotels, restaurants), and branded experiences—overlapping directly with Summer Thornton's residential and Casa Rosada hospitality work.
- Suzanne Kasler: Suzanne Kasler is an A-List Atlanta-based luxury residential designer with a similarly comprehensive service offering including custom furnishings and antiques sourcing. Comparable boutique scale and high-net-worth client base.
- Bunny Williams Inc. Bunny Williams runs an established luxury interior design firm with a similar principal-led model, comprehensive services including custom furniture and antiques, and a roster of high-net-worth residential clients. Comparable in service breadth and clientele tier.
- Kelly Wearstler: Kelly Wearstler is an internationally recognized A-List interior designer with a maximalist, color-forward aesthetic closely mirroring Summer Thornton's. Both firms serve ultra-high-net-worth residential clients with bold, distinctive designs and have expanded into hospitality and product lines.
- Martyn Lawrence Bullard Design: Martyn Lawrence Bullard is a long-established A-List designer serving celebrity and luxury residential clients with eclectic, layered interiors globally. His firm is highly comparable in scale, clientele, and design philosophy to Summer Thornton Design.
- Nate Berkus Associates: Nate Berkus is an A-List interior designer with national residential projects, strong media brand (TV shows, product lines), and a similar principal-led firm structure. Comparable in client tier and brand-driven go-to-market approach.
- Pamela Shamshiri: Pamela Shamshiri is an A-List interior designer with a maximalist, color-saturated aesthetic and a luxury residential and hospitality portfolio. Direct peer in aesthetic approach, clientele, and recent industry recognition trajectory.
Broad incumbents
- Peter Marino Architect: Peter Marino Architect is a much larger, established luxury design practice spanning high-end residential, retail flagship (Chanel, Dior, Louis Vuitton), and hospitality. Comparable in clientele tier and architectural interior design scope, but operates at significantly larger scale with broader portfolio.
Market position
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights7 records
Customer concentration
Thornton Summer Design social profiles
Digital presenceThornton Summer Design financial estimates
Financial estimateRevenue estimate
Valuation estimate
Thornton Summer Design leadership team
Management profileNumber of profiles
Profiles3 records
Thornton Summer Design funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Thornton Summer Design M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Thornton Summer Design
What does Thornton Summer Design do?
Summer Thornton Design is a full-service residential interior design studio that creates bold, colorful, and deeply personalized interiors for high-net-worth homeowners. The firm delivers end-to-end design services spanning architectural detailing, custom millwork and cabinetry, custom furniture design, furniture and textile selection, antiques sourcing, art curation, and final accessorizing and styling. The studio also operates Casa Rosada, a luxury oceanfront vacation rental in Sayulita, Mexico, and published the book Wonderland: Adventures in Decorating (Rizzoli, 2022).
Is Thornton Summer Design a public or private company?
Thornton Summer Design is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Thornton Summer Design founded?
Thornton Summer Design was founded in 2007. It employs 11 to 50 people.
Where is Thornton Summer Design based?
Thornton Summer Design is headquartered in Chicago, United States, in the North America region.
How does Thornton Summer Design make money?
One revenue line is on record: interior Design Services.
Who are Thornton Summer Design's main competitors?
Direct peers on record are Mary McDonald, Jonathan Adler, Ken Fulk, Suzanne Kasler, Bunny Williams Inc., Kelly Wearstler, Martyn Lawrence Bullard Design, Nate Berkus Associates and Pamela Shamshiri. Peter Marino Architect is listed as a broad incumbent.
Does Thornton Summer Design have an API?
No public API is recorded for Thornton Summer Design.
What industry is Thornton Summer Design in?
Thornton Summer Design's product category is Interior Design Services. Its primary akta.pro industry code is HSAPAEAI, Luxury Whole-Home Renovation (High-End Finishes & Custom Build), with a secondary code of THAGADAA, Design-Led Boutique Hotels. Its NAICS code is 541410 and its SIC code is 7011.