What Heju Studio does

Heju Studio is a Paris-based architecture and interior design practice founded in 2015 by Hélène Pinaud and Julien Schwartzmann, state-certified architects who graduated as majors of their class from the École Nationale Supérieure d'Architecture de Strasbourg. The studio specializes in complete renovations of residential apartments (typically 50–170 m² in the Paris region) and selective boutique/retail interior design (e.g., Poudre Organic), built around a self-described 'Poetic Minimalism' aesthetic that fuses Japanese and Scandinavian influences through minimalist volumes, natural materials, and sensitivity to spatial flow. The studio is not a software or technology company; its core 'technology' is design methodology and end-to-end project execution from concept through delivery, including custom furniture and built-in solutions.

The studio monetizes primarily through professional services fees on individual renovation and decoration projects, quoted on a project basis by scope, surface area, and complexity, with no publicly disclosed pricing. Ancillary revenue surfaces include brand collaborations (Nobodinoz sculptural furniture, Intervalles / La Lune artisanal collection), a published book ('Design It Yourself', 2019), and DIY content and workshop partnerships with brands such as Farrow & Ball, Leroy Merlin, Urban Outfitters, Etsy, Galeries Lafayette, and BHV. Client acquisition is direct-to-consumer via the website contact form, supported by an unusually extensive content-marketing engine: an active DIY/tutorial blog, Instagram (@hejustudio), Pinterest (@hejublog), and recurring editorial features in French and international design publications (IDEAT, Elle Décoration, AD Collector, Vogue Living, Living Etc, Remodelista, Design Anthology, Nytt Rom).

The practice operates as a sub-10-person team (founders plus current collaborators Constance Mine and Gabrielle Léger), is privately held with no external investment, has no parent company or subsidiaries, and serves the Paris / Île-de-France / France market. There is no AI/ML, no software product, and no disclosed revenue or funding; growth signals are primarily incremental capacity additions, ongoing media coverage, and selective brand collaborations rather than geographic or vertical scaling.

Name

Heju Studio

Legal name

Heju

Website

https://heju.fr

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

Heju Studio is a Paris-based architecture and interior design practice founded in 2015 by Hélène Pinaud and Julien Schwartzmann, specializing in residential apartment renovations and selective boutique retail design with a Japanese-Scandinavian minimalist aesthetic, serving private homeowners and small commercial clients in the Paris region.

Ownership category

akta.pro rank

Product category

Interior Architecture & Residential Renovation Services

NAICS

Interior Design Services (541410), Architectural Services (541310), Residential Building Construction (23611)

SIC

Construction - Special Trade Contractors (1700)

akta.pro primary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

akta.pro secondary industries

Luxury Whole-Home Renovation (High-End Finishes & Custom Build) (HSAPAEAI), Full Kitchen Remodel (Layout Reconfiguration) (HSAPAAAA), Full Bathroom Remodel (Design-Build) (HSAPABAA), Home Office / Studio Additions (HSAPADAI)

Keywords

• Interior architecture services
• Residential renovation design
• Apartment redesign studio
• Minimalist interior styling
• Boutique commercial design

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Architecture and Renovation Services: Complete renovation and decoration services for apartments and boutiques, including full project management from design through delivery. Projects range from 50-170 m2 residential apartments to commercial spaces like the Poudre Organic boutique.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Heju Studio is an architecture and interior design firm that delivers complete renovation and decoration services for residential apartments and commercial boutiques in the Paris region. Projects typically span 50–170 m² and include full project management from design concept through delivery, space optimization, custom furniture, and material specification with a signature blend of Japanese and Scandinavian minimalist influences. The studio also monetizes adjacent intellectual property through the published book "Design It Yourself" and sculptural furniture collaborations with brands such as Nobodinoz and Intervalles (La Lune).

Product overview

Heju Studio is a French architecture and interior design studio founded by Hélène Pinaud and Julien Schwartzmann in 2015. The studio specializes in residential renovations, blending Japanese and Scandinavian influences with minimalist aesthetics. The studio offers interior architecture and complete renovation services for apartments and duplexes in Paris. Beyond client projects, Heju Studio operates a blog featuring DIY content, has published a book titled 'Design It Yourself' featuring craft tutorials, and collaborates on design collections such as Nobodinoz furniture and La Lune (Intervalles) artisanal pieces. The studio is not a software or technology company but rather a traditional design practice.

Differentiator

Problem solved

Functional benefit

Products and services

• Apartment Renovation & Interior Architecture Services End-to-end renovation and interior architecture services for private apartment owners in the Paris region, including concept design, spatial optimization, custom furniture and built-ins, material specification, and full project management through delivery.
• Boutique & Commercial Interior Design Renovation and decoration services for small retail and boutique spaces in Paris, focused on creating distinctive, brand-aligned interior environments using natural materials and minimalist spatial planning.
• "Design It Yourself" Book Published book by Heju Studio's founders featuring step-by-step DIY tutorials for craft and design projects, extending the studio's "Poetic Minimalism" philosophy to a wider consumer audience.
• Nobodinoz Sculptural Furniture Collection Co-designed sculptural furniture collection produced and distributed in partnership with the Nobodinoz brand, translating Heju's minimalist aesthetic into a third-party-branded product line.
• La Lune (Intervalles) Artisanal Collection Artisanal design collection produced in collaboration with the Intervalles brand (La Lune), featuring handcrafted pieces that reflect Heju's preference for natural and patina-friendly materials.

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

14 partnerships are on record, tiered minor.

• Poudre OrganicminorStrategic or Co-development Partner · 1 December 2018Renovation and decoration of 50 m2 boutique at 38 rue du Château d'Eau, Paris 10ème. Project completed December 2018, creating a distinctive retail environment reflecting the children's fashion brand's aesthetic.
• NobodinozminorStrategic or Co-development PartnerSculptural furniture collection collaboration. Heju designed a collection for the Nobodinoz brand, featured on their website under collaborations.
• KaunisteminorStrategic or Co-development PartnerFinnish-Japanese textile brand collaboration. Heju conducted DIY workshops at the Finnish Institute featuring Kauniste fabrics. Brand creates patterns in collaboration with Scandinavian illustrators.
• Leroy MerlinminorGTM or Marketing PartnerDIY content partnership creating tutorials using Leroy Merlin materials. Multiple projects created including cylinder lamp, copper clothing rack, and perched planter.
• Urban OutfittersminorGTM or Marketing PartnerDIY content partnership creating tutorials using Urban Outfitters products. Projects include marble stand and plant support designs.
• Farrow & BallminorGTM or Marketing PartnerPaint partnership for DIY and interior projects. Featured modular furniture project at Farrow & Ball showroom opening in Strasbourg. Multiple interior projects use Farrow & Ball paints.
• EtsyminorGTM or Marketing PartnerDIY content created for Etsy blog featuring handmade ceramic-inspired project.
• Galeries LafayetteminorGTM or Marketing PartnerDIY workshop partnership. Heju conducted holiday-themed DIY workshop at Galeries Lafayette on 'blanc extra polaire' theme.
• BHVGTM or Marketing PartnerDIY workshop partnership at Parisian department store BHV.
• DesignerboxminorGTM or Marketing PartnerDesign collaboration creating a set for Designerbox subscription box.
• Atelier BrunetteminorGTM or Marketing PartnerChristmas DIY partnership featuring geometric tree forest centerpiece project using fabric technique.
• Office Hollandais des FleursminorGTM or Marketing PartnerDIY workshop partnership promoting flower usage in home decor. Created three plant-themed DIY projects.
• Pepperclip StudiominorImplementation/ SI/ Consulting PartnerWebsite development partner credited for website design and development.
• DawandaminorGTM or Marketing PartnerDIY content partnership creating jewelry lamp tutorial using Dawanda materials.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Studio KO: Paris-based architecture and design studio of Karl Fournier and Olivier Marty, operating at a similar boutique scale with high-end residential and hospitality projects. Comparable founder-led, aesthetically distinctive boutique practice serving similar Parisian and international clientele.
• Laura Gonzalez: Paris-based interior architect and designer working on luxury residential, hospitality, and retail projects. Operates in the same premium Parisian market with strong media presence and brand-led positioning.
• Ramy Fischler: Paris-based interior designer and architect with a portfolio of luxury residential and product design work. Competes for similar premium mandates from Parisian and international design-aware clients.
• Studio Vincent Van Duysen: Belgian architect and designer with a minimalist material-driven aesthetic closely aligned with Heju's 'poetic minimalism.' Competes for similar European luxury residential clients and shares a naturalistic material palette.
• Tristan Auer: Paris-based interior designer with a portfolio of high-end residential and hotel projects. Targets a similar Parisian HNW clientele with a comparable blend of classical architecture and contemporary interior design.
• Pierre Yovanovitch: Paris-based interior designer known for high-end residential and commercial projects with a distinctive design language. Direct competitor for premium Parisian renovation mandates and editorial visibility in the same design publications.
• Joseph Dirand: Paris-based architect and interior designer known for minimalist luxury residential and hospitality work. Competes for similar HNW Parisian clients with a comparable minimalist-luxury aesthetic.
• Le Berre Vevaud: Paris-based architecture and interior design studio with a portfolio of high-end residential and retail projects in Paris. Operates at comparable scale with a similar full design-build service offering.

Emerging players

• Atelier Vime: Boutique French design studio blending craftsmanship with minimalist design. Shares the focus on natural materials, artisan collaborations, and sculptural furniture that Heju has built its brand around.
• Norm Architects: Copenhagen-based architecture and design studio with a minimalist Scandinavian aesthetic that directly informs Heju's design language. Operates in adjacent geography but competes for similar internationally-minded luxury residential clients.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/hejustudio
• Pinterestpinterest.fr/hejublog

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Heju Studio