5R Studio

What 5R Studio does

5R Studio (also referenced as Studio 5R) is a privately held architecture and design firm headquartered in Sofia, Bulgaria, founded in 2020 by architects Ralitsa Zorteva and Petya Demireva. The studio operates with a small team of three named architects and provides professional architecture and design services covering the full project lifecycle, including preliminary investment studies, investment design, interior design, lighting design, public spaces design, reconstructions and renovations, and author's supervision. Its core technology consists of industry-standard architectural design tools and methodologies rather than any proprietary platform, and the firm delivers work as bespoke commissioned projects rather than packaged products.

The studio serves residential, commercial, and interior clients in the Bulgarian market, with a disclosed portfolio spanning a 500 sq.m. interior project for Global Brands Distribution completed in 2016, a 995 sq.m. residential project (KVIO) for HIKS 5M GROUP under construction as of 2023, and a 6,400 sq.m. residential project (MLIO/KIO) for HIKS 5M GROUP in progress as of 2023. Business model is professional services: clients engage the studio directly via phone, email, or web contact channels, and projects are quoted on a per-project basis with no publicly disclosed pricing. Go-to-market is sales-led and direct, supported by a portfolio website and organic social presence on Facebook and Instagram. The firm has no disclosed funding, no external shareholders, no parent company, and no documented partnerships, awards, certifications, or regulatory actions.

Name

5R Studio

Legal name

5R Studio

Website

https://5rstudio.eu

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

5R Studio is a small Sofia, Bulgaria-based architecture and design firm founded in 2020 by architects Ralitsa Zorteva and Petya Demireva, offering full-lifecycle architectural, interior, lighting, and public space design services directly to residential and commercial clients in Bulgaria.

Ownership category

akta.pro rank

Headquarters

HQ city

Sofia

HQ country

Bulgaria

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Architecture and Design Services: Professional architecture and design services covering the entire project lifecycle from preliminary investment studies through investment design, interior design, lighting design, public spaces design, reconstructions, renovations, and author's supervision.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

5R Studio is an architecture and design studio offering professional services covering the entire project lifecycle from preliminary investment studies through investment design, interior design, lighting design, public spaces design, reconstructions, renovations, and author's supervision. The studio serves residential, office, commercial, and institutional clients with full-service architectural design and project supervision capabilities.

Product overview

5R Studio is an architecture and design firm based in Sofia, Bulgaria, founded in 2020 by architects Ralitsa Zorteva and Petya Demireva. The studio offers a comprehensive suite of design services including Investment Design, Preliminary Investment Studies, Interior and Lighting Design, Public Spaces Design, Reconstructions and Renovations, and Author's Supervision. Their project portfolio spans residential buildings, private houses, interior design projects (such as ZAI - 500 sq.m. completed in 2016, and KVIO - 995 sq.m. residential in Sofia under construction), and large-scale residential projects like KIO/MLIO (6400 sq.m. in progress). The studio serves clients including HIKS 5M Group and Global Brands Distribution, providing end-to-end architectural services from feasibility studies through construction supervision.

Differentiator

Problem solved

Functional benefit

Products and services

• Investment Design Comprehensive architectural design services covering the entire investment project lifecycle from initial concept through construction documentation, for residential, office, and commercial clients.
• Preliminary Investment Studies Pre-design feasibility studies and investment analysis to evaluate project viability and strategic planning for real estate and commercial development projects.
• Interior Design Interior design services for residential, office, and commercial spaces, integrating interior fit-out with architectural context.
• Lighting Design Specialized lighting design services integrated with interior and architectural projects to deliver comprehensive lighting solutions.
• Public Spaces Design Design services for public spaces and urban environments, addressing the integration of buildings with their surrounding context.
• Reconstructions and Renovations Renovation and reconstruction design services for existing buildings and spaces, enabling adaptive reuse and modernization projects.
• Author's Supervision Architectural supervision services ensuring design implementation throughout the construction process, providing quality assurance and design fidelity.

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators1 record

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• Gensler: Global architecture and design firm with strong commercial and interiors practice. Comparable on integrated architecture and interior design services for office, retail, and residential clients, though serving a global enterprise roster rather than a local Sofia market.
• Aedas: Global architecture practice with offices across Asia, Europe (including Central/Eastern Europe), and the Middle East. Comparable as a provider of architectural design across residential, commercial, and public projects, with established Eastern European presence relevant to 5R Studio's regional context.
• BIG (Bjarke Ingels Group): Design-driven architecture practice working across residential, commercial, and urban-scale projects. Comparable in providing integrated architecture and design services with attention to context, but operating at global scale rather than a single-city boutique.
• Foster + Partners: Global architecture practice with a broad portfolio spanning commercial, residential, and public projects. Comparable as a full-service architecture firm offering investment-stage design through supervision, but operating at much larger scale and geographic reach than 5R Studio.
• OMA: International architecture firm working across residential, commercial, and cultural projects. Comparable on design-led philosophy and full-lifecycle architectural services, but operating at significantly larger scale than 5R Studio.
• MVRDV: Dutch architecture practice with a strong portfolio in mixed-use, residential, and public-space design. Comparable on integrated architecture, interior, and public space design services, though at global scale rather than a single-city studio.
• Zaha Hadid Architects: International architecture firm known for design-led projects across residential, commercial, and public sectors. Comparable on full-lifecycle architectural services and design philosophy orientation, though vastly larger and globally distributed versus 5R Studio's Sofia base.
• Perkins&Will: International architecture practice offering design services across multiple building types. Comparable on full-lifecycle architectural design from concept through supervision, but with global scale versus 5R Studio's small, locally focused team.
• Skidmore, Owings & Merrill (SOM): Large global architecture, urban planning, and engineering firm active across commercial, residential, and public projects. Comparable as a provider of end-to-end architectural services from feasibility to supervision, but with vastly broader scale and reach than 5R Studio.

Direct peers

• John Pawson Ltd: Boutique design-led architecture practice focused on residential, interior, and public space projects. Comparable as a small, founder-led studio offering integrated architecture and interior design with a rational, context-driven philosophy — similar in scale and positioning to 5R Studio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/5rstudio.eu
• Instagraminstagram.com/5rstudio.eu
• LinkedInlinkedin.com/company/5r-studio

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 5R Studio