Seferin Arquitetura

What Seferin Arquitetura does

Seferin Arquitetura is a private, founder-led architecture practice headquartered in Porto Alegre, Rio Grande do Sul, Brazil, that designs custom residential houses, apartments, and selected commercial interiors. The firm is family-operated, with principals Gustavo Seferin and Marcelo Seferin heading a small named team that also includes Rosane Weronezi, Julia Zardo, and Eduardo Abreu; firmographic data lists 51-100 employees, but only five professionals are publicly identified, suggesting a lean core supported by project-based collaborators. Its portfolio of more than 50 completed projects spans Rio Grande do Sul, Santa Catarina, and São Paulo in Brazil, with at least one international engagement in Punta del Este, Uruguay, and includes single-family residences, vacation homes, beach and mountain houses, apartments, a corporate office for a law firm, and a furniture showroom.

The practice delivers services through three integrated lines — Residential Architecture (CASA), Commercial Architecture, and Interior Design (Interiores) — and is differentiated by an emphasis on human-centered spatial experience, indoor-outdoor integration, and design in challenging coastal and mountain terrain. Its underlying technology is conventional architecture design and project management software; there is no disclosed proprietary technology platform, API, or AI/ML capability. The firm partners with recurring specialists for interior design (HB Interiores), co-design (Mariana Fogliato), landscape architecture (Raul Pereira Arquitetos Associados), and project photography to extend delivery without expanding core headcount.

The business model is professional services: fees are custom-quoted per project, with no public pricing or standardized packages. Go-to-market is direct-to-client, portfolio-driven, and low-cost — the website and Instagram serve as the primary top-of-funnel, with WhatsApp, email, and contact-form inquiries converting into bespoke engagements. The client base is predominantly high-net-worth Brazilian families seeking unique, lifestyle-driven custom homes, supplemented by a small number of corporate and professional services clients; revenue is not publicly disclosed, and the firm has no institutional investors, funding history, or M&A activity.

Name

Seferin Arquitetura

Legal name

Seferin Arquitetura

Website

https://seferin.com.br

Company type

Private

Operating status

Operating

Headcount range

51–100 employees

Short description

Seferin Arquitetura is a private, founder-led architecture firm in Porto Alegre, Brazil, that designs custom residential homes, apartments, and select commercial interiors for high-net-worth Brazilian families, with a portfolio spanning southern Brazil and Uruguay.

Ownership category

akta.pro rank

Product category

Architecture Services

NAICS

Interior Design Services (54141), Interior Design Services (541410), Architectural Services (54131), Architectural Services (541310), Residential Remodelers (236118)

SIC

Services-To Dwellings & Other Buildings (7340)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Interior Design Services (BPAHAKAB), Luxury Whole-Home Renovation (High-End Finishes & Custom Build) (HSAPAEAI)

Keywords

• Residential architecture services
• Custom home design
• Interior architecture design
• Commercial office design
• Luxury residential projects

Headquarters

HQ city

Porto Alegre

HQ country

Brazil

HQ region

Latin America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Residential Architecture Services: Custom residential architecture design services for houses and apartments, including interior design. Projects range from vacation homes to permanent residences.
2. Commercial Architecture Services: Office and commercial space design services, including corporate interiors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Seferin Arquitetura provides full-service custom architectural design for residential houses, apartments, and commercial spaces in Brazil. Core offerings include conceptual design, project development, interior architecture, and space planning for high-net-worth clients. Projects span vacation homes, permanent residences, apartments, corporate offices, and commercial interiors, with terrain integration as a defining specialty.

Product overview

Seferin Arquitetura is a full-service architectural firm based in Porto Alegre, Brazil, offering three main service lines: Residential Architecture (CASA), Commercial Architecture, and Interior Design (Interiores). Their portfolio spans single-family homes, apartments, offices, and commercial spaces throughout southern Brazil and Uruguay, with projects ranging from 105m² apartments to 1,080m² luxury residences. The firm combines architectural design with interior architecture services, providing integrated project delivery from concept through completion.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Full-service architectural design including residential houses, apartments, and commercial spaces. Services encompass conceptual design, project development, and interior architecture for clients in Brazil and Uruguay.
• Residential Architecture (CASA) Single-family residential architecture projects including vacation homes, permanent residences, and houses in gated communities, primarily located in Rio Grande do Sul, Santa Catarina, and São Paulo.
• Interior Design (Interiores) Interior architecture and design services integrated with architectural projects, including custom furniture design and space planning for both residential and commercial clients.
• Commercial Architecture Office and commercial space architecture projects including corporate offices, professional practice spaces, and showroom interiors for business clients.

Named customers4 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Six partnerships are on record, tiered minor.

• Claudio FonsecaminorOthersPhotographer collaboration for documenting Complementi Móveis project. Claudio Fonseca is a professional architectural photographer based in Porto Alegre who provides photography services for the firm's project documentation.
• HB InterioresminorStrategic or Co-development PartnerInterior architecture partnership for Casa CE project at Condomínio Velas da Marina in Capão da Canoa. HB Interiores handled interior design while Seferin Arquitetura managed architecture.
• Raul Pereira Arquitetos AssociadosminorOthersLandscape architecture partnership for Casa HAC project in Bragança Paulista. Raul Pereira's team provided landscaping services for the project.
• Roberta GewehrminorOthersArchitectural photographer collaboration for documenting Casa F11 project and other residential projects. Provides professional photography for portfolio documentation.
• Mariana FogliatominorStrategic or Co-development PartnerArchitecture co-design partnership for Casa E79 project in Xangrilá. Collaborative architectural design approach for the residential project.
• NexminorOthersPhotography studio collaboration for documenting Casa C26 project and other projects. Provides professional architectural photography services.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Regional players

• Una Arquitetos: Brazilian architecture firm with a strong residential and commercial portfolio based in São Paulo. Comparable as another Brazilian firm in the luxury and contemporary residential space.
• Metro Arquitetos: São Paulo-based architecture studio with work in residential, commercial, and institutional projects. Comparable as a peer Brazilian firm working across project types and serving similar mid-to-high-end clients.

Direct peers

• FGMF Arquitetos: São Paulo-based studio with strong residential portfolio and award recognition. Directly comparable as another Brazilian high-end architecture firm targeting HNW clients with full-service design.
• Isay Weinfeld Arquitetura: Renowned São Paulo architect known for high-end residential, hospitality, and commercial projects. Comparable in the Brazilian luxury architecture space and similar founder-led, design-driven model.
• Studio Arthur Casas: São Paulo-based architectural practice known for high-end residential and commercial projects across Brazil. Directly comparable as a Brazilian luxury architecture studio serving HNW clients with integrated interior and architecture services.
• Bernardes Arquitetura: Rio de Janeiro-based architecture practice with strong residential and interior design portfolio. Comparable as another major Brazilian luxury architecture firm with integrated interior offerings and similar client demographic.
• Triptyque Architecture: Brazilian architecture firm with offices in São Paulo and Paris, working on residential, commercial, and cultural projects. Comparable in scope (residential + commercial) and in operating across multiple geographies including Brazil and internationally.
• mk27 Studio: São Paulo architecture firm specializing in contemporary residential projects, including luxury houses integrated with landscape. Comparable because it serves a similar HNW Brazilian client base and emphasizes indoor-outdoor integration like Seferin.

Broad incumbents

• Olson Kundig: US firm specializing in luxury residential and hospitality architecture, with strong portfolio of high-end custom homes. Comparable in serving HNW clients seeking bespoke, site-integrated architecture.
• Studio Wiliam Sofield: New York-based luxury architecture and interior design practice serving UHNW clients with residential and hospitality projects. Comparable at the high-end of the market for integrated architecture-interior services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat2 records

Key risks7 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/seferinarquitetura
• Instagraminstagram.com/seferinarquitetura
• LinkedInlinkedin.com/company/seferin-arquitetura

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 Seferin Arquitetura