top of page


Design Practice

Rouhiainen Móricz Arkkitehdit Oy was founded 2020 after the merger of Arkkitehtitoimisto Petri Rouhiainen Oy and Arkkitehtitoimisto Studio Nen Oy in 2018.


Arkkitehtitoimisto Petri Rouhiainen Oy was an architectural practice founded in 1995 and Arkkitehtitoimisto Studio Nen Oy in 2003. These companies collaborated in corporate management, operational development, and planning tasks during their existence.


The Company’s Managing Director is Petri Rouhiainen, MSc Architect SAFA.

He also is also Chief Designer in both building design projects and urban development projects.


Annamária Móricz-Rouhiainen, MSc Architect SAFA, is th Company’s Development Director and Chief Designer in building design projects, she is also an AA level chartered FISE member.

Petri Rouhiainen and Annamária Móricz-Rouhiainen are the partners of the Company, and both are in charge of customer cooperation and support.

Rouhiainen Móricz Arkkitehdit Oy is a member of the Association of Finnish Architects’ Offices (ATL).

Keitä olemme: About

Our main design areas are:

-     Town planning, project development, and urban development

-     Residential design

-     Commercial and office building design

-     Renovation design

-     Conceptual design


Our operations are based on:

-     High-quality architectural design

-     Versatile professional expertise

-     Continuous development of quality processes


Our strengths include a firm grasp of the entire planning chain – from town planning assessments to the most demanding principal design of building complexes.

We provide project-related interior, architectural, and principal design.

Our design team includes A- and AA-class principle designers.


The implementation of all our urban design and architectural design tasks are based on Building Information Modelling.


Our primary design tools are ArchiCAD and Revit Architecture.


Our design teams both urban and resideltial are currently collaborating with approximately 10 design professionals. In special design tasks we utilise the resources of established partners drawn from a wide-ranging network that includes a substantial number of Building Information Modelling consultants, engineers, architectural practices and environmental planners.

Selected Projects


City planning

Our experience working with public authorities in town planning and urban design projects is extensive. The tasks vary from townscape image clarifications to large-scale reference plans.

Project development

A significant portion of our urban design commissions consists of project frameworks in which the developmental potential of regional entities or single sites is studied jointly with the organisations undertaking the project.

Town planning

In town planning projects we execute the architectural design or reference designs required by town planning amendments and also prepare town planning materials when necessary.


A more detailed list of selected projects is available on request.



Residential design is one of our passions. We create designs for various needs that vary depending on the Client’s need s and programmatic requirements. Besides our extensive experience in large scale and small-scale housing projects, we continue to investigate the factors contributing to a pleasant and healthy living environment at a practical level.


We are particularly specialised in the design of large-scale residential complexes posing various technical and production-related challenges that include, for example, phased construction, extensive parking structures, as well as arrangements required by ventilation systems and fire safety.


Each building’s architectural appearance is conceived to suit its environment; architecture is always generated by the needs and ambience of its location, also taking town planning regulations and Client preferences into account.


Our substantial experience also strengthens our expertise in urban design projects where residential design plays a key role. The exchange of information between design teams is efficient and continuous.


A more detailed list of selected projects is available on request.



Commercial construction encompasses various project types that include, for example, individual office or commercial buildings, retail parks, or hybrid buildings combining commercial and residential solutions in city centres. Our project portfolio also includes conceptual structures tailored for specific clients.


A more detailed list of selected projects is available on request.



In our refurbishment and alteration commissions, usually related to commercial and residential structures, we cooperated closely with Arkkitehtitoimisto Studio Nen Oy.


A more detailed list of selected projects is available on request.



In our conceptual design commissions, usually various types of commercial and residential projects, we cooperated closely with Arkkitehtitoimisto Studio Nen Oy.


A more detailed list of selected projects is available on request.


Our E-mail addresses are in the form:


Office contact information:

Rouhiainen Móricz Arkkitehdit Oy

Fredrikinkatu 47, 00100 Helsinki, Finland

+358 (0)10- 281 7940


You can also find us on

Facebook: Móricz Arkkitehdit Oy


Urban developments:

Petri Rouhiainen, MSc Architect SAFA, AA Principal Designer

+358 (0)40- 903 0330

Commercial projects:

Petri Rouhiainen, MSc Architect SAFA, AA Principal Designer

+358 (0)40- 903 0330

Annamária Móricz- Rouhiainen, MSc Architect SAFA, AA Principal Designer

+358 (0)50- 365 4122


Concept design & Alterations:

Annamária Móricz- Rouhiainen, MSc Architect SAFA, AA Principal Designer

+358 (0)50- 365 4122


Residential projects:

Petri Rouhiainen, MSc Architect SAFA, AA Principal Designer

+358 (0)40- 903 0330

Annamária Móricz- Rouhiainen, MSc Architect SAFA, AA Principal Designer

+358 (0)50- 365 4122


We are constantly seeking for new opportunities to co-operate with other architectural firms and design practices.  We are creating long term collaborations with independent design consultants, i.e. architects, principal architects, landscape architects and urban planners.

Experience in Building Information Modelling design is a prerequisite. If your company is looking for new challenges and wants to become part of projects of excellent, please do not hesitate to contact us. We value excellent interactive skills, an adequate knowledge of local building code and ability to communicate with our clients in all phases of the projects if necessary.

In our urban design projects, we are interested in co-operation with companies with experienced project architects as well as assistant designers (students, junior designers) or individual professionals. Experience in Building Information Modelling design is a prerequisite.


Please contact us by e-mail, including a short company profile or your personal CV, contact information and a short covering letter.


E-mail contact:


Each planning task and client is unique. Our profession is a service profession; our aim is to provide our expertise to clients with whom we can successfully interact.


Architecture and urban planning are always tied to their locations. Needs generate content that in turn generates form. The selected stylistic orientation will be influenced by factors such as clients’ needs, residents’ preferences, local history, and legal guidelines. Our task is to extract the essential from every task, considering all frame conditions. Architecture is the framework for human activities. Form adapts, but it can also surprise.


Rationality and appropriateness are part of the process management of every design or construction project, but this cannot be the only factor guiding sustainable design. Without a main theme, without a well-prepared script, even the simplest task will get lost. The harmonic progression of each task must be played so that the melody is recognisable.


Perceiving each task’s requirements and mobilising each project group’s commitment towards a common objective, is our primary task as a project expert. We seek to understand design commissions as overall entities. Without an overall grasp, the management of sub-tasks will be lacking. Without a feeling for detail, the control of large-scale entities will remain incomplete. A symphony cannot be composed without an understanding of orchestral nuances. Every note, loud or soft, counts.


The physical manifestation of ecological sustainability appears in different forms depending on the design commission assigned to us. In structural engineering it can guide form giving or technical performance, in urban design the placement of functions.


We live in a time where the pace of global urbanisation is accelerating faster than during any other time in history. This poses formidable challenges for designers; our mission is to provide solutions for these challenges, one task and commission at a time. Because everything we do and produce leaves its mark, we aim at making our designs as sustainable as possible. The need to generate effective design solutions within existing societal frameworks is growing, as is the significance of design quality. This is also a challenge that we willingly accept.


With increasing frequency, we find ourselves facing situations where the resources available for a project are being weighed more precisely and with greater care. Waste consumes ecological capital from our common future, whether it is a question of space use, urban design, or land-use planning. Form giving follows the assessment of needs. You cannot have one without the other.


Competitions are a significant part of our successful architectural operations. Competitions broaden our perspectives, enhance our teamwork capabilities, and create opportunities. We believe in creative thinking. We believe in common sense. And we believe in emotional response, also a rational component of architecture.


We believe in discussion and interaction, within the office as well as in dialogues with our clients. We believe that the viewpoints and opinion of all parties are important in every design assignment. Our task in the planning process is to meet the expectations of all project participants while creating sustainable buildings and vital, developing cities built together with other professionals and city dwellers.

bottom of page