LATTAG Studio Inc. is a full service Architecture firm established by OAA Architect Peter Latoszek in 2012.

Since childhood, Peter has been motivated by Architecture to examine and question our built environment. His approach has often been hands on, as can be seen in the recognition section of this website. These practical explorations of ‘learning through making’ have accumulated into an arsenal of skills and knowledge about sustainable materials and building methods. That along with integrity and care makes LATTAG an essential part of any project (new construction and/or retrofit).


New Construction, Additions, Renovations, Unit Outfitting, Tenant Improvements:

Architectural Design

Structural Design

Construction/ Project Management


Interior Design

Custom Fabrication (Project by project case only)

Zoning Approvals (Ex. Committee of Adjustment, LPAT, Consent, Rezoning)

Building Permits, Heritage and Conservation Approvals

Site Planning Approvals

Facility Condition Assessments/ Building Envelop Review

Feasibility Studies

Preparation of Measured/ Existing Drawings


  1. Initial Conversation
  2. Schematic Design Phase
  3. Design Development Phase
  4. Permits and Approvals
  5. Construction Document Phase
  6. Bidding/ Negotiation Phase
  7. Construction Phase
  • 1 – Initial Conversation

    We start by listening to our clients’ needs in order to understand them from all perspectives (Ex. new building design, addition or alteration design etc.*).

  • 2 – Schematic Design Phase

    Once these needs have been identified we propose numerous solutions which are critiqued both by us and the clients for appropriateness to solving their needs (Ex. More space can be obtained by finishing the existing basement or first underpinning the basement and then finishing it or adding space to the house by way of some addition or building a completely new house etc.*).

    The appropriateness of each solution is assessed against all applicable parameters such as eco-friendliness, budget, schedule, durability, comfort, efficiency (Ex. The budget only allows for the basement to be finished and not for any of the other options*). Once we narrow down an acceptable solution with the clients, we propose strategies or options for their realization within the agreed parameters (Ex. The finished basement will contain a bedroom, bathroom, mechanical room, laundry, storage space and a family room but how these spaces are configured has many possible arrangements*).

    Note* Examples used were chosen from a small scale residential setting to ensure subject acquaintance since most individuals will associate with a house.

  • 3 – Design Development Phase

    When the design options are wrapped up into a final option with the clients’ approval we proceed to develop that design. At this point we may involve other consultants who specialize in their respective fields. These may include civil, structural, mechanical, plumbing and/or electrical designers/ consultants to name a few. We work as a team to coordinate all the different elements involved in preparing the project design to meet various regulations such as planning, zoning, conservation, transportation and/ or building.

  • 4 – Permits and Approvals

    Once we have produced synchronized and client approved design/ permit documents, a submission is made to the appropriate regulatory agencies in their proper sequence to obtain building approvals.

  • 5 – Construction Document Phase

    As the regulatory agencies review the design/ permit documents for compliance to applicable regulations, we advance these documents to become construction documents. This is accomplished by adding sufficiently detailed information and specifications to allow a general contractor or sub-trades to bid and execute the build of the project design with minimal requests for additional information from the design team. (Ex. The building authority is not concerned with what tile was chosen for the bathroom and how it will be installed but we and the clients do. So we communicate this information to the installer with construction drawings and specifications*).

  • 6 – Bidding/ Negotiation Phase

    In this phase, our involvement is applicable in a traditional Design Bid Build delivery model, as well as, other delivery models at different involvement scales. There are many newer delivery models which have been introduced over the years such as Aligned, Construction Management, Design-Build, Integrated Project Delivery, Project Management and Public-Private Partnership. Each project delivery model has its own benefits and drawbacks which are worth exploring in more detail.

  • 7 – Construction Phase

    As architects during construction of the project, we perform periodic general reviews, attend site meetings, review shop drawings, issue supplemental details and payment certifications to name some. As construction managers, we can generate and track the construction budget and schedule, provide accurate material estimates, as well as, negotiate and source them, commission sub-trades, provide full time on site representation, coordinate sub-trades and the clients’ own forces, update construction drawings in real-time etc.