Worked example: compare two options and their unknowns
Fictional example: an owner wants an enclosed workspace and a better garden connection. Both options below address the same brief. No survey, structural calculation or property-specific regulatory review has taken place; the “to check” items are useful preparation outputs, not feasibility findings.
The next decision is not necessarily to start every drawing. It may be to check a fact that changes the choice: a possible wall opening, potential siting, access level or approval scope. The study agreement identifies actual comparisons and the information supporting them.
| Criterion | Internal reorganization | Rear addition |
|---|---|---|
| Target need | Create the room within the existing volume. | Create the room in a new volume. |
| Trade-off to study | Use of the converted room and circulation. | Outdoor area, access and daylight in retained rooms. |
| Technical unknown | Identify affected walls and systems. | Review connections to existing construction and structure. |
| Regulatory unknown | Check the process applying to the alterations. | Check siting and applicable approvals. |
| Next decision | Confirm the brief and necessary surveys. | Define necessary site records and checks. |
Start with the decision you need to make
A useful study addresses a defined question: which option deserves further development, which obstacle needs to be resolved or which information is missing for a decision? It does not mean drawing a complete project before establishing a basis to proceed.
- Describe the spaces or uses you need and what must be retained.
- Identify the decision you need and the constraints already known.
- Separate available facts from assumptions requiring investigation.
Records that guide the checks
The exact address, municipality, photos and older drawings help frame the request. A location certificate and municipal correspondence, where available, add context. Their date and scope matter: an older drawing alone does not establish the building’s current condition.
Identify missing records and inaccessible areas. The need for a survey or checks by other professionals is defined in the scope; unknown information is not presented as a conclusion.
Deliverables proportionate to the question
Depending on the question and available records, the quote may include a summary of constraints, compared options or concept sketches. The deliverables and their purpose are agreed before work starts; not all are automatically included.
The study does not replace detailed drawings, engineering studies or a permit application. It is not a guarantee of construction cost. Study fees, municipal charges and subsequent services are separate items.
Move from the study to the next step
If an option is retained, design and required documents are covered by an appropriate scope. If an issue remains open, the next step may be a targeted review rather than complete drawings. Timing depends on available information and contributors; municipal review follows its own schedule.
Questions and answers
What should a study help me decide?
Define the question before commissioning work: comparing options, identifying an obstacle or preparing acquisition checks, for example. The deliverable should distinguish verified facts, assumptions, missing information and the next action. Its reach depends on the records reviewed; it does not automatically replace detailed drawings or municipal authorization.
Must an unconfirmed option be abandoned?
Not necessarily. A specific record or additional check may resolve an unknown. Ask which information would change the finding and when it is needed. This distinguishes an insufficiently documented option from an established incompatibility.