Plumbing Permit Drawings
Plumbing permit drawings for qualifying residential, commercial and other Ontario building projects, prepared within the applicable BCIN plumbing qualification and coordinated with the proposed floor plan, fixtures, services and other disciplines.
What plumbing permit drawings can include
The permit scope can vary widely, but may include:
- plumbing fixture layouts and connection information
- sanitary drainage and venting layouts
- water-distribution information relevant to the building permit scope
- riser, schematic or isometric information where required for the project
- coordination of plumbing walls, shafts, floor penetrations and equipment
- coordination with architectural/building design, HVAC and structural information
The building type changes the plumbing scope
A house renovation, restaurant, clinic and industrial unit can have very different plumbing demands and Code issues. Fixture counts, occupancy, commercial equipment, grease/oil handling, backflow protection, service capacity and municipal servicing can introduce requirements outside a simple interior plumbing layout.
Interior plumbing and site servicing are different scopes
Building plumbing drawings do not automatically include municipal water/sewer service design, civil site servicing, fire-suppression systems or utility approvals. If the project reaches into those areas, the responsible civil, fire-protection or professional engineering provider may need to be involved.
Coordinate plumbing before the floor plan is frozen
Plumbing affects washroom locations, floor elevations, slab penetrations, ceiling space and mechanical-room planning. Early coordination is especially important in restaurants, clinics, additional dwelling units and renovations where existing drain locations or service capacity can control the layout.
Common questions
Do I need plumbing drawings for a basement apartment?
Often yes when fixtures, drains, vents or water distribution are added or altered. The municipality may require plumbing information as part of the building-permit package.
Can you prepare plumbing drawings for a restaurant?
Potentially, depending on building scope and qualification. Food-service projects may also involve grease management, public-health and mechanical requirements that must be coordinated separately.
Does a plumbing permit drawing include the plumber’s installation work?
No. The permit design communicates the intended compliant system. The contractor remains responsible for installation, workmanship, testing and required inspections.
Can you design new municipal water and sewer connections?
That is a separate site-servicing/civil scope and may require additional professionals and municipal approvals. We identify that boundary during scoping.
What if existing drains are not where the drawings assumed?
Concealed existing services are common renovation risks. The actual condition should be documented and the affected design reviewed before construction continues.
Can plumbing be coordinated with HVAC and electrical in one package?
Yes. For projects with several technical disciplines, the MEP coordination service is designed to align those drawings and reduce conflicts.
What to send for a quote
- property address and municipality
- building type and proposed use
- existing/proposed floor plans
- fixture/equipment list where known
- existing plumbing drawings or photos of visible services if available
- municipal permit comments or servicing information already received
Related technical / coordination services
HVAC & Mechanical Permit Drawings · MEP Drawing Coordination · Restaurant Permit Design · BCIN Permit Drawings
828 Design Inc. — BCIN building design & permit services. Technical content reviewed against current Ontario Building Code, ESA and professional-responsibility context: August 2026. Requirements are confirmed for the actual building, municipality, qualification category and written scope. Qualifications & responsibility →
Need plumbing drawings for a permit submission?
Send the floor plan, project use and proposed fixtures. We can identify the plumbing drawing scope and any servicing or professional coordination needed.