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Integrated Solutions.
On Time.

Residential & multi-family plumbing and mechanical engineering — from design through to permit approval. Code‑compliant. Permit‑ready. On‑time.

How we deliver
your projects efficiently

Fire protection, plumbing and drainage, heating and ventilation, site services and lifting certification — coordinated so you can keep moving forward.

Fire Sprinkler Design

NFPA 13D, 13R, & 13R(Modified) compliant fire sprinkler system design for residential buildings — engineered for safety and approval.

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Plumbing & Drainage Design

Sanitary drainage, venting and domestic hot and cold water layouts for residential and multiplex projects — fixture schedules and permit-ready drawings.

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Heat Pump & HVAC Design

Whole-suite heat pump and HRV/ERV systems — duct distribution, equipment selection and load calculations for residential and multi-family buildings.

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Sump Pump Design

Complete sump pump system design for residential and multi-family projects (multiplex), ensuring proper drainage and code compliance.

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Water & Sewer Connection Site Plans

Water and sewer connection site plans — fully code-compliant and permit-ready for municipal submission.

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Lifting & Load Certification

Flyable bin and lifting equipment certification — design calculations, lug detailing, rated capacity and stamped drawings.

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We handle the
engineering details
so you can focus
on the build.

At ISO Designs, our mission is to make residential and multi-family projects easier to build, approve, and deliver. We coordinate the critical mechanical systems behind every project — fire protection, plumbing, drainage, and site services — so our clients can keep their projects moving forward without the stress of managing every requirement.

We take ownership of the details, respond quickly when requirements change, and work closely with the construction team & city reviewers to ensure each project moves smoothly from design to approval.

Code Compliant Permit Ready Sealed by a P.Eng. Schedules B & C-B Fire Sprinkler Design NFPA 13D & 13R Plumbing & Drainage Sump Pump Design Heat Pump & HVAC Water & Sewer Connections Single Family Laneway House Coach House Duplex Townhouse Multiplex Secondary Suite Multi-Family Projects Code Compliant Permit Ready Sealed by a P.Eng. Schedules B & C-B Fire Sprinkler Design NFPA 13D & 13R Plumbing & Drainage Sump Pump Design Heat Pump & HVAC Water & Sewer Connections Single Family Laneway House Coach House Duplex Townhouse Multiplex Secondary Suite Multi-Family Projects

Ready to start
your next project?

Tell us what you are working on and we'll come back with a scope and a price — and ask for drawings if we need them.