Legal Basement Drawings & Permit Services in Ontario, CA - RNH Design

Legal Basement Designs, Permit Drawings, Rental Basement Permits

We help homeowners register their basements by obtaining a legal basement permit.

Starting at $1000


Suppose you’re someone who has a property to which you’re looking to add more value. In that case, the best option is to build a second dwelling unit that acts as a secondary house or apartment for you to increase your overall asset value and bring you a consistent source of income if you plan on renting the unit.

Most people use it as a guest house to provide the guests with their privacy and freedom to be comfortable.

However, a lot goes into establishing a basement second dwelling unit, such as compliance with the law, the placement of your unit, the age of your property, and other home characteristics such as ceilings, windows, and so on.

There are zoning restrictions that often restrict the size and appearance of any new unit.

Before you decide on your second basement-dwelling unit, you should consult us to get clarity on the permit requirements and the restrictions placed by the law depending on your locality as well as the property structure. For example, the By laws for building a second dwelling unit in Brampton may differ from those in Hamilton.

With all the years of experience in designing such units, we consider all of these required factors to get the most value out of your second housing basement unit.

Why do you need this service?


It is essential to obtain a legal basement permit if you are looking to rent your basement. 

Have you received a notice from the city to comply with the order? Don’t worry, we got your back and will help you obtain a permit for your basement from the city.

Experienced Design Professionals serving the Greater Toronto Area and Ontario with Residential and Commercial Permits.

Call us today at 226-747-7966. We are ready to help you with any of your design needs.

Our Process

Call or Email

Call us to discuss about your design project at 226-747-7966, [email protected]

Schedule a Site Visit

Once confirmed. Schedule a site visit by one of our team members at your property to measure as per the code.

Design & Drafting

We start your design process and drafting of the drawings as per Ontario Building Code.

Iterations with homeowner

We present our design to the homeowner for approval before submitting to the municipality.

Application Submission

We submit the selected final design to the municipality on the behalf of the owner by filling the permit application.

Final Permit Approval

We help you to get a permit from the municipality for your project so that the project can begin as per the code requirements.


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Because it is mandatory to legalize your basement if your intent is to rent it out. Moreover it is safe to rent a legal basement from the fire separation and safety standpoint. It also helps to boost the value of your house.

They are both the same. People use these names interchangeably depending on the municipality they live in. Second dwelling unit/legal basements are used for rental purposes.  However there is a second type of permit which is called ‘Owner use Basement or Finish Basement Permit’ which lets the owner use the basement for their own personal use only.

Yes, You need to design your basement as per Ontario Building Code (OBC) in order to register as a second dwelling unit/legal basement to use it for rental purposes.

It depends from project to project and the material to be used in the basement. Contractor’s will be able to quote you the basement pricing after the permit is obtained from your local municipality. Major cost driving factors are separate entrance, egress window, ESA (electrical) and fire separation.

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