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Residential Addition Design and Permit Drawings

Design and permit drawings for rear additions, side additions and full second-storey additions.

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Is this you?

  • You want to build onto the back or side of your house
  • You are adding a full second storey
  • You need a larger kitchen, family room or bedroom space
  • An addition was built without a permit
3D model view of a two-storey house with additions at the rear

An addition has to work with the house you already have and with the zoning for your lot. Matters that may need consideration include setbacks, lot coverage, building height, how the new structure connects to the existing one, and the condition of existing construction. Structural engineering may be required, particularly for second storeys; it is coordinated and quoted separately.

Existing and new elevations

What’s included

  1. Foundation plan
  2. Existing and proposed floor plans
  3. Elevations
  4. Building sections
  5. Typical construction details
  6. Site plan, as applicable
First floor plan with a bedroom, bathroom, walk-in closet, sitting room, kitchen and living room, with the adjoining unit shaded and marked NIC
New first floor plan of the same project. The shaded portion marked NIC (not in contract) is outside the scope of the drawings. Open full-size drawing · See sample drawing sets

Not included or separately scoped

Structural engineering, where required. We can help coordinate with qualified engineering professionals; engineering services are scoped and quoted separately.
Where engineered roof trusses, floor systems or other specialized structural components are required, Neo-Scenic can coordinate the relevant supplier or engineer documentation with the building permit drawings.
HVAC design is scoped separately from our architectural drawings. You can hire us for it, or use another qualified HVAC designer.
Surveys, where required.
Permit application management (optional)
Permit application management is an optional service you can add to your design and drawing work. Drawing preparation and application submission are separate steps. Submitting an application does not guarantee municipal approval.

How it works

  1. Initial conversation

    We discuss your project and identify any zoning or municipal requirements that may need further review.

  2. Site visit, where needed

    By appointment, we measure and document the existing conditions. If a visit is needed to assess the project before quoting, it is billed separately. Where applicable, any credit for the visit toward subsequent design services will be confirmed in your written quotation.

  3. Written quote

    We provide a written quote outlining the proposed scope and fees before drawing work begins.

  4. Preliminary design

    You review the proposed layout. This stage typically includes up to three rounds of revisions. Changes after you approve the concept may involve additional fees.

  5. Permit drawings

    We prepare the drawing set and supporting documents for your permit application. Reasonable drawing revisions arising from municipal review are included.

Submitting the application

We guide you through what your project needs and prepare the drawings and documents. If you would like us to submit the application and coordinate with the municipality for you, we offer that as an optional additional service.

The full process

Addition already built without a permit?

If an addition was built without a permit, we can review it and advise whether drawings for a permit application make sense. The municipality may require finished work to be opened up, tested or changed, and decides on the application.

Retroactive building permits

Questions

Do I need an engineer for my addition?

It depends on the project. Structural engineering may be required, for example for some second-storey additions. Where it is, we can help coordinate with qualified engineering professionals; it is scoped and quoted separately.

Can you submit the permit application for me?

Yes, as an optional service. Preparing the drawings and submitting the application are separate steps. If you would like us to submit the application and coordinate with the municipality, we quote that separately. Submitting an application does not guarantee approval.

How much do permit drawings cost?

It depends on the project: its size, what already exists on site, and which drawings and documents your municipality asks for. Starting prices for common projects are shown on our service pages, before HST. We confirm the scope and fees in a written quote before drawing work begins. If a site visit is needed to assess the project before quoting, it is billed separately. Where applicable, any credit for an initial site visit toward subsequent design services will be confirmed in your written quotation.

More questions

Building permit drawings across Ontario, with local service in London, Kitchener and Middlesex County. Residential HVAC design across Ontario, including remote projects where suitable.

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Office and site visits by appointment only.