How much does a custom size garage door cost in Ottawa if my opening is not a standard dimension?

Non-standard garage door openings are more common in Ottawa than you might think, especially in older neighbourhoods like the Glebe, Westboro, Old Ottawa South, and Sandy Hill where garages were built decades ago to different size conventions. Homes built before the 1970s often have narrower or shorter openings than today's standard sizes, and some custom-built homes have oversized openings designed for specific vehicles or workshop use. Getting a door that actually fits requires either a custom order or some structural modification, and the costs vary significantly depending on which route you go.

Standard single garage doors come in widths of 8, 9, or 10 feet and heights of 7 or 8 feet. Standard double doors are 16 feet wide by 7 or 8 feet tall. If your opening falls outside these dimensions, you are looking at a custom-sized door.

A custom-width door that is close to a standard size, say 8.5 feet or 11 feet wide, typically costs 30 to 50 percent more than the equivalent standard door. For a basic insulated steel door in a non-standard width, expect to pay $1,500 to $3,000 for the door itself plus $400 to $800 for installation in Ottawa. The premium comes from the fact that the door sections, springs, tracks, and hardware all need to be manufactured to match your specific dimensions. Lead times are longer too, usually four to eight weeks compared to one to two weeks for a stock size.

For truly unusual dimensions, like very narrow openings on older Ottawa homes where the garage was originally designed for a single Model T sized vehicle, or extra-wide openings on rural properties in places like Manotick or Carp, the pricing can go higher. Doors wider than 18 feet or taller than 10 feet start at $3,000 to $5,000 or more for the door alone, and the structural requirements for tracks and springs become more complex.

Before ordering a custom door, it is worth considering whether modifying the opening to accept a standard door might be more cost-effective. Widening or narrowing a garage door opening involves framing work and possibly header beam modifications. In Ottawa, this type of structural work typically costs $800 to $2,500 depending on whether the wall is load-bearing and how much the opening needs to change. If you only need to adjust the opening by a few inches, this approach can save money overall because you get a standard-priced door on a slightly modified opening rather than paying the custom premium.

Getting the Right Measurements

Accurate measurements are absolutely critical for a custom order and you should have a professional take them. The width measurement needs to be taken at the widest point of the opening, the height at the tallest point, and both side rooms and headroom above the opening need to be confirmed for track and spring clearance. If your headroom is limited, which is common in older Ottawa garages with low ceilings, you may need a low-headroom track system, which adds $200 to $500 to the installation cost.

Material options for custom doors are the same as standard doors. Steel is the most common and cost-effective. Wood custom doors are available but add substantial cost, running $2,500 to $6,000 or more depending on the species and design. Aluminum and glass contemporary doors in custom sizes start around $4,000 and go up from there.

For the best pricing in Ottawa, get quotes from at least three garage door companies and make sure each one is measuring your opening themselves rather than working from measurements you provide. A quarter-inch error on a custom order means the door does not fit, and returns or modifications on custom doors are either impossible or extremely expensive. Most reputable Ottawa garage door companies include the measurement as part of their quote process at no charge.

Spring and opener systems also need to be sized for a custom door because the weight will differ from standard doors. This is included in a professional installation quote but worth confirming so you are not surprised by add-on charges.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Homeupgraders
• JC Carpentry
• Pure Flow Water Solutions inc.
• Ottawa Garage Doors & Openers
• Floor-2-Wall Inc