How much extra space should I add to a garage for a workshop area in Dieppe NB?

Plan to add a minimum of 8 to 12 feet of extra depth or an additional bay of width to your garage for a functional workshop area, which translates to roughly 150 to 300 square feet of dedicated work space beyond what you need for vehicle parking. A workshop crammed into the leftover corners of a standard garage is frustrating to use and usually ends up as cluttered storage rather than productive work space.

The amount of space you need depends on what you plan to do. A basic home workshop for general repairs, small woodworking projects, and seasonal maintenance — with a workbench, a few power tools, and organized storage — needs roughly 8 by 12 feet (96 square feet) at minimum. This is enough for a 6-foot workbench along one wall with a small table saw or mitre saw station and room to manoeuvre materials. A serious woodworking or mechanical shop with a table saw, planer, drill press, and assembly space needs 10 by 16 feet (160 square feet) or more. If you are doing automotive work — engine rebuilds, welding, fabrication — you need even more open floor area plus clearance around the vehicle being worked on.

The most practical approach for a Dieppe garage is to add extra depth rather than extra width. If you are building a standard two-car garage at 24 feet wide, going from 24 feet deep to 32 or even 36 feet deep gives you a continuous work zone across the full back wall without reducing your vehicle parking space. A 24x32 garage provides 768 square feet — enough to park two vehicles and have an 8-foot-deep workshop zone spanning the full 24-foot width along the back wall. A 24x36 garage gives you a generous 12-foot workshop depth that accommodates a workbench, table saw, and separate assembly area comfortably. In the current Dieppe market, the additional depth adds approximately $8,000 to $18,000 to the project cost compared to a standard 24x24, depending on foundation type and finishing level.

Alternatively, adding a third bay — going from 24 feet wide to 36 feet wide at the same depth — gives you a dedicated workshop bay alongside two parking bays. This is ideal if you want to close off the workshop from the vehicle area with a partition wall, which keeps sawdust and grinding sparks away from your vehicles. A dedicated workshop bay also allows you to install separate heating, dust collection, and electrical systems optimized for the work space.

Electrical planning is critical for a workshop garage. A standard garage with basic lighting and a few outlets is wired with one or two 15-amp circuits. A workshop needs substantially more: a dedicated 20-amp circuit for each major tool (table saw, planer, welder, air compressor), GFCI-protected outlets every 4 feet along the workbench, overhead task lighting at the bench and tool stations, and ideally a sub-panel (60 to 100 amp) fed from the main house panel to provide capacity for current and future tool additions. In Dieppe, all electrical work requires a permit and must be done by a licensed electrician — budget $2,000 to $4,500 for a proper workshop electrical package including sub-panel installation.

Insulation and heating matter year-round in Dieppe's climate. An uninsulated workshop is usable maybe five or six months of the year. To work comfortably through a Dieppe winter, insulate walls to R-20 minimum and the ceiling to R-32 or higher, install a vapour barrier, and add a gas unit heater (30,000 to 60,000 BTU) or electric heater sized for the space. Heating a workshop zone in a 24x32 garage costs roughly $2,500 to $5,000 for the heater, gas line, and installation. Proper ventilation is equally important — sawdust, finishes, welding fumes, and general shop air quality all require either a dust collection system, an exhaust fan, or both.

Flooring in the workshop zone benefits from a smooth, sealed concrete finish or an epoxy coating that makes sweeping easy and reduces dust. If you plan to stand at a workbench for extended periods, anti-fatigue mats over the concrete make a significant difference in comfort.

Designing a garage with integrated workshop space is best done with an experienced builder who can optimize the layout for your specific needs, ensure the foundation and electrical are sized appropriately, and navigate the City of Dieppe's building permit requirements. Need help finding a professional garage builder? New Brunswick Garages can match you for free.