Exterior Solutions
Basement Walkout Entrances
A separate entrance is what turns a finished basement into a legal secondary suite. It is also the single change that most affects what the space is worth.
Engineered project · Quote after feasibility review
What you get
- Provides the code-required egress a legal secondary suite depends on
- Adds daylight and direct access to an otherwise sealed space
- Waterproofing and drainage designed into the opening from the start
- Engineered, permitted, and inspected
What a walkout actually changes
A basement with an interior staircase and nothing else is part of the house above it. It can be finished, carpeted, and comfortable, and it is still a rec room.
A basement with its own exterior entrance is a separate unit. That single change is what makes a secondary suite possible, and it is why walkout installation is the highest-leverage structural project on this list. In a Nova Scotia rental market this tight, a legal one-bedroom suite in an existing basement is a substantial recurring return on a one-time cost.
There is also the plain liveability argument. Basements without direct access feel like basements. One with a door and daylight at the bottom of the stairs feels like a floor of the house.
The structural side
Cutting an opening in a foundation wall removes a section of the structure carrying the house.
An engineer determines the size of the opening the wall can accept and specifies the lintel: the beam spanning the opening that picks up the load the removed concrete was carrying. Before any cutting, temporary shoring takes the load. The opening is saw-cut, the lintel is set and bearing properly at both ends, and only then does the shoring come out.
This is not a place for improvisation, and we will not do the work without engineered drawings and a municipal inspection.
The drainage side, which is where walkouts fail
Here is what a stairwell is, hydrologically: a lined pit dug against your foundation, open to the sky, with a door at the bottom.
Every drop of rain that falls into it collects at the base. So does anything running off the surrounding grade. During a heavy Nova Scotia rain, that is a lot of water arriving at a threshold below the level of your basement floor.
Three things prevent that from ending in a flooded basement:
A drain at the base with a real discharge. A grated drain at the bottom of the stairs, tied into the footing drain, a sump, or daylight. What it must not be is a pipe that runs a metre and stops in gravel, which is what we find whenever we are called to a walkout that floods.
Grade sloped away from the top. The finished ground around the stairwell opening must fall away from it, so surface water is not being funnelled in from the yard.
Membrane on the retaining walls. The stairwell walls are foundation walls now, holding back saturated soil on three sides, and they need the same treatment as any other below-grade wall.
Add a proper sill pan and flashing at the door, and the space stays dry through a nor’easter. Skip them, and the first significant storm puts water through the door.
Planning for a suite
If the goal is a legal secondary suite, design for that from the beginning rather than discovering the requirements after the concrete is cured. Depending on your municipality, that generally means minimum ceiling height, which may mean lowering the floor, proper egress from any bedroom, fire separation between units, interconnected smoke alarms, and sometimes parking provision.
Sequencing all of it into one project is far cheaper than doing it in the wrong order.
Jobs like this
Basement Walkout Entrances in practice
Questions
About basement walkout entrances
Do I need a permit for a basement walkout?
Yes. Cutting an opening in a load-bearing foundation wall is structural work that requires a building permit, engineered drawings for the lintel, and inspections. Excavating a stairwell against the foundation may trigger additional requirements. If the objective is a legal secondary suite, that carries its own set of requirements for ceiling height, egress, fire separation, smoke alarms, and sometimes parking, which vary by municipality. We handle the permitting and design the work to meet the end goal rather than discovering a problem after the concrete is poured.
Will a walkout flood?
It will if it is built without proper drainage, and this is the most common failure we are called to fix. A stairwell is an open pit against your foundation with a door at the bottom. Every drop of rain that lands in it, plus anything running off the surrounding grade, collects there. It needs a drain at the base connected to a real discharge (a footing drain, a sump, or daylight), never a pipe that simply ends in the gravel. It also needs the surrounding grade sloped away from the top so surface water does not pour in, and membrane on the retaining walls. Built correctly, it stays dry. Built cheaply, it becomes a swimming pool with your basement door at the bottom.
Can any basement have a walkout added?
Most can, but not all. The determining factors are whether there is enough exterior grade drop to reach basement floor level without an unreasonable excavation, whether the wall in question can carry an opening, whether property setbacks allow a stairwell in that location, and whether services are in the way. A flat lot with a deep basement means a very deep stairwell, which is expensive and can be impractical. We assess feasibility before you spend anything on design.
Does a walkout add value to my home?
It is one of the highest-return basement projects, because it changes the legal category of the space rather than just improving it. A finished basement without separate egress is a rec room. The same basement with a code-compliant walkout can be a rental suite or an in-law apartment, and in the current Nova Scotia housing market that is a meaningful difference in both income and resale.
What about a window well egress instead?
In some cases an enlarged egress window is sufficient, and it is considerably cheaper than a full walkout. It can satisfy bedroom egress requirements and brings in daylight, but it does not give you a separate entrance, so it does not make a suite independently accessible. If the goal is a rentable unit, you need the walkout. If the goal is a legal bedroom, an egress window may be all that is required. See [window wells](/services/window-wells).
Further reading
More on basement walkout entrances
Where we do this work
Basement Walkout Entrances across mainland Nova Scotia
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(902) 555-0100