Adding a Basement Walkout in Halifax: Permits, Process and Cost Factors

A new door into the basement changes how the whole level works. It gives a basement suite its own front door, turns a dark rec room into space you can reach from the yard, and gives a bedroom a way out. It also cuts into the structure and digs a hole beside the house, so the permit and details matter.

Walkout or Walk-Up: Which One Are You Building?

A true walkout happens on a sloped lot. The ground at the back or side of the house is already at or near basement floor level, so the new door opens straight onto the yard with little or no stairwell.

A walk-up entrance (often still called a walkout) is what most Halifax houses need. The ground sits well above the basement floor, so we excavate a stairwell against the foundation, build retaining walls on both sides, pour steps and a landing, and cut a door opening through the foundation wall at the bottom.

Why Homeowners Add One

• A separate entrance for a basement suite. Tenants come and go without walking through the main house.
• Egress for a basement bedroom. An exterior door is one way to give a bedroom a compliant way out.
• Everyday access. Bikes, gear and garden tools go in and out without crossing the main floor.

A separate entrance is often a choice rather than a code requirement. HRM's Secondary Suite Info Sheet, which summarizes the National Building Code, says a separate means of egress is not required for units in a house with a secondary suite that share an egress facility, as long as that shared exit is protected as the code describes. Most owners still want the private door. Our guide on how to convert a basement to an apartment in Halifax covers the rest of the suite requirements.

Do You Need a Permit for a Basement Walkout in Halifax?

Yes. HRM requires a building permit when a renovation changes interior or exterior walls, and for structural repairs or changes. A new door cut through a foundation wall is both. HRM's exemption for replacing windows and doors only applies when there is no change to the size and location, so turning a basement window into a door is not exempt. If the walkout is part of a secondary suite, it goes on the suite's building permit. We cover the wider picture in permits for a basement renovation in Halifax.

Depending on the site, other HRM permits can come into play:

• Lot grading permit. HRM requires one for a retaining wall over 1 metre high on a serviced residential lot. Deep stairwell walls can reach that, so confirm with HRM whether yours counts.
• Blasting permit. Required before any blasting under By-law B-600, with an insured blasting contractor as prime contractor and a Grade Alteration permit applied for first.

HRM's renovation permit page asks for plans showing footings and foundation, framing for steps and stairs, a site plan with projections from the building and distances to property lines, and elevations showing exterior stairs, guards and handrails. A building permit expires two years from the date of issue.

Cutting the Foundation Opening

The foundation wall carries the house. Once you remove a section of it, the load above has to go around the opening, which means a header or lintel over the door and solid bearing on each side. Have a structural engineer size that, especially where floor joists or a beam land on that wall.

Poured concrete is cut with a wall saw, and the floor above is shored until the new lintel is in. Older Halifax homes with stone or block foundations take more care, because the wall around the opening has to be rebuilt and stabilized rather than simply cut. Check where the electrical, gas, water and sewer lines run before anyone picks a spot.

Nova Scotia Stair Code for a Walkout Stair

Since April 1, 2025, the Nova Scotia Building Code Regulations have adopted the National Building Code of Canada 2020, and the province's amendments do not change the Part 9 stair rules. For private stairs, meaning exterior stairs serving a single dwelling unit or a house with a secondary suite, the code sets:

• Rise: 125 mm minimum, 200 mm maximum per step
• Run: 255 mm minimum, 355 mm maximum
• Width: 860 mm minimum
• Headroom: 1,950 mm clear over the stair and landings
• Landings: at the top and bottom of each flight and where a door opens onto the stair, at least as wide as the stair, with the full swing of any door that opens toward the stair over the landing
• Handrails: not required on exterior stairs with 3 risers or fewer for a single dwelling unit, one handrail required above that, 865 mm to 1,070 mm high
• Guards: required on open sides where the drop is more than 600 mm, at least 900 mm high for this type of house where the walking surface is not more than 1.8 m above finished ground (1,070 mm otherwise), with openings that stop a 100 mm sphere

That guard rule matters at the top of a walk-up. The drop into the stairwell is usually well over 600 mm, so the open edges need a guard or a wall.

Drainage and Frost

A stairwell collects rain and snowmelt, and the door sits at the lowest point. Plan for a drain at the bottom landing, and grade the surrounding yard away from the opening. The code requires window wells to drain to footing level or another suitable location, and the same thinking applies here.

Where that drain goes matters. Halifax Water counts foundation drains, sump pumps and yard drains connected to the wastewater pipe as stormwater it wants out of that system. It wants stormwater directed overland away from the house, or to a stormwater lateral where one serves the property. In practice that often means the stairwell drain ties into the weeping tile and a sump.

Frost is the other enemy. The code ties footing depth for exterior concrete steps with more than two risers to its foundation depth rules, and retaining walls need footings that will not heave.

Setbacks and Side Yards

Many walk-ups end up in a narrow side yard. In the Regional Centre (peninsula Halifax and Dartmouth inside the Circumferential Highway), section 94 of the Land Use By-law allows uncovered steps and staircases in any required setback. Outside the Regional Centre, other land use by-laws apply, so confirm with HRM how your zone treats a below-grade stairwell and its retaining walls before you design around it.

Bedrock and Excavation

Many HRM lots have bedrock close to the surface. A walk-up means digging down to below the basement floor right beside the foundation, and rock changes the job: slower excavation, rock breaking, and sometimes blasting with its own permit. Nobody knows until the digging starts, so build contingency into the budget.

What Drives the Cost

• Walkout on a slope, or a full walk-up stairwell
• Depth of the dig, and whether you hit rock
• Poured concrete, block or stone foundation, and the opening width
• Engineering, shoring, and the lintel
• Retaining walls, steps and landing
• Drain, sump and tie-in to the weeping tile
• Guards, handrails, a canopy and lighting
• The exterior door, waterproofing and interior finishing
• Moving services, restoring landscaping, and permit fees

A walkout is rarely a project on its own. If it is part of a suite, see our cost of a legal basement suite in Halifax, or look at our basement apartment conversions.

Frequently Asked Questions

Do I need a permit for a basement walkout in Halifax?

Yes. Cutting a new door through a foundation wall is a structural change to an exterior wall, which requires an HRM building permit.

Do I need a permit for basement walkout stairs?

The stairs go on the same building permit, and HRM asks for them on the plans. A lot grading permit may also apply if a retaining wall is over 1 metre high.

Can I turn a basement window into a door without a permit?

No. HRM only exempts window and door replacements with no change to the size and location.

Does a basement suite need its own entrance?

Not always. HRM's secondary suite info sheet says a separate means of egress is not required where units share a protected egress facility. A private entrance is usually the better layout.

Talk to a Halifax Basement Contractor

Halifax General Contractors is a licensed, insured and WCB covered design-build contractor at 2569 Windsor St in Halifax. We handle design, engineering, permits and construction under one contract.

Book your free quote and estimate, or call (902) 454-2273 to talk through where a walkout could go on your house.