Basement Specialist vs General Contractor: What to Check Before You Hire Either

Why basement conversions are different from most renovation scopes

A kitchen or bathroom renovation touches finishes, cabinetry, and mechanical rough-ins inside a space that is already legally habitable. A basement conversion into a secondary suite or finished living space is closer to a small building project layered inside an existing foundation. It usually needs a secondary suite permit or building permit, a fire separation assembly between floors, an electrical subpanel, and in most cases at least one egress window cut through a concrete or block foundation wall. Get any one of those wrong and the result is not a cosmetic problem. It is a suite that fails final inspection, or worse, one that passes and then leaks or floods.

That is why the choice of builder matters more here than it does on a kitchen refresh. A contractor's general renovation experience does not automatically transfer to foundation-level waterproofing or code-compliant egress cutting, because those are narrower skills built through repetition on that specific scope, not through renovation volume generally.

Permit handling for a secondary suite

A legal secondary suite in North Vancouver needs its own permit review, separate from a general building permit, and the City of North Vancouver and the District of North Vancouver each apply requirements differently. The City, for example, requires a separate electrical subpanel for any new secondary suite as a non-negotiable baseline, and the District has its own requirements around exterior access and unit separation. A builder who has pulled several secondary suite permits in your specific municipality in the last two years will already know which drawings the reviewer expects on the first submission, and that experience shortens the review cycle in a way that generic renovation experience does not.

Ask directly: who is named on the permit application, the homeowner or the contractor, and how many secondary suite permits has this builder closed out with a final occupancy sign-off in the last two years, broken out by City versus District if the project sits in one specifically. A vague answer, or an answer that lumps all renovation permits together without separating out secondary suites, is worth pressing on before signing a contract.

Waterproofing: the scope most quotes underprice

Basement waterproofing is not one task, it is a set of related details: exterior or interior perimeter drainage, damp-proofing or membrane coating on the foundation wall, proper grading and downspout discharge at the surface, and a sump system where the water table or slope requires one. A builder who treats waterproofing as a single line item, rather than as a scope with several distinct decisions behind it, is more likely to miss one of them.

The North Shore's rain volume and, on sloped lots, the water pressure against a below-grade wall make this scope higher-stakes here than in a drier or flatter market. A perimeter drain that was adequate in 1975 is very often failed or undersized by 2026, and any basement conversion that finishes a previously unfinished space should include an honest assessment of the existing drain's condition before drywall goes up over it, not after a wet winter reveals the problem.

Ask specifically what waterproofing method is being specced, whether the existing perimeter drain will be inspected or excavated and confirmed before finishing begins, and what the contract says happens if the drain is found to be failed once the wall is opened. A specialist basement builder should have a standard answer to this, built from repetition. A general contractor can have an equally good answer, but it needs to be an answer, not a shrug.

Egress window cutting: a narrow skill with real consequences

Every bedroom in a secondary suite needs a code-compliant egress window, sized and positioned so a person can climb out in an emergency and a firefighter can climb in. On a basement without an existing window opening large enough, that means cutting a new opening through a concrete or block foundation wall, installing a window well, and detailing the drainage at the base of that well so it does not become a place for water to collect against the foundation.

This is concrete-cutting work with structural implications, not a carpentry task. Cutting too large an opening without accounting for the load path above it can require a lintel or additional structural support that was not in the original quote. A builder who has done this repeatedly on North Shore foundations, which vary from poured concrete to older block construction depending on the house's age, will price the structural support correctly the first time rather than discovering the need for it mid-cut.

Ask how many egress window openings the builder has cut through an existing foundation, specifically, not how many basement renovations they have completed generally. The two numbers are not the same, since not every basement conversion needs a new opening if an existing window is already large enough.

Fixed-price quoting, and what an allowance actually protects you from

A fixed-price quote means the contractor commits to a total number and absorbs cost overruns within the defined scope. A cost-plus quote means you pay actual costs plus a markup, typically 15 to 25 percent, so the final number depends on what actually happens once the walls are open. Neither structure is automatically better, but you should know which one you are signing, and a basement project is exactly where that distinction matters most, because foundation conditions are the single biggest source of surprise cost on this type of job.

The honest way to handle foundation uncertainty in a fixed-price contract is a stated allowance: a specific dollar rate for extra excavation, rock removal, or drain replacement if conditions turn out worse than expected, agreed to in writing before the wall opens rather than negotiated on the spot once it has. A quote with no allowance for foundation conditions is either padded to cover a worst case that may never happen, quietly inflating the number you are comparing against other quotes, or it is a change order waiting to happen the first time the excavator hits something unexpected.

In BC, a 10 percent Builders Lien Act holdback applies to construction contracts generally, and a deposit request over 20 percent of contract value is worth treating as a red flag regardless of which type of builder is asking for it.

How RealDream approaches basement work

RealDream is a general renovation contractor, not a basement-only specialist. Basement conversions and secondary suites are a regular part of our North Shore work alongside kitchens, whole-home renovations, and additions, and we quote them fixed-price with a stated allowance rate for foundation and drainage conditions found once the wall is open. The owner is on site through the permit and construction phases, and we handle the secondary suite permit application directly with the City or District rather than leaving that step to the homeowner.

We do not have a basement-only track record measured in the hundreds of units the way a specialist firm focused exclusively on that scope might. What we bring instead is the ability to carry a project that starts as a basement conversion into a broader scope, an electrical service upgrade for the whole house, a kitchen renovation upstairs, an addition later, without switching contractors partway through. Whether that trade-off favours a specialist or a generalist depends on how contained the project is expected to stay.

Disclosure

This comparison describes general characteristics of basement-only specialist firms and general contractors as categories, not a specific named competitor, since we could not independently verify enough claims about any single North Shore basement specialist to name one fairly. The questions and answers above are the ones we recommend asking any builder, including us, before signing a basement renovation contract.