Custom Home Cost Calculator
Indicative range by market and tier, plus the categories a per-square-foot number never includes.
Multiplies an indicative per-square-foot band by your area and adds the cost categories a construction quote leaves out — land, servicing, soft costs, financing, landscaping and GST. It returns a range rather than a figure, because the inputs cannot support more precision than that.
Custom Home Cost Calculator
$1.83M — $2.74M
4,000 sq ft in Calgary and area at the True custom tier, plus the categories you ticked, plus 10% contingency. Excludes land and GST.
The spread between the two figures is the honest part. If it feels uncomfortably wide, that is an accurate reflection of how much is undecided at this stage — and a reason to get a builder onto your specific lot before you commit to anything.
- It is not a quote, not a budget, and not surveyed data. It is arithmetic on indicative bands.
- Design complexity dominates cost and the tier selector is a crude proxy for it. A simple large house can cost less than a complicated smaller one.
- Site conditions are not modelled at all beyond the servicing toggle. On a difficult parcel they can rival the house cost.
- The only number that means anything for your project is a priced set of drawings for your specific lot.
The problem it solves
This is the orientation tool: it tells you which order of magnitude you are in, and — more usefully — what you have forgotten to budget.
The output is deliberately a wide range. The spread between the two figures is the honest part, and if it feels uncomfortably wide, that is an accurate reflection of how much is undecided at this stage.
How the arithmetic works
Bands by market and tier
Per-square-foot bands come from the market records and carry the same editorial-estimate framing as the market pages. Tiers describe design complexity and finish, not builder quality.
The categories people forget
Everything ticked adds its own low and high range to the total. These are the lines that turn a budget into a surprise, and most first budgets contain about six of the seventeen.
Contingency
Applied to both ends of the range. Hold it separately from anything inside the builder’s number and treat it as spent.
Questions
Why is the range so wide?
Because at this stage the design is not settled, and design complexity is the dominant cost driver. Narrowing the range requires decisions, not a better calculator. A narrower range from a tool like this would be false precision.
Can I use this to make a land offer?
Use it to work out whether a parcel is plausibly within reach. Do not use it to set an offer price. Get a builder onto the specific parcel and get the site work and servicing priced first — that is the part that varies most and the part this tool models least well.
- Canadian Home Builders’ Association — cost of building — consulted August 6, 2026
- Canada Revenue Agency — GST/HST and new housing — consulted August 6, 2026
External sources are cited so you can check them. Regulations change; confirm anything you intend to rely on with the issuing authority directly.
A tool narrows the question. It does not answer it.
Every figure here depends on inputs only your specific parcel and your specific builder can supply. Tell us what you are building and we will point you at the research that applies.