The real costs a multiplex project funds
A multiplex budget is more than the price of the land and the building. A full budget has several parts, and each one needs money set aside. If you plan for only the obvious costs, you will run short.
The main groups are land, hard costs, soft costs, financing costs, a contingency for surprises, and marketing and sales. Below we walk through each one, with extra attention to the two that people forget most.
- Land: the price to buy the lot.
- Hard costs: the physical build (materials and labour).
- Soft costs: drawings, approvals, fees, insurance, and professional help.
- Financing costs: loan interest and lender fees.
- Contingency: money held back for surprises.
- Marketing and sales: getting the homes sold.
Hard costs: the physical build
Hard costs are what most people picture when they think of building. This is the money that turns a plan into a real structure: the concrete, the framing, the roof, the wiring, the plumbing, the finishes, and the labour to put it all together.
Hard costs are usually the largest single part of the budget. Get quotes from builders in writing so this number is based on real prices, not a guess.
Soft costs: the part people forget
Soft costs are everything you pay for that is not the physical building. They are easy to overlook because you do not see them in the finished home, but they are real money and they add up.
Leave these out and your budget will be wrong from the start. Ask your professionals for their fees in writing early, so you can plan for them.
- Architectural and design drawings.
- Municipal approvals and permit fees.
- Engineering and survey work.
- Insurance during the build.
- Legal, accounting, and other professional help.
Financing costs and contingency
Financing costs are what the money itself costs you. This is the interest on your construction loan plus any lender fees. The longer the build takes, the more interest you pay, so delays cost real money.
Contingency is the second cost people forget. It is a pot of money set aside for surprises: a price rise, a delay, or a problem found once work starts. A common practice is to hold back a share of the build cost as contingency. If you never need it, that money simply improves your result. If you do need it, it keeps the project alive instead of stalling.
Building a budget that holds
A budget holds when it is built on real quotes, not hopeful guesses. Get written prices for the build, ask your professionals for their fees, and confirm your loan interest with the lender. Add every group listed above, including soft costs and contingency.
As a rough guide as of 2026, conventional bank construction loans often want the borrower to fund 25% to 40% of the project cost from their own equity. Some BC credit unions lend up to about 80% of project cost with interest-only payments during the build. These numbers change with the market and with each lender, so treat them as a starting point, not a promise.
Why a cushion between cost and value matters
Add up every cost and you get your total project cost. Compare that to what you expect the finished homes to be worth. The gap between the two is your cushion, and it is where your profit and your safety live.
If the cushion is thin, a small surprise can wipe it out and turn a profit into a loss. A healthy cushion gives you room for costs to rise or values to soften and still come out ahead. If your numbers only work when everything goes perfectly, the project is too risky. None of this is financial advice, so review your full budget with a professional before you commit.