Construction Financing Solutions in BC: A 2026 Guide for Builders and Homeowners

Building in BC? Learn how construction mortgages, progress draws, lien holdbacks and 2026 GST rebates work, and how a BC mortgage broker can fund your build.

The right construction financing in BC can be the difference between a build that finishes on time and one that stalls at framing. Whether you’re putting up a custom home in the Fraser Valley, adding a laneway house in Surrey, or turning a single-family lot into a fourplex under BC’s new multiplex zoning, how your money flows matters as much as how much you can borrow.

Construction lending works very differently from a standard purchase mortgage. Fewer lenders offer it, the paperwork is heavier, and the funds arrive in stages rather than all at once. This guide explains the construction financing solutions available in BC in 2026, how the draw process works under BC law, and the federal programs that can lower your costs.

What is construction financing?

A construction mortgage is a loan that funds a build in stages, called progress draws, as work is completed and inspected. With a regular mortgage, the lender pays out the full amount on closing day against a finished home. With construction financing, the lender is lending against a home that doesn’t exist yet, so it releases money only as the property’s value is created.

Three differences matter most:
• Funds arrive in draws. The lender advances money at set milestones after an inspector or appraiser confirms the work is done.
• You pay interest only on what’s been drawn. During the build, payments are usually interest-only on the outstanding balance, not the full approved amount.
• Your money goes in first. Lenders typically expect your down payment and equity to be spent on the project before their first advance.

Once the home is complete and occupancy is granted, the construction loan converts to, or is replaced by, a regular long-term mortgage.

Types of construction financing solutions in BC
1. Progress draw mortgage
2. Completion mortgage
3. Owner-builder financing
4. Suite, laneway or garden suite financing
5. Multiplex construction loan
6. Private or bridge construction loan

The best structure depends on who is building, what you’re building, and whether you’ll live in it, rent it or sell it.

Progress draw mortgages:
This is the most common construction mortgage for homeowners. The lender approves a total amount based on the land value plus the build budget, then releases it in stages, usually four to six draws, as an inspector confirms progress.

Completion mortgages:
If a builder is carrying the construction risk and you’re buying the finished product, you need a completion mortgage. You pay a deposit up front and the lender funds the full amount on completion, so there’s no draw process to manage.

Owner-builder financing:
In BC, anyone building a new home for their own use without a licensed builder must first pass an exam and get an Owner Builder Authorization from BC Housing. Lenders view these files as higher risk, so expect to show a detailed budget, a realistic schedule and, ideally, prior building experience. Fewer lenders participate, which is where a broker’s lender relationships help most.

Secondary suites, laneway houses and garden suites:
BC’s push for gentle density means more homeowners are adding rental units. Insured refinancing can now cover the cost of adding a suite (details below), and rental income from the new unit may help you qualify.

Multiplex and small-scale multi-unit builds:
Provincial zoning changes now allow more units on many single-family lots across BC. These projects are financed more like small developments: lenders look closely at your cost-to-complete budget, builder track record, and the plan to sell, strata or rent the units.

Private and alternative construction lenders:
When a bank’s timelines or criteria don’t fit, private lenders and mortgage investment corporations can fund faster and more flexibly, including mid-construction rescue financing for projects that ran over budget. The trade-off is higher rates and fees, so this works best as a short-term bridge with a clear exit to conventional financing.

How progress draws work in BC
Every draw follows the same cycle: work gets done, an inspector confirms it, and the lender advances the next portion minus BC’s mandatory 10% lien holdback.
1. Approval and first advance. The lender approves the total loan based on land value plus the construction budget. Your own funds typically cover the land and early costs before the first draw.
2. Work reaches a milestone. Common stages are foundation, framing and lock-up, mechanical rough-ins, drywall, and completion.
3. Inspection. The lender’s inspector or appraiser confirms the percentage complete. Many lenders charge a fee for each draw.
4. Advance, less holdback. Funds are released for the completed work, with 10% held back as required under BC’s Builders Lien Act.
5. Final draw and holdback release. After completion and occupancy, the remaining funds and holdback are released, and the loan moves to a regular mortgage.

Understanding BC’s 10% lien holdback
Under BC’s Builders Lien Act, an owner must hold back 10% of the contract price until 55 days after the general contract is substantially completed, abandoned or otherwise ended. Trades and suppliers generally have 45 days after completion to file a lien. If no liens are filed in that window, the holdback can be paid out.
BC uses a multiple holdback system, so contractors must also hold back 10% from their own subcontractors. For contracts over $100,000, the owner generally needs a separate holdback trust account administered jointly with the general contractor. Build the holdback into your cash-flow plan from day one, and have your lawyer confirm how your lender will handle it.

How to qualify for a construction mortgage in BC
Lenders qualify you on the finished project, but they need proof the project will actually get finished. Expect a more detailed file than a standard purchase.

What lenders usually ask for:
• Proof of income and the usual credit review, including the federal stress test
• Land title or a purchase agreement for the lot
• Approved building permit and stamped plans
• A detailed cost breakdown and construction schedule
• A signed fixed-price or cost-plus contract with a licensed builder, or your Owner Builder Authorization
• Proof of home warranty coverage (or owner-builder disclosure)
• An “as-complete” appraisal estimating the finished value
• Builder’s risk insurance for the duration of the build

Down payment and equity. Owning your lot outright is the single biggest advantage, because land equity often counts toward your down payment. If you’re buying land and building at the same time, plan for a larger cash contribution up front, since lenders want your funds in before theirs.

Contingency. Budget an extra 10% to 15% for overruns. A lender can’t advance more than it approved, so cost overruns come out of your pocket unless you’ve planned for them.

6 construction financing mistakes to avoid
1. Starting work before financing is approved. Many lenders won’t fund work completed before their approval and first inspection.
2. Underestimating the cash you need up front. Your funds go in first, and every draw is short by the 10% holdback until the end.
3. Skipping a contingency. Material and labour costs move during a build. Without a 10% to 15% buffer, overruns fall on you.
4. Mismatched draw schedules. If your builder expects payment on dates your lender’s draw stages don’t match, cash flow breaks. Align the contract and the draw schedule before signing.
5. Arranging a suite refinance too late. Insured suite refinancing is based on the post-renovation value, so it needs to be set up before the work begins.
6. Going straight to one bank. Construction lending criteria vary widely between banks, credit unions and alternative lenders. Shopping the file can mean a better rate, more draws or a higher approved amount.
Frequently asked questions about construction financing in BC

How does a construction mortgage work in BC?
A construction mortgage releases funds in stages as your build reaches set milestones. An inspector confirms each stage before the lender advances the next draw, less a 10% lien holdback required under BC’s Builders Lien Act.

How much down payment do I need to build a house in BC?
It depends on the lender, your credit and whether the mortgage is insured. Land you already own often counts as equity toward your down payment. Expect lenders to want your own funds spent on the project before their first draw.

Can I get a construction loan as an owner-builder in BC?
Yes, but fewer lenders offer it. You’ll need an Owner Builder Authorization from BC Housing, which requires passing an exam, plus a detailed budget and schedule. Credit unions and alternative lenders are often the best fit.

Do I pay interest during construction?
Usually yes, but only on the amount drawn so far, not the full approved loan. Payments are often interest-only until the home is complete.

Can I finance a laneway house or secondary suite?
Yes. Insured refinancing can fund a new suite at up to 90% of the home’s post-renovation value, up to $2 million, and some lenders will count projected rental income toward qualifying.

Is the first-time buyer GST rebate available on new builds in BC?
Yes. Eligible first-time buyers can get a full rebate of the 5% GST on new homes up to $1 million, and a partial rebate on homes up to $1.5 million, to a maximum of $50,000.

Get your BC construction financing right from day one
Construction financing rewards early planning. The best time to talk to a mortgage broker is before you sign a builder contract or break ground, when there’s still room to match your draw schedule, budget and lender to the project.

As a Surrey-based mortgage broker with Dominion Lending Centres, I work with banks, credit unions and alternative lenders across BC to find construction financing that fits your build, whether it’s a custom home, a laneway house or a multiplex.

Ready to talk about your project:

Satinder Grewal
Mortgage Broker – DLC A Better Way
Satinder.Grewal@DominionLending.ca
(604) 813-5326

This article is for general information only and isn’t financial, legal or tax advice. Program rules, rates and lender criteria change; confirm details for your situation before making decisions.

Sources
• Builders Liens, Clicklaw Wikibooks
• Homeowner Protection Act information, BCFSA
• First-time home buyers’ GST/HST rebate, Canada Revenue Agency
• Excise and GST/HST News No. 122, CRA
• Delivering the Boldest Mortgage Reforms in Decades, Finance Canada
• Feds double secondary suite loan amount, Investment Executive
• Canada Secondary Suite Loan Program status, nesto
• BC Secondary Suite Incentive Program, UBCM
• Grow a Suite Grant Program, City of West Kelowna