There's a Mortgage for ThatHow Financing an Infill Project Actually Works
Most families considering building more housing on their lot aren't blocked by the idea, they're blocked by the details.
They've done the mental work of imagining a future where everyone has their own space and stability. They're past "should we?" and into "how does this actually work?" and somewhere in that research, they land on the financing question, and it quietly blurs the vision.
The question underneath the question
Most families researching this aren't really asking "which mortgage product?" They're asking something closer to: Is this actually doable for a family like ours?
The answer, for most of the families we work with, is yes, but the right path depends on what you're building, who you're building it for, and what kind of ownership arrangement makes sense long-term.
Over the years, we have worked with Vancity to help hundreds of Smallworks clients finance their builds—creating pathways to support each build for unique families and scenarios. Today, Vancity has created financing products that are designed specifically for people in your shoes.
Let's look at some of the financing products* available from Vancity to fund your new build.
*This post reflects publicly available information from Vancity. Mortgage details, rates, and eligibility requirements are subject to change. We always recommend speaking directly with a Vancity mortgage specialist to confirm current terms for your specific situation. If you need help getting in touch with one, we can help you with that.
How Construction Financing Works
Before diving into specific products, there are a few realities worth understanding upfront. These aren't reasons to walk away, but definitely things to plan for.
You'll need cash upfront.
Lenders generally finance up to 75-80% of total construction and land value, meaning you need to cover the remaining cash flow yourself, or with a loan. On top of that, soft costs like permit fees and insurance often aren't covered by the loan, so your out-of-pocket expenses will need to be established and budgeted for.
You only pay for what you’ve used.
Construction financing works differently than a regular home mortgage. You don't borrow the full amount on day one and start paying it down. Instead, funds are released in stages as your build progresses. During construction, you only pay interest on what's been drawn so far, not the full loan. That said, construction mortgage payments are often interest-only, and rates are often higher than conventional rates, which reflects the added risk lenders take on during a project. It's worth factoring this into your budget planning.
You'll need a fixed-price contract with a licensed builder.
Most lenders won't fund DIY builds or open-ended projects. To access construction financing, you'll need a fixed-price contract with approved timelines and licensed professionals. This is actually one of the reasons working with an established builder like Smallworks makes the financing process smoother; lenders already know what to expect.
What happens to your construction mortgage once construction is over
Once the build is complete, your construction mortgage converts into a regular mortgage and you choose your rate, term, and amortization (up to 30 years). With Vancity, there's also a 120-day rate guarantee on pre-approval, which gives you room to breathe while permits and plans are being finalized.
Rental income changes what you can qualify for.
One detail worth knowing: if your build includes a rental suite, you can use the projected rental income to help you qualify for a larger mortgage. In Vancouver's market, that's not a small thing.
These are the foundational things to understand about borrowing to construct a home. Now let’s dive into some of the specific products Vancity offers for construction financing.
Financing a Laneway Home
The Product: Vancity's Laneway House Mortgage
Creating your laneway home starts with getting a construction mortgage. This sits alongside the existing mortgage rather than replacing it. The construction loan funds the build in stages, then is joined with your home mortgage on completion.
A laneway home is the most straightforward entry point into gentle density, which is part of why it tends to be where families look to build more room to live.
If your laneway home will be paid for entirely or in part by someone who doesn't own the property, there are options to divide the mortgage and ownership of your newly evolved property. Vancity was the first to offer a Mixer Mortgage: a product designed to facilitate special mortgage financing and set up a legal co-ownership agreement that clearly outlines what everyone’s financial responsibilities are.
With a Mixer Mortgage, you can customize how the property will be split ( i.e. 50/50, 60/40, 70/30) to co-own with family members while still maintaining separate mortgage rates, types, and terms.
If you transfer your mortgage to Vancity to add a laneway to your property (and mortgage), they offer a Laneway Homebuyers' Bundle: $750 toward closing costs and appraisal services, plus a preferred rate for qualifying applicants.
Financing a Multiplex
The Product: Vancity's Multiplex Construction Mortgage
This one is different in kind, not just in scale.
Vancity structures a multiplex construction mortgage across four phases to address different ownership/funding needs: land acquisition (if needed), pre-development, construction financing, and stratification. No incorporation required. No commercial lending. Personal-name financing throughout.
- Land Acquisition: If you don't already own the land, the process starts with securing a mortgage. Whether you previously owned the land or not, this is also the stage to consider a co-ownership agreement if you're building with family members or co-developers.
- Pre-Development: You'll work with a builder to develop budgets, blueprints, and permits. This is where your fixed-price contract takes shape.
- Construction Financing: With plans and permits in hand, this is where financing comes into play. This is where you will commence a construction mortgage that will be drawn in stages throughout the build.
- Stratification: If you are dividing ownership of the home, you will want to undergo legal stratification to separate the units.
Most families building for multiple generations assume they'll co-own the property — everyone on title, one mortgage, shared equity. That works for some families, but when you’re working with multiple units, it can get complicated. If you are building 3 or more units you may need a more permanent ownership solution where each household owns their own unit as an individual asset. Something they can build equity in. Something that's legally, unambiguously theirs.
What to do with this
If you're still in the "figuring it out" stage, that is the most important one, don’t rush it. Most families we work with come to us before they've sorted out the financing, and that's actually the right order. The build plan and the financing plan need to develop together, because decisions you make on one side affect the other.
If you want to take your project from an idea to a plan, we are here to help.



