Construction Financing in Nova Scotia: Draws, Holdbacks, and the Builders' Lien Rules

A construction mortgage is not a single lump sum. It is a staged instrument: a lender commits to a total amount, then releases it in tranches ("draws") as the building physically comes out of the ground. Layered on top is a statutory holdback that Nova Scotia law requires on every construction contract, and a set of lender conditions that are stricter than for a finished-home purchase. If you are building anything from a backyard suite to a serviced multi-unit on land you own, understanding how these three pieces interact is what keeps a project solvent through the build.

Helio is a real-estate development company in Halifax. We compute what a parcel can support, then develop it end-to-end on land our clients own, with construction delivered by established builders. We don't originate mortgages, and the figures below are not ours — they're the current rules from the lenders, the federal and provincial governments, and Nova Scotia's Builders' Lien Act. We've cited each one to its primary source so you can verify it. This is a feasibility-stage overview, not legal or lending advice; confirm specifics with your lawyer and lender.

How draws work

Under a construction mortgage, you don't receive the full approved amount at closing. Funds are advanced in stages, and each advance is gated by an on-site inspection (typically by an appraiser or the lender's inspector) confirming that a defined construction milestone has been reached and that the work conforms to the approved plans. Common milestones are excavation and foundation, the building closed-in and weather-tight, mechanical and interior rough-ins, interior finishing, and final completion ready for occupancy.

Two practical consequences follow from this structure:

• Draws lag your spending. The schedule is keyed to milestones, not to the dollars you've actually laid out to reach them. You generally have to pay for a stage's work before the corresponding draw is released, so you need working capital — cash reserves, a line of credit, or interim arrangements with your builder — to bridge the gap between paying trades and receiving the advance.
• You pay interest only on what's drawn. During the build, most construction mortgages are interest-only, and interest accrues only on the cumulative amount advanced to date. Your carrying cost rises as the draws stack up, and converts to principal-and-interest only when the loan rolls over to a permanent ("take-out") mortgage at completion.

That conversion to a permanent mortgage is its own gate. In Nova Scotia, occupying most new buildings requires an occupancy permit, and an occupancy permit in HRM requires a valid building permit and a passed final inspection — it will not be issued while items such as a final lot-grading certificate are outstanding [1]. The take-out mortgage typically can't fund until the building is legally occupiable, so the final draw, the occupancy permit, and the permanent financing are tightly coupled at the end of a build.

The holdback: what Nova Scotia's Builders' Lien Act actually requires

This is the area where popular construction-financing write-ups most often get the Nova Scotia rules wrong, so it's worth quoting the statute.

Under the Builders' Lien Act (RSNS 1989, c. 277), the person primarily liable on a construction contract must deduct from payments and retain 10 per cent of the value of the work, service and materials [2]. That holdback is not optional and it is not a lender's invention — it is a legal mechanism that protects an owner against liens from unpaid subcontractors and suppliers. A subcontractor who isn't paid by the general contractor can register a lien against the property even if the owner has paid the contractor in full; the 10% holdback creates a fund the owner can use to satisfy those claims.

The timing matters, and it is not 45 days:

• The owner must retain the 10% holdback for 60 days after the contract is substantially performed [2].
• A "contract is substantially performed" when two tests are both met: the work is ready for use or being used for its intended purpose, and the work remaining can be completed or corrected for not more than 2.5 per cent of the contract price [2].
• A registered lien ceases to exist 105 days after the work or service has been completed or the materials were furnished [3]. That 105-day window is the period within which an unpaid party must register and then act on a lien before it lapses.
• The retained holdback may be paid out after the statutory periods expire, provided no proceedings to enforce a lien have been commenced in the meantime [2].

In practice that means an owner (or the lender administering the holdback) keeps the 10% reserve, watches the lien-registration window, and — before releasing the final money — confirms through a title search at the Land Registration Office that no liens stand against the property. Many owners also obtain a statutory declaration from the contractor that all subcontractors and suppliers have been paid. The Act was amended in 2017 to add, among other things, a requirement that the owner post a notice of substantial performance (including on the Construction Association of Nova Scotia's website) within 10 days of the contract being substantially performed, which starts the clock cleanly [2].

For a multi-unit build with many trades, the holdback discipline is the same — it just compounds. The more trades on site, the more potential lien claimants, and the more the 10% reserve is doing its job.

What lenders require for a construction mortgage

Because a construction loan funds an asset that doesn't exist yet, lenders underwrite it as higher-risk than a finished-home purchase and ask for more. The exact thresholds vary by lender and are not fixed by statute, but the categories are consistent.

Financial profile. Expect to document income, employment, existing debts, and reserves, since a construction loan often overlaps with your current housing costs. Lenders look for a debt-service ratio within their limits and for liquid reserves beyond the down payment to absorb cost overruns or schedule slippage. The specific minimum credit score and ratio thresholds are lender-set, so confirm them with your prospective lender rather than relying on a published rule of thumb.

Equity and land. Construction financing generally requires more equity than a standard purchase. Where you already own the land, that equity typically counts toward your contribution — a meaningful point on a feasibility basis, because land value is often the largest piece of a Nova Scotia project's capital stack before vertical construction even begins.

Project documentation. Lenders fund against a plan. You'll generally need a fixed scope and budget, stamped/engineered drawings where required, a realistic schedule, the building permit (or evidence it's in hand before construction starts), and a draw schedule the lender agrees to in advance. Incomplete documentation is the most common cause of approval delay.

The builder. The contractor's track record is part of the lender's risk assessment. Expect to provide the builder's credentials, liability insurance, and workers' compensation coverage, plus references on comparable projects. For an owner directing their own build, lenders scrutinize relevant experience and project-management capacity more heavily.

It's worth being clear about a development firm's role here, because the financing literature often blurs it. Helio is not the builder and we publish no construction price of our own. We do the feasibility and development work — establishing what the parcel can legally and physically support, structuring the project, and coordinating delivery through established builders — and a clearly defined scope, budget, and schedule is exactly the documentation a construction lender wants to see. Where pricing enters a feasibility model, we use official and market figures (CMHC, Altus, Statistics Canada) and cite them, rather than asserting a number.

How the tax and rebate picture changes the financing math

A construction lender's underwriting is only half the capital question. For purpose-built rental in Nova Scotia, several current federal and provincial measures materially change a project's net cost and therefore its financeability. Each is current as of 2026-06-22.

• HST is 14% on new construction. Nova Scotia's HST dropped from 15% to 14% (5% federal + 9% provincial) effective April 1, 2025 [4]. It applies to construction cost on top of the hard build.
• Purpose-built rental gets the GST/HST back. The federal Purpose-Built Rental Housing rebate refunds 100% of the GST / 5% federal portion of HST, with no phase-out, up to $35,000 per qualifying unit [5]; Nova Scotia mirrors it with a 100% rebate of the 9% provincial portion [6]. For qualifying new rental, that effectively removes HST from the build — a large swing in the financing model. (Housing that doesn't qualify for the enhanced rebate, such as condos, falls back to the base New Residential Rental Property rebate of 36% of the federal portion, capped at $6,300/unit and phasing out above $350,000 FMV [7].)
• Long-term residential rent is HST-exempt. Once occupied, leases of at least one month as a place of residence are an exempt supply — no HST on the rent, and no input tax credits on related inputs [8]. That asymmetry (tax on the build, exemption on the rent) is exactly why the construction-stage rebates above matter so much.

These are not lending terms, but they are inputs to the same pro forma a lender will test, and to the feasibility model a developer runs before committing.

CMHC programs for purpose-built rental

For projects of five or more rental units, two CMHC instruments are commonly part of the construction-financing conversation, and they are frequently confused with one another:

• The Apartment Construction Loan Program (ACLP) — the renamed Rental Construction Financing initiative — is a direct, low-interest, fully repayable construction loan. Under the standard rental stream, loans start at a $1 million minimum, can cover up to 100% of loan-to-cost for the residential component (75% non-residential), lock a fixed rate at first advance, and allow up to a 50-year amortization, for projects of at least 5 units [9].
• MLI Select is mortgage loan insurance, not a loan. It awards points across affordability, accessibility, and energy efficiency to unlock higher leverage and longer amortization — for example, 50 points can reach up to 95% loan-to-cost on new construction with up to 40-year amortization, scaling to up to 50-year amortization at 100 points [10]. Under the premium schedule effective July 14, 2025, 50/70/100 points earn 10%/20%/30% premium discounts respectively [11].

They are different instruments — a construction loan versus loan insurance — and can be used together [12]. For a multi-unit feasibility study, which one (or both) a project pursues changes both the draw structure and the permanent-financing terms, so it's a decision made early, not at the end.

Putting it together at the feasibility stage

For a Nova Scotia build, the financing question is really three questions that have to be answered together:

1. Cash flow during the build — a milestone-driven draw schedule means you fund stages before you're reimbursed, so reserves or interim financing aren't optional.
2. The statutory holdback — 10% of the value of the work, retained for 60 days after substantial performance (the 2.5%-to-complete test), with liens ceasing 105 days after work is completed [2][3]. Build that reserve and that timeline into the schedule from the start.
3. The net cost — HST at 14%, less the purpose-built rental rebates where applicable, against the right CMHC instrument, is what determines whether the project pencils and how much financing it can carry [4][5][6][9][10].

None of this is a reason not to build — Nova Scotia recorded 8,732 housing starts in 2025, up 31%, with the Halifax CMA at 7,000 starts [13]. It is a reason to model the capital stack carefully before committing. A development firm's job at the front end is precisely that: to establish what a parcel can support and to structure the project so the financing, the holdback timeline, and the tax position all line up before the first draw is requested.

Sources

1. Halifax Regional Municipality — Application to Occupy (per Nova Scotia Building Code Act). https://www.halifax.ca/home-property/building-development-permits/commercial-mixed-use-building-permits/application-occupy
2. Builders' Lien Act, RSNS 1989, c. 277, s. 13 (holdback: 10% of value of work retained 60 days after substantial performance; substantial performance test ≤ 2.5% of contract price; notice of substantial performance). Government of Nova Scotia / Nova Scotia Legislature. https://nslegislature.ca/sites/default/files/legc/statutes%20HTML/builders%27%20lien.htm
3. Builders' Lien Act, RSNS 1989, c. 277, s. 26 (a registered lien ceases to exist 105 days after the work or service has been completed). https://nslegislature.ca/sites/default/files/legc/statutes%20HTML/builders%27%20lien.htm
4. Canada Revenue Agency — GST/HST Notice 342, Nova Scotia HST Rate Decrease (14%, effective April 1, 2025). https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/notice342/nova-scotia-hst-rate-decrease-questions-answers-general-transitional-rules-personal-property-services.html
5. Canada Revenue Agency — GST/HST Purpose-Built Rental Housing (PBRH) Rebate (100% federal portion, up to $35,000/unit). https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/purpose-built-rental-housing.html
6. Government of Nova Scotia, Department of Finance — Purpose-Built Rental Housing Rebate (100% of the 9% provincial portion). https://novascotia.ca/finance/en/home/taxation/tax101/harmonizedsalestax/purpose-built-rental-housing-rebate.html
7. Canada Revenue Agency — GST/HST New Residential Rental Property Rebate (36% federal portion, max $6,300/unit, nil at FMV ≥ $450,000). https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/new-residential-rental-property-rebate.html
8. Excise Tax Act, RSC 1985, c. E-15, Schedule V, Part I, para 6 — long-term residential rent is an exempt supply. https://laws-lois.justice.gc.ca/eng/acts/e-15/page-120.html
9. CMHC — Apartment Construction Loan Program: Standard Rental Housing (min $1M; up to 100% LTC residential; up to 50-yr amortization; min 5 units). https://www.cmhc-schl.gc.ca/professionals/project-funding-and-mortgage-financing/funding-programs/all-funding-programs/apartment-construction-loan-program/standard-rental-housing
10. CMHC — MLI Select (points-based multi-unit mortgage loan insurance; leverage/amortization tiers). https://www.cmhc-schl.gc.ca/professionals/project-funding-and-mortgage-financing/mortgage-loan-insurance/multi-unit-insurance/mliselect
11. CMHC — Notice: CMHC to Update Multi-Unit Mortgage Loan Insurance Premiums (50/70/100 points = 10%/20%/30% discount, effective July 14, 2025). https://www.cmhc-schl.gc.ca/media-newsroom/notices/2025/cmhc-to-update-multi-unit-mortgage-loan-insurance-premiums
12. CMHC — Mortgage Loan Insurance for Multi-Unit and Rental Housing (ACLP vs MLI Select are distinct instruments). https://www.cmhc-schl.gc.ca/professionals/project-funding-and-mortgage-financing/mortgage-loan-insurance/multi-unit-insurance
13. CMHC — Housing starts, December 2025 / full-year 2025 (NS 8,732 starts, +31%; Halifax CMA 7,000, +38%). https://www.cmhc-schl.gc.ca/media-newsroom/news-releases/2026/housing-starts-december-2025