SR&ED Credits for Modular, Green, and Automated Construction in Canada (2026)

Reviewed by Bader A. Chowdry, CPA, CA, LPA on June 15, 2026

Most Canadian contractors think the Scientific Research and Experimental Development (SR&ED) program is for software companies and biotech labs. It is not. If your firm has wrestled a modular building system into tolerance, engineered a low-carbon concrete mix that had to perform in an Ontario winter, or integrated robotics and BIM into a site workflow that no supplier could hand you off-the-shelf, you have almost certainly done eligible experimental development. At Insight Accounting CPA, we see construction SR&ED go unclaimed more than in any other sector — and 2026 is the best year in a decade to fix that.

Does construction work actually qualify for SR&ED in 2026?

Yes — far more often than builders assume. SR&ED rewards the resolution of genuine technological uncertainty, not the type of building. A general contractor who develops a new prefabrication jig, a mechanical firm that prototypes an untested HVAC control sequence, or a developer piloting mass-timber connections all perform qualifying work when the outcome was uncertain and resolved through systematic experimentation. The trade label does not matter; the technical risk does.

What changed for SR&ED in 2026 — and why does it matter for builders?

The program just had its largest expansion in decades. Bill C-15 raised the enhanced-credit expenditure limit from $3M to $4,500,000, lifted the taxable-capital phase-out to $15M–$75M, extended the 35% refundable credit to eligible Canadian public corporations, and — critically for construction — restored eligibility for capital expenditures. Equipment and prototype assets that builders actually buy now count again.

How much is a construction SR&ED claim actually worth?

For a Canadian-controlled private corporation, the federal credit is 35% refundable on the first $4,500,000 of qualifying expenditure — real cash, even in a loss year. Stack Ontario’s 8% refundable OITC and the 3.5% ORDTC and a $500,000 qualifying spend can return well over $200,000. Typical construction claims at our firm run from $40,000 to $300,000 in combined federal and provincial refunds.

Which construction activities qualify

The five-question test from the CRA’s eligibility guidelines — rooted in Northwest Hydraulic Consultants Ltd. v. The Queen — asks whether there was technological uncertainty, a hypothesis, a systematic investigation, a technological advancement, and a contemporaneous record. Routine construction never qualifies; novel problem-solving routinely does. In practice, the qualifying work in construction clusters into four areas:

• Modular and prefabricated systems. Developing volumetric modules, panelized envelopes, or connection details whose structural performance, dimensional tolerance, or transport durability was uncertain and had to be validated through testing rather than catalogue specification.
• Green building technology. Formulating low-carbon or high-recycled-content concrete, engineering net-zero envelope assemblies, or integrating heat-recovery and building-automation systems where the performance under real Canadian climate loads could not be predicted from existing data.
• On-site automation and robotics. Adapting robotic layout, automated rebar tying, drone-based progress capture, or 3D-printed components to a live site — where the technological feasibility was genuinely in question.
• BIM and digital integration. Building custom interoperability between BIM, scheduling, and fabrication tooling, or developing clash-detection and generative-design workflows that no commercial product delivered.

The line the CRA draws is whether the work could have failed for a technological reason. A contractor applying a known method to a familiar problem is doing engineering. A contractor who does not know, at the outset, whether the approach will physically work — and runs trials to find out — is doing SR&ED.

What you can claim — costs, the proxy method, and restored capital expenditures

Three core expenditure categories apply, defined under section 37 and the investment-tax-credit rules in section 127 of the Income Tax Act. Salaries and wages of staff directly engaged in the experimental work — project engineers, site superintendents running trials, in-house designers — are captured in proportion to their SR&ED time. Canadian arm’s-length contractor payments are claimable at 80% of the contract value, which matters because construction R&D is so often subcontracted. Materials consumed or transformed in building and testing a prototype assembly are claimable at cost.

Most small and mid-size construction claims use the proxy method, which adds an overhead amount equal to 55% of qualifying salaries without tracking actual overhead project-by-project. And after Bill C-15, the restored capital-expenditure rules mean that test rigs, prototype modular units, and specialized equipment acquired on or after December 16, 2024 and used in SR&ED can once again generate credits — a category that disproportionately benefits capital-intensive trades. Specified-employee (owner-manager) salaries remain restricted, so an owner who runs the R&D personally needs careful scoping. See our companion SR&ED eligibility and claim-amounts guide for the full mechanics, and estimate a number with the SR&ED refund estimator.

How to document a construction SR&ED claim so it survives CRA review

Construction claims fail on records, not eligibility. The CRA expects evidence created while the work happened: dated trial logs, mix-design test results, shop-drawing revisions tied to failed assumptions, photographs of prototype failures, and time allocated by project. A reconstructed spreadsheet built at year-end is the single biggest red flag a Research and Technology Advisor looks for. The most reliable construction claims fold documentation into the existing project workflow — tagging timesheets to the experimental scope, saving failed test results rather than deleting them, and keeping a short monthly note of what was tried and what was learned. None of this requires a separate R&D department; it requires deciding, at the start of the year, which problems are genuinely uncertain and tracking them deliberately. The claim itself is filed with the T2 return on Form T661 plus Schedule T2SCH31, with Ontario credits on Schedule 566. You have 18 months after fiscal year-end to file — miss it and the claim is statute-barred with no extension.

Case study — a modular builder’s SR&ED claim (Ontario, fiscal 2025)

An Ontario CCPC building volumetric modular housing came to Insight Accounting CPA convinced it “didn’t do R&D.” Over its fiscal year ending December 31, 2025 it had in fact run three experimental programs: a new steel-to-CLT connection detail whose load performance was uncertain; a panel-sealing system to hit airtightness targets that off-the-shelf products missed; and a factory-line sequencing trial to control dimensional drift across modules.

We captured $430,000 of eligible salaries (from $710,000 of design and engineering payroll, allocated by trial logs), a proxy overhead of $236,500 (55%), and $90,000 of arm’s-length Canadian contractor work at 80% ($72,000). Total qualifying expenditure was roughly $738,500. The federal refundable credit at 35% came to about $258,000, the Ontario 8% OITC added roughly $59,000, and the file cleared a financial review without a technical review because the contemporaneous records held up. The refund funded two new factory hires for 2026.

Frequently asked questions

Our work is “just building.” Can a contractor really claim SR&ED?
If a project required resolving genuine technological uncertainty through trials — not applying known methods — it can qualify regardless of the trade. Modular, green-build, automation, and BIM-integration work qualify most often.

What is the SR&ED credit worth in 2026?
For a CCPC, 35% refundable on the first $4,500,000 of qualifying spend (up to $1,575,000 in cash), plus Ontario’s 8% refundable OITC and 3.5% non-refundable ORDTC.

Can we claim equipment now?
Yes. Bill C-15 restored capital-expenditure eligibility for property acquired on or after December 16, 2024 and used in SR&ED — a meaningful change for equipment-intensive construction firms.

What records does the CRA want?
Contemporaneous evidence: dated trial logs, test results, revised shop drawings, prototype photos, and time allocated by project. Records reconstructed after year-end are the leading cause of denied or reduced claims.

How long do we have to file?
18 months after fiscal year-end. After that the SR&ED claim is statute-barred and cannot be filed.

Authoritative references: the CRA’s SR&ED Investment Tax Credit Policy and SR&ED Capital Expenditures Policy, and the leading eligibility precedent Northwest Hydraulic Consultants Ltd. v. The Queen.

This article is general information about the SR&ED program in Canada as of 2026 and is not tax, legal, or accounting advice for any specific situation. SR&ED eligibility is fact-specific and depends on the precise technical work performed and the records kept. For advice on your circumstances, consult a Canadian CPA. Insight Accounting CPA Professional Corporation is licensed under the Public Accounting Act, 2004 (Ontario) and registered with CPA Ontario as a public accounting firm.