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Editorial shortlist / 2026

Top 10 construction lawyers in Ottawa (2026).

A supplied editorial shortlist focused on construction contracts, liens, prompt payment, adjudication, infrastructure, procurement, delay and deficiency claims, arbitration, and construction litigation. Use it as a research starting point, not an objective ranking.

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Owners, developers, contractors, subcontractors, suppliers, lenders, and design professionals can face different contract and dispute questions. Confirm role, project stage, and urgency directly.

Source and verification note. The names, focus descriptions, phone numbers, source links, firm labels, project-role tags, and research notes below were supplied or structured from the supplied brief. This prototype has not independently verified current licensing, roles, practice focus, recognition, case history, or availability. Confirm current details through the linked professional source and the official Law Society of Ontario directory.

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10 profiles shown
01Individual profile

Louis-Pierre Grégoire

Gowling WLG

Construction / infrastructure / contracts / disputes
OwnersGeneral ContractorsSubcontractorsSuppliersLendersArchitects/Engineers

The supplied research note describes construction contracts, procurement, and disputes for owners, contractors, subcontractors, suppliers, lenders, sureties, engineers, and architects, alongside a civil-engineering background. Confirm current role, certification, and focus directly with the linked professional source.

02Individual profile

Patrick A. Thompson

McMillan LLP

Construction / infrastructure / commercial litigation
Not specified in supplied notes

The supplied research note describes Construction & Infrastructure and Corporate Commercial Litigation work and Ontario practice since 2005. Confirm current role, recognition, and client-side experience directly with the linked professional source.

03Individual profile

Ian B. McBride

McBride Bushell Mckenna LLP

Construction litigation / liens / payment disputes / ADR
SuppliersSubcontractorsGeneral ContractorsOwnersLenders

The supplied research note describes a construction group representing suppliers, subcontractors, general contractors, construction managers, owners, bonding companies, and mortgagees, with Ian McBride identified as a group leader. Confirm current role and client-side experience directly with the linked professional source.

04Individual profile

Shawn O'Connor

Kelly Santini LLP

Construction litigation / liens / deficiency claims
Not specified in supplied notes

The supplied research note describes construction lien claims, building deficiencies, arbitration, multimillion-dollar construction disputes, and industry education. Confirm current role and client-side experience directly with the linked professional source.

05Individual profile

Lampros Stougiannos

Dentons

Infrastructure / major projects / procurement / P3
OwnersDevelopersGeneral Contractors

The supplied research note describes advice to governments, developers, contractors, and sponsors on project structuring, procurement, construction, financing, and operation, including P3, EPC, EPCM, and design-build projects. Confirm current role and focus directly with the linked professional source.

06Individual profile

David R. Elliott

Dentons

Construction and engineering disputes / arbitration / litigation
Not specified in supplied notes

The supplied research note describes construction and engineering disputes, arbitration, commercial litigation, and public procurement matters. Confirm current role and client-side experience directly with the linked professional source.

07Individual profile

Ricksen Tam

Borden Ladner Gervais LLP

Construction disputes / liens / delay claims / contracts
Not specified in supplied notes

The supplied research note describes construction contracts, lien litigation, breach-of-trust allegations, delay claims, deficiencies, and warranty disputes. Confirm current role, recognition, and client-side experience directly with the linked professional source.

08Individual profile

Quin Gilbert

Norton Rose Fulbright

Construction contracts / infrastructure / procurement / P3
OwnersDevelopersGeneral ContractorsSubcontractorsSuppliers

The supplied research note describes construction management agreements, design-build arrangements, EPC contracts, subcontracts, supply agreements, RFPs, procurement, and P3 projects. Confirm current role and client-side experience directly with the linked professional source.

09Individual profile

Dana P. Tierney

Tierney Stauffer LLP

Construction litigation / liens / contract disputes
Not specified in supplied notes

The supplied research note describes Construction Act matters, construction liens, tendering, contracts, bonding, breach-of-trust claims, design-change disputes, and adjudication. Confirm current role and client-side experience directly with the linked professional source.

10Individual profile

Michael Beeson

Raven, Cameron, Ballantyne & Yazbeck LLP

Construction / commercial litigation / insurance
Not specified in supplied notes

The supplied research note describes commercial litigation, construction law, and insurance law practice in Ontario since 2011. Confirm current role, principal practice, and client-side experience directly with the linked professional source.

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Independent directory disclaimer. BestLawyersOttawa.com is an independent lawyer directory and legal information platform. It does not provide legal advice. Use of this page does not create a lawyer-client relationship, and the shortlist is not an endorsement, certification, or guarantee of legal ability or outcome. Read how editorial pages work.