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Kastone Construction — general contractor and builder in Ottawa, delivering design-build, commercial fit-ups, residential renovations, and construction management across Ottawa and the surrounding area.

Exceptional Spaces.
Built Without Compromise.
Serving Ottawa & Area

Open-concept office fit-up by Kastone Construction with lounge seating and workstations
About Kastone

Experts in construction.
Built to last.

Kastone Construction is an Ottawa general contractor delivering commercial and residential projects with precision. Our efficient in-house team, trusted network of skilled trades, and proven systems keep every build organized, on schedule, and on budget.

From office fit-ups and retail spaces to kitchens, additions, and full-home renovations, we manage every stage, from design and approvals to construction and final handover, so you work with one accountable team.

  • ✓ Commercial and residential expertise
  • ✓ Design, build, and project management under one roof
  • ✓ Rated 5.0 ★ by our clients on Google
  • ✓ Based in Ottawa · Open Monday – Friday
About Kastone
Our services

Construction services
across Ottawa.

Design & Build

One team from first sketch to final build. We manage design, approvals, and construction so your project stays true to the vision, on schedule, and on budget.

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Commercial

Office fit-ups, health care spaces, retrofit remodelling, and retail builds, planned around your operations to keep downtime to a minimum.

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Residential

Additions, renovations, and custom projects that add space, comfort, and lasting value to your home, built with care in every detail.

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Project Management

Experienced oversight of scope, schedule, budget, and trades, with clear reporting so you always know exactly where your project stands.

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General Contracting

One accountable contractor coordinating trades, materials, inspections, and site safety from mobilization to final handover.

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Skilled Trades

Experienced, vetted tradespeople delivering precise, code-compliant workmanship through every phase of construction.

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Construction Management

Professional management from pre-construction through closeout, protecting quality, cost, and schedule on complex builds.

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Where quality craftsmanship meets thoughtful design

Why Choose Kastone Construction

We create spaces that feel functional, refined, and built to last, backed by an experienced team, trusted trades, and a process that keeps you informed at every stage.

Quality Without Compromise

Every detail is built to a high standard, from structure and finishes to final inspection, so the result looks refined and performs for years to come.

Organized From Day One

Proven systems, clear schedules, and consistent communication mean you always know what is happening on site and what comes next.

Rated 5.0 ★ on Google

Homeowners and businesses across Ottawa trust Kastone for professional, reliable work, and their reviews reflect the care we bring to every project.

One Accountable Team

Design, trades, and project management are coordinated under one roof, giving you a single point of contact from planning to handover.

Areas We Service

Hover a pin or city to explore our coverage

  • Ottawa
  • Orléans
  • Kanata
  • Nepean
  • Barrhaven
  • Gloucester
  • Rockcliffe Park
  • Riverside South
  • Stittsville
  • Greely
  • Manotick
  • Westboro
  • Alta Vista
  • Hunt Club
  • Russell
  • Embrun
Client reviews

Rated 5.0 ★
on Google.