Top 5 General Contractors
in Oshawa
We compared 5 General Contractors serving Oshawa, Ontario using publicly available business information, including customer reputation, local presence and documented services. Across the businesses featured here, documented specialties include Kitchen renovations, Residential renovations, and Commercial renovations.
★ Oshawa’s featured general contractors have the highest score among the nearby FiveBest markets compared.
For general contracting in Oshawa, HH renovation & general contracting Inc documents residential and commercial interior renovation work, including complete basements, kitchens, bathrooms, flooring, painting, plumbing and electrical work for multi-trade project scopes.
Residential renovations · Commercial renovations · Complete basement renovations
Paradisaic Building Group operates from Beaufort Court in Oshawa and undertakes residential renovation construction across Durham Region, including kitchens, home additions, whole-home renovations and basements. The company states that each project is assigned a dedicated foreman who works on site with the crew daily.
Whole-home renovations · Kitchen renovations · Main-floor remodeling
Elite Star General Contracting Ltd is listed at an Oshawa address for general renovations, including interior and exterior work, kitchen and bathroom renovations, home extensions, and post-disaster renovations. Its documented scope also includes basement projects, which may suit renovations involving several parts of a property.
General renovations · Interior and exterior renovations · Kitchen renovations
Henley Contracting Ltd. manages residential construction work in Oshawa, including custom homes, major renovations and home additions. Its general-contracting approach covers early planning and design coordination through construction and final finishing; the company also cites familiarity with local bylaws, permits and inspections.
Custom home construction · Major home renovations · Home additions
Fire Beard Contracting is an Oshawa-based general contractor whose documented work spans interior and exterior renovation projects, including kitchens, bathrooms, basement finishing and custom decks. Its service pages also list renovation consulting and project management, making it relevant for coordinated home upgrades or basement rental-unit conversions.
Kitchen renovations · Complete bathroom renovations · Basement renovation and finishing
Oshawa general contractors lead nearby FiveBest markets
Featured general contractors in Oshawa have a median FiveBest Score™ of 69/100, compared with 68/100 for featured general contractors across Ontario.
Among nearby FiveBest markets, those in Ajax (65/100) and Clarington (63/100) score below Oshawa, while Whitby (69/100) is close to Oshawa.
Comparison based on profiles currently featured by FiveBest in this category with an available FiveBest Score™.
How we researched General Contractors in Oshawa
FiveBest reviews publicly available information for General Contractors serving Oshawa.
- Google rating and review history
- Documented services
- Years in business when available
- Oshawa and surrounding service coverage
- Business website and online presence
- Independent reputation signals when available
Research last updated: September 2026
Common Services
- Whole-home renovation in Oshawa
- Home additions in Oshawa
- Structural renovation in Oshawa
- Basement finishing in Oshawa
- Kitchen and bathroom renovation in Oshawa
- Open-concept conversions in Oshawa
FiveBest Match™
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FiveBest Match™ — Coming Soon 🔒How to Choose a general contractor in Oshawa
Compare general contractors in Oshawa for whole-home renovations, additions, structural changes, basement finishing, kitchen and bathroom projects, permit coordination, subcontractor management and design-build services. FiveBest helps homeowners compare selected local renovation contractors.
Compare selected general contractors in Oshawa for home renovations, additions, structural work, basement finishing, project management and design-build services.
Confirm applicable licensing, insurance and experience with projects similar in scope and complexity.
Look for a written scope, allowances, exclusions, payment schedule, change-order process and warranty terms.
Compare estimates based on the same plans, materials and assumptions rather than price alone.
Review completed renovations similar to yours and ask for relevant references.
Confirm who coordinates permits, inspections and licensed trades where they are required.
Ask who manages the site, schedule, subcontractors, communication and project changes.
What Affects General Contracting Costs
- Project size and scope
- Design and engineering
- Structural work
- Materials and finishes
- Permits and inspections
- Number of trades involved
- Site access and existing conditions
- Allowances and selections
- Schedule and project complexity
Questions to Ask a General Contractor
- Have you completed projects similar to mine?
- What licensing and insurance apply to this project?
- Who will obtain permits and coordinate inspections?
- Is the estimate itemized and what allowances are included?
- How are change orders approved and priced?
- Who supervises the project day to day?
- What is the payment schedule?
- What workmanship warranty is provided?
Frequently Asked Questions
Project cost depends on scope, design, structural work, labour, materials, permits, subcontractors, site conditions and schedule. Compare detailed estimates based on the same plans and specifications.
A general contractor may plan and manage the renovation, coordinate trades, order materials, schedule inspections, oversee site work, manage changes and remain responsible for the overall project delivery.
Permits may be required for structural changes, additions, plumbing, electrical, HVAC, occupancy changes and other work. Requirements vary by municipality and project scope.
Design-build combines design and construction responsibility within one team. Traditional delivery may involve separate designers and contractors. Compare accountability, pricing, schedule and design flexibility.
Timing depends on design, permits, product lead times, structural work, inspections, trade availability and changes during construction. Ask for a written schedule with major milestones.
Compare licences where required, insurance, similar-project experience, references, contracts, itemized estimates, allowances, change-order procedures, schedule, payment terms, warranties and communication.