Gain bedrooms, kitchens, offices, or sunrooms with expert design-build service. Includes permits (4–8 weeks), a 2-year warranty, fixed pricing, and seamless integration with your existing home.
Why a Home Addition?
Your Simcoe County home may no longer fit your growing family, work-from-home needs, or entertaining style. A custom addition creates tailored space while preserving your neighbourhood, equity, and layout — often yielding 50–100% ROI on second-storey or kitchen projects.
Rather than absorbing relocation costs and market uncertainty, invest in the home you already love and the lot you know.
Our Services
Tailored designs that match your home's roofline, materials, and flow — for a built-in look that lasts.
Extra bedrooms and offices without footprint growth — includes full structural engineering and seamless roof integration.
Bigger kitchens and family rooms with flawless tie-ins to your existing structure, matching finishes and materials.
Year-round light-filled retreats designed for comfort across all seasons with proper insulation and glazing.
Quiet, tech-ready workspaces separated from the main living area — built for productivity and privacy.
Transform underused garage space into a studio, gym, or guest suite with full insulation, HVAC, and finishing.
Unlock rec rooms, rental units, or in-law suites from existing unfinished space — maximizing your current footprint.
Fully bespoke additions tailored to your specific lot, zoning restrictions, and lifestyle — designed from scratch.
100% Turn Key
From the first permit application to your final walkthrough, we own every phase in-house. No subcontract surprises, no coordination gaps.
We handle the full Township of King permit process — zoning review, conservation authority, fee deposits, CityView issuance, and all inspections. You don't touch a form.
In-house design team creates custom layouts matched to your roofline, materials, and lot. Includes structural engineering, drawings, and fixed-price budgets before any work begins.
Excavation, footings, concrete work, and all structural framing performed by our own crew. Full engineering sign-off at every stage before proceeding.
Walls, roof tie-in, windows, exterior doors, insulation, vapour barrier, and waterproofing — the complete weathertight shell built to Ontario Building Code and beyond.
Electrical, plumbing, HVAC, drywall, flooring, trim, paint, and cabinetry — all finished to match or exceed your existing home's quality and aesthetic.
Siding, soffit, fascia, eavestroughs, exterior paint, and full site restoration. Your property left cleaner than we found it — ready to enjoy from day one.
Transparent Pricing
Simcoe County additions range $50K–$500K+, averaging $300–$550/sq ft (2026 GTA rates). We provide fixed quotes post-site visit that cover everything — no surprises.
| Addition Type | Sq Ft Range | Cost / Sq Ft | Total Estimate | Key Factors |
|---|---|---|---|---|
| Bump-Out / Extension | 50 – 150 sq ft | $350 – $600 | $20K – $90K | Framing & finishes |
| Rear Kitchen Extension | 150 – 600 sq ft | $300 – $500 | $45K – $300K | Foundation & HVAC |
| Sunroom / Garage | 200 – 400 sq ft | $250 – $450 | $50K – $180K | Insulation & windows |
| Second-Storey Addition | 400 – 1,200 sq ft | $350 – $550 | $140K – $660K | Roof & engineering |
| Custom High-End | 800+ sq ft | $500 – $800+ | $400K – $1M+ | Luxury materials |
Cost Drivers to Know: Structural work adds $50–$100/sq ft; permits typically represent 5–10% of the budget; site conditions vary; finishes account for 20–40% variance. Highest-ROI picks: second-storey additions and kitchen expansions consistently deliver the best return.
Make the Right Call
Most Simcoe County homeowners don't realize how expensive moving actually is. Here's what the numbers really look like side by side.
| Factor | Home Addition with Bluewater |
Buying & Moving |
|---|---|---|
| Keep your neighbourhood & school district | ✓ | ✗ |
| Land Transfer Tax | ✓ None | $15K – $40K+ |
| Realtor Fees (buy + sell) | ✓ None | $30K – $60K+ |
| Moving & storage costs | ✓ None | $5K – $15K |
| Mortgage rate reset risk | ✓ No new mortgage needed | Higher rate on new purchase |
| Disruption to family & routine | Minimal (stay home) | High |
| Custom to your exact needs | ✓ Designed for you | Compromise required |
| ROI on investment | 50 – 100% | Market-dependent |
| Fixed price guarantee | ✓ Included | Bidding wars |
| Total hidden costs | ✓ Zero surprises | $50K – $115K+ in fees alone |
Estimates based on 2026 GTA market data. Moving costs vary by property value and transaction.
We Handle It All
The Township of King requires permits for code, zoning, and safety compliance. We manage the full process so you avoid fines, delays, or stop-work orders.
Initial application review completed within 5 business days.
Approvals from zoning and conservation authority — typically 2 weeks to 3 months.
All permit fees and deposits per township by-law — included in your fixed quote.
Digital permit issued via CityView — construction-ready clearance confirmed.
Foundation, framing, and final inspections scheduled and coordinated on your behalf.
Skipping or mismanaging permits risks stop-work orders, insurance voids, resale complications, and safety liability. Simple additions are typically approved in 2–3 months — we start the clock on day one.
How We Work
One team. Streamlined execution. From first call to final walkthrough — all under one roof.
We discuss your goals, assess your property, and run a preliminary zoning check to confirm feasibility before any commitment.
Custom layouts, material selections, and detailed budgets are developed — with full transparency at every stage.
See Pricing SectionFull permit handling and structural engineering — typical turnaround 4–8 weeks. We track every submission.
See Permits SectionFraming through finishes — our crew works to schedule, with regular progress updates and clean, respectful site management.
A detailed walkthrough with you to review every finish and detail before we close out — your satisfaction is the standard.
2-year workmanship warranty with 2-day claim response. We remain your partner for any follow-up needs, for life.
2-Year WarrantyWhy Bluewater Design Build
One company handles design, permits, engineering, and construction — no gaps, no finger-pointing, no coordination overhead.
Full permit handling, fixed transparent quotes, and a 2-year warranty are standard — not add-ons. Know your costs upfront.
We guide you toward additions with the strongest return — and every project is designed to match your home's existing roofline, materials, and flow.
No vague schedules. We commit to milestones, keep you informed weekly, and deliver finished work built to outlast you.
Our Work
A look at recent home additions, second-storey builds, and extensions across Simcoe County and the GTA.
Who You're Hiring
Our Story
After two decades building across Ontario, I kept seeing the same problems: homeowners getting passed between subcontractors, surprise invoices, and additions that never quite looked right. Bluewater Design Build exists to fix that.
Every project we take on is personally overseen from design to final inspection. We keep our client list intentionally small so every homeowner gets that level of attention.
Client Stories
Hear from Simcoe County families who expanded their space — and their lives — with Bluewater.
"On-time, on-budget transformation — the quality is exceptional. We got our second storey and it looks like it was always part of the house."
"Feels completely original — like it was always there. Real professionals from the first site visit through to the final punch list."
"The whole process was stress-free from permits to the final punch list. They handled everything and kept me informed every step of the way."
Don't Let Budget Stop You
A home addition is one of the best investments you can make. We work with trusted lending partners so you can start sooner without depleting savings.
Explore Financing OptionsCommon Questions
Simcoe County additions range from $50K to $500K+, with most projects landing between $300–$550 per square foot (2026 GTA rates). We provide fixed quotes post-site visit that cover all work — no surprise invoices.
Typically 4–8 weeks for straightforward additions in the Township of King. We manage the entire permit process — submission, zoning review, conservation authority approvals, and inspection scheduling — so you don't have to.
For smaller additions (bump-outs, sunrooms, garage conversions), most homeowners can remain in their home throughout. For larger second-storey projects or major structural work, temporary relocation may be necessary — we advise you upfront during planning.
An "addition" typically refers to going up (second-storey), while an "extension" refers to going out (rear or side extensions that expand the footprint). We handle both, and both require permits and structural engineering.
Well-executed second-storey additions and kitchen expansions consistently deliver 50–100% ROI in the GTA market. The exact return depends on market conditions, project quality, and neighbourhood comparables — we can discuss this during your consultation.
Absolutely — seamless integration is a core part of our design process. We match your existing roofline, exterior materials, interior finishes, and architectural style so the addition looks like it was always part of the original home.
Where We Build
Licensed and actively building across York Region, Simcoe County, and the Northern GTA. If you're within our zone, we can be at your door for a free site visit.
Our Service Locations
Don't see your city? Contact us anyway — we regularly travel outside our primary zone for the right project.
Free Consultation
Tell us about your project and we'll come to you. No obligation, no pressure — just a clear picture of what's possible, how long it takes, and what it costs.
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