# Curved Staircase Renovation Toronto | From $18,000 > Need a curved staircase renovation in Toronto? Bent stringers, radiused treads and continuous handrails from $18,000. Free written quote in 48 hours. URL: https://staircaserenovationtoronto.ca/curved-staircase-renovation/ ![Staircase Renovation Toronto curved oak staircase with continuous handrail and iron balusters, Kingsway front hall](/images/misc/sweeping-curved-oak-staircase-with-radiused-treads.webp) # Curved Staircase Renovation in Toronto: Restore or Rebuild Last updated: September 28, 2026 Custom-bent stringers, radiused treads and continuous curved handrails, templated and fitted on site. Our senior lead supervises every curved install personally. Three to six weeks depending on the radius. Published price band $18,000 to $45,000 per staircase, by radius and material Three to six weeks depending on the radius Talk to a Staircase Specialist [#quote-form →](#quote-form) Call Our Estimator [tel:+14375242998 →](tel:+14375242998) Same-day response Monday to Friday. Written quote within 48 hours. - 22 Years Staircase work across the GTA since 2004 - WSIB Clearance Clearance letter available on request - $2M Liability General liability insurance, COI on request - Ontario Registered Ministry of Labour construction registration Fixed two-person WSIB crew on every install. Scope of Work ## What's Included in Curved Staircases Restoration and renovation of curved and radiused staircases. The work needs custom-bent stringers, radiused treads and continuous curved handrail fabrication, fitted on site for exact shape. Specialty scope for older Rosedale, Forest Hill, Yorkville, Deer Park and Moore Park residences. Our senior crew lead supervises curved installs personally. Timelines run three to six weeks depending on radius. - On-site templating of the radius - Custom-bent stringers and radiused treads - Continuous curved handrail fabrication - Owner personally supervises every curved install ![Plywood template clamped to a curved stringer during on-site measuring in a Toronto century home](/images/content/plywood-template-clamped-to-a-curved-stair-stringe.webp) Plywood template clamped to a curved stringer during on-site measuring in a Toronto century home Staircase Renovation Toronto [/ →](/) provides curved stair restoration, radiused tread and stringer rebuilds, curved stair railings and continuous handrail fabrication throughout Toronto, ON, backed by 22 years of staircase work across the GTA since 2004. The company is a design-build staircase renovation contractor based in Etobicoke, and curved and circular stairs are its most specialized scope. Every job is built to Ontario Building Code Section 3.4.6 for handrails and guards. The process covers each part of the curve: - Templating the exact radius directly on site. - Forming custom-bent stringers where originals fail. - Cutting each radiused tread to its own specific shape. The crew then laminates a continuous curved handrail that follows the pitch around the turn and finishes it with a volute or gooseneck. These sweeping stairs are common in the Edwardian and Victorian century homes of Rosedale, Forest Hill, Yorkville, Deer Park and Moore Park, and in the older front halls of the Kingsway in Etobicoke. Grand foyer curves also turn up in 2000s custom homes in Thornhill and Unionville. Our senior crew lead personally supervises every curved install. Timelines run three to six weeks depending on the radius of the curve, and the price falls between $18,000 and $45,000 per staircase (2026 pricing), set mainly by the radius and your choice of material. > Marta and her family on The Kingsway had an oak staircase with tired treads and a misaligned handrail. Our senior crew lead met with them on day one and explained it would be a six-week job. > > The crew carefully templated every tread, kept the sound stringer on the wall side, laminated a new continuous oak handrail, and set iron balusters at their own angle along the curve. The crew finished on schedule at $28,000. Her new rail lines up perfectly with the old curve all the way to the volute. ## What Does a Curved Staircase Renovation Involve? A curved staircase turns elegantly as it rises, either as a gentle arc or a tighter spiral sweep. The inner and outer stringers require specialized bending, every tread is a slightly different wedge shape, and the handrail constantly changes pitch. A renovation can mean anything from refinishing the treads and adding new railings to rebuilding the stringers and treads from scratch. These stairs are the showpiece of many older Toronto homes, from Rosedale semis to detached houses in Forest Hill. They are also the stairs most often damaged by poor repairs, because a standard straight-stair approach fails on a curve: - Treads cut from standard straight stock leave unsightly gaps against the wall. - Handrails built in flat sections develop awkward flat spots and bumps. A true curve needs templating and on-site fitting to look right. New stringers are laminated with a vacuum press over a bending form built to your exact radius, rather than forcing straight stock to bend. ## Restore, Recap or Rebuild: Choosing the Right Scope ### Restoration of original curved stairs Keeping sound old-growth stringers and treads is often the right call in a century home. We repair the structural damage, strip away the old finish, and replace the railing to match the original style. This method is common in Edwardian and Victorian homes across Rosedale, Forest Hill and Deer Park. Toronto’s dry winter air causes older wood to shrink, so our crew secures every joint tightly before applying new stains. ### Radiused tread and riser replacement New hardwood treads and risers get cut to the precise template of each individual step. We install these over your original stringers, provided they are still completely solid. Most homeowners choose Canadian white oak for this upgrade. Its closed pore structure stands up well to the humidity swings between Toronto’s humid summers and furnace-dry winters, and the stain is colour matched to your existing hardwood floor. ### Full curved staircase rebuild New custom-bent stringers, radiused treads, and a continuous handrail are required when the original structure has cracked or sagged beyond repair. We build entirely new support ribs out of solid 7/8-inch material inside the box treads to stop future deflection. A tread that moves even 1/8 of an inch will eventually cause loud squeaks. ### Curved handrail and baluster replacement A new laminated handrail follows your exact curve, paired with iron or wood balusters set at individual angles. On curved stairs the crew uses vertical balusters, because the Ontario Building Code requires residential guards that don’t make climbing easy. The half-inch iron bars are spaced under 4 inches apart to meet the 4-inch sphere rule. ## What Pushes a Curved Stair Toward $18,000 or $45,000 The price depends on the materials you choose and the complexity of the radius. The 2026 band is $18,000 to $45,000 per staircase. White oak costs more than red oak, and walnut costs more again. | Cost factor | Toward $18,000 | Toward $45,000 | | --- | --- | --- | | Stringers | Original, kept and repaired | New custom-bent stringers | | Radius | Gentle arc | Tight radius, full sweep | | Species | Red oak | White oak or walnut | | Handrail | Short curved section | Long continuous rail with volute | | Balusters | Kept or plain square bar | Decorative iron, individually angled | For context, the Kingsway curved oak staircase featuring iron balusters was $28,000 over six weeks. We also completed a Rosedale Edwardian refinish and railing replacement for $16,500 over three weeks, primarily because most of the original structure stayed in place. Curved work needs custom forming on site, which is why its starting price sits well above straight stair work. ## Is Your Curved Stair Sagging, Squeaking or Pulling Away? The free in-home estimate checks for specific structural warning signs. A failing curved staircase shows its age through movement and separation. Signs a curved staircase needs attention: - Treads that dip in the middle or feel soft near the outer stringer. - Gaps opening between the treads and the wall-side stringer. - A handrail that moves when you lean on it, or feels bumpy along the curve. - Balusters that are loose, missing, or spaced wider than 4 inches (100mm). - Earlier repairs with straight-cut parts that fail to follow the actual curve. Test your treads by stepping firmly on the outer edge. More than 1/8 of an inch of give means the internal support blocks have failed and need reinforcement. ## Curved vs Straight Stairs: Why the Work Is Different The installation process changes with the shape of your stairs. Straight components are cut in the Etobicoke shop, but a curve is formed and fitted right in your front hall. | | Curved staircase renovation | Straight staircase renovation | | --- | --- | --- | | Price | $18,000 to $45,000 | $6,500 to $14,000 | | Fabrication | Templated and fitted on site | Cut in our Etobicoke shop | | Timeline | 3 to 6 weeks | Part of 2 to 4 weeks overall | | Supervision | Senior crew lead on site personally | Crew lead trained in-house for at least five years | If you are planning a new curved stair or a major change in shape, start with custom staircase design [/custom-staircase-design/ →](/custom-staircase-design/) . For standard flights, see straight staircase renovation [/straight-staircase-renovation/ →](/straight-staircase-renovation/) . Many curved projects also include new iron balusters [/iron-balusters/ →](/iron-balusters/) or custom wood stair railings [/wood-stair-railings/ →](/wood-stair-railings/) . ## How Our Curved Stair Work Compares | | Typical Provider | Staircase Renovation Toronto | | --- | --- | --- | | Fabrication | Prefabricated or shop-cut parts, sometimes shipped from out of province | Templated and fitted on site to your exact radius | | Supervision | Install often handed to a subcontractor | Senior crew lead on site for every curved install | | Pricing | Quote only after a sales visit | Published band of $18,000 to $45,000, written quote within 48 hours | | Crew and insurance | Varies by job | Two-person WSIB-cleared crew, $2M general liability | | Code | Not always stated | Handrails and guards to Ontario Building Code Section 3.4.6 | | Warranty | Varies | Written workmanship warranty on all installation labour | ## Ontario Building Code and Toronto Permits for Curved Stairs Curved stairs must meet Ontario Building Code requirements. Every project is built to Section 3.4.6, with these details checked on site: - Tapered treads must have a minimum run of 150 millimetres at the narrow end. - Handrails need to sit between 860 and 1070 millimetres high. - Handrails must allow for continuous graspability without interruption. Cosmetic restoration does not need a City of Toronto building permit. Replacing structural stringers or changing the rise, run or headroom can trigger one. The estimate tells you which rules apply, and we handle drawings if a permit is needed. Book a free in-home estimate and get a written quote within 48 hours. Real Costs ## How Much Does Curved Staircase Renovation Cost in Toronto? Published Band ### Curved Staircase Renovation $18,000 to $45,000 per staircase, by radius and material Scope: Curved Staircases Three to six weeks depending on the radius Book Free Estimate [#quote-form →](#quote-form) ### What the price covers All pricing includes a two-person WSIB crew, materials, installation, jobsite protection and final cleanup. Free written estimate before any work begins. No hourly billing, no hidden fees. A restoration that keeps sound original stringers sits toward the low end. A full rebuild with new bent stringers, a tight radius, solid white oak or walnut and a long continuous handrail sits toward the top. - On-site templating of the radius - Custom-bent stringers where needed - Radiused treads and risers - Continuous curved handrail fabrication - Owner supervision on every install day - Written workmanship warranty Compare every service band on our staircase renovation prices [/pricing/ →](/pricing/) page. Why Homeowners Pick Us ## Why Choose Staircase Renovation Toronto for Curved Staircases? - ### Senior lead on every curved job Our senior crew lead personally supervises curved and specialty installs. They aren't handed off. - ### Templated on site Curves are measured with full-size templates in your house, then fitted on site for exact shape. - ### Keep what can be saved Sound original stringers and treads in older homes are kept and refinished where possible. - ### Honest timelines Three to six weeks, stated on day one. Curved work isn't rushed to fit a sales promise. - ### Railings built to code Handrail height, graspability and baluster spacing follow Ontario Building Code Section 3.4.6. - ### Millwork background Our senior crew lead trained in cabinetry and custom millwork before stairs, which is exactly the skill set curved rails need. Clean Site Execution ## How Our Curved Staircases Process Works You deal with the person who measures and builds your staircase, from the first visit to the warranty. 1. 1 ### Free In-Home Estimate On-site measurement, structural inspection and scope discussion. A senior crew lead attends every estimate. Written quote within 48 hours. 2. 2 ### Design and Material Selection Wood species, stain samples against your floor, baluster and railing style. Full material list and shop drawings for approval before anything is ordered. 3. 3 ### Fabrication and Prep Straight staircases are cut in our Etobicoke shop; curved work is fitted on site. Several Toronto contractors ship prefabricated stairs from out-of-province suppliers, which limits custom fit. We build to the exact measurements of your opening. 4. 4 ### Installation by Our Supervised Crew Our two-person WSIB crew works behind dust barriers with floor protection throughout the home, from tread removal through final trim. Our actual founder of the company signs off on every estimate from our Etobicoke shop before it goes out. That's Andriy Kovalenko. 5. 5 ### Final Walkthrough and Warranty We walk every tread, riser, baluster and handrail with you against the written scope, then issue your written workmanship warranty. Typical timeline: Three to six weeks depending on the radius ![Finished oak staircase with black iron balusters in a Toronto home](/images/misc/finished-oak-staircase-with-matte-black-iron-balus.webp) Questions About Curved Staircases? ## Get a Written Curved Staircase Renovation Quote Within 48 Hours A senior crew lead measures your stairs and gives you the options with prices. No hourly billing, no hidden fees. Talk to a Staircase Specialist [/contact/ →](/contact/) Call Our Estimator (437) 524-2998 [tel:+14375242998 →](tel:+14375242998) - Written quote within 48 hours - Owner attends every estimate - Written workmanship warranty - No hourly billing, no hidden fees Our Work ## Recent Curved Staircases Work Click any photo to see it larger. Before: worn Edwardian curve After: radiused treads and new rail Volute over the starting step Handrail laminated and fitted on site Homeowner Feedback ## What GTA Homeowners Say > "Our curved oak staircase on The Kingsway took six weeks, and the lead estimator told us that on day one. The iron balusters and the new handrail line up perfectly with the old curve." Marta K.The Kingsway, Etobicoke > "We wanted to keep the character of our Edwardian stairs. They refinished what could be saved, replaced the railing, and finished in three weeks as quoted." David and Helen R.Rosedale, Toronto > "Condo management needed the insurance certificate before anyone came in. They sent it the same day, and the glass railing looks like it came with the loft." Jonathan L.Yorkville, Toronto ### Homeowner video walkthroughs are coming We're filming short walkthroughs with past clients in Etobicoke, Rosedale and Scarborough. Until they're posted, ask us for the addresses of recent jobs near you and we'll arrange a look. Homeowner Questions ## Curved Staircase Renovation FAQs Can you keep our original curved stringers? Often, yes. In older Rosedale, Forest Hill and Yorkville homes, the original curved stringers are frequently solid old-growth wood that's worth keeping. We check them at the estimate for cracks, rot, separation from the wall and movement under load. If they're sound, we keep them and work on the treads, risers and railing. If a stringer has cracked along the curve or the stair has sagged, we template it and build a new bent stringer to the same shape. Sometimes one stringer is kept and the other is replaced. Keeping original structure where it's safe usually brings the price toward the lower end of the band. How long does a curved staircase renovation take? Three to six weeks from the start of work, depending on the radius and scope. A tight radius with new bent stringers and a long continuous handrail takes the longest, because each part is templated, formed and fitted on site. A restoration that keeps the stringers and focuses on treads and railings is at the shorter end. We give you the timeline in writing on day one and keep it. Our Kingsway curved oak project was a six-week scope, and that's what it took. You keep access to the upper floor on most days; we plan any day without stair access well in advance. How much does a curved staircase renovation cost? $18,000 to $45,000 per staircase in 2026, depending on the radius, the materials and how much of the original structure can stay. Our Kingsway curved oak staircase with iron balusters, a six-week scope, came in at $28,000. A Rosedale Edwardian refinish with railing replacement was $16,500, below the curved band because it was mostly refinishing. The biggest cost drivers are new bent stringers, a tight radius, solid hardwood species like white oak or walnut and the length of the continuous handrail. You get a detailed written quote after the in-home estimate. What makes curved stairs harder than straight stairs? Every tread on a curve is a different shape, the stringers are bent rather than straight, and the handrail has to follow a changing pitch around the curve without flat spots. None of it can be cut from standard stock. We template each part on site, form or laminate it, and fit it in place, which is why curved work isn't cut in the shop like straight stairs. Can a curved staircase be refinished instead of rebuilt? Yes, if the structure is sound. Many older curved stairs just need the treads sanded or recapped, the risers repainted and the railing repaired or replaced. That's often much less than a full rebuild. We'll tell you honestly which one your stair needs. Do you replace curved handrails? Yes. Curved handrails are built as a continuous rail that follows the curve, usually laminated from thin strips of hardwood and shaped on site. We finish them with a volute or gooseneck to match the style of the house. Can you add iron balusters to a curved stair? Yes. Each baluster is set at its own angle and height along the curve, then epoxy-anchored like on straight stairs. The Kingsway project combined iron balusters with a new curved handrail. Which wood species work for curved stairs? Red oak, white oak, maple and walnut are all used. Oak bends and laminates well and matches most Toronto floors. Walnut costs more but suits darker traditional interiors. Do curved staircases need a permit? Cosmetic restoration doesn't. Replacing structural stringers or changing the rise, run or headroom can trigger a City of Toronto building permit. We tell you at the estimate and handle drawings if needed. Is a flared bottom step the same as a curved stair? No. A flared or bullnose starting step is common in Richmond Hill and Vaughan foyers on otherwise straight stairs. We template and recap flared steps as part of a normal renovation. Can you convert a straight stair to a curved one? Sometimes, if the stairwell opening allows it. It's a structural change that goes through custom staircase design, usually with drawings and a permit. Can you put glass railings on a curved staircase? Yes, on most curves. A gentle radius can take short flat tempered glass panels set in segments along the curve, while a tight radius needs custom-curved tempered panels, which cost more and add lead time. We measure the radius at the estimate and quote it alongside our glass stair railings from $3,500 per run. Does renovating a curved staircase add resale value in Toronto? A curved staircase is usually the first thing buyers see in the front hall of a Rosedale, Forest Hill or Kingsway home, so worn treads, a wobbly rail or straight-cut repairs stand out. Restoring the original curve, rather than covering it, keeps the period character that buyers in these neighbourhoods pay for. We don't promise a specific return, but a sound, code-compliant stair removes a common inspection flag. Who does the work on a curved staircase? Staircase Renovation Toronto's senior lead supervises every curved install personally, with our two-person WSIB-cleared crew doing the work alongside him. The company carries $2M general liability insurance and an Ontario Ministry of Labour construction registration. Often Paired With ## Related Services ![Open-riser white oak staircase on a steel mono-stringer with a glass guard](/images/misc/open-riser-white-oak-staircase-on-a-steel-mono-str.webp) ### Custom Staircase Design From $1,500 Custom staircase design service for Toronto architects, builders and homeowners in Yorkville, King West and Lawrence Park: SketchUp 3D renderings, species-grade material specs, shop drawings for P.Eng review, with the design fee credited against your final build. View staircase design details [Custom Staircase Design →](/custom-staircase-design/) ![Staircase Renovation Toronto matte black iron balusters under an oak handrail in an open foyer staircase](/images/misc/matte-black-iron-balusters-with-single-twist-and-b.webp) ### Iron Balusters Installation From $1,500 Iron baluster swaps replacing 1990s wood spindles across Etobicoke, North York and Mississauga homes: wrought or powder-coated steel balusters set in two-part epoxy, 4-inch sphere OBC spacing, oak handrail retained where sound for homeowners and landlords. View iron balusters details [Iron Balusters Installation →](/iron-balusters/) ![New red oak handrail and box newel post on a refinished Rosedale staircase](/images/misc/new-red-oak-stair-handrail-with-box-newel-post-and.webp) ### Wood Stair Railings From $1,200 Solid wood handrails, newel posts and wall-mount rails for Toronto homes: red oak, maple, poplar or walnut milled to profile, meeting OBC Section 3.4.6 for grip and 42-inch height, for Riverdale, Leslieville and Forest Hill homeowners restoring heritage staircases. View wood railings details [Wood Stair Railings →](/wood-stair-railings/) Free In-Home Estimate ## Ready to Price Your Curved Staircases Project? Book a free in-home estimate. A senior crew lead measures your stairs, checks the structure and sends a written curved staircase renovation quote within 48 hours. - Written quote within 48 hours - Owner attends every estimate - Written workmanship warranty - No hourly billing, no hidden fees ![Two-person crew fitting a new oak tread behind a dust barrier](/images/misc/two-person-crew-fitting-a-new-oak-tread-on-a-toron.webp) Prefer to talk it through? Call (437) 524-2998 [tel:+14375242998 →](tel:+14375242998) . Mon to Fri 8:00 AM to 6:00 PM, Sat 9:00 AM to 3:00 PM, closed Sunday. Free Written Quote ## Request Your In-Home Estimate our senior crew lead reviews every request himself and we reply the same day, Monday to Friday. ### Thanks, we got your details. our senior crew lead will be in touch the same day, Monday to Friday.