How to Plan a Bespoke Staircase Replacement in Cornwall

How to Plan a Bespoke Staircase Replacement in Cornwall

The moment a client stands in their hallway and realises the staircase is letting the whole house down — that's usually the moment this process starts. A bespoke replacement is one of the largest single joinery investments in a home, and the gap between a job that goes smoothly and one that runs over time and budget almost always comes down to how thoroughly it was planned at the outset.

This guide is written for homeowners in South East Cornwall — Liskeard, Saltash, Looe, the Tamar Valley — who want to approach the project properly, from first thoughts to the day a joiner arrives on site.

Step 1: Decide What You Actually Want

Before you speak to anyone or take a single measurement, get clear on the style. Open-plan with glass panels? Traditional pine with turned spindles? A chunky oak staircase that picks up the period character of a Liskeard Victorian terrace? The design direction shapes the budget, the material lead times, and what's structurally feasible in your stairwell.

Collect reference images — Pinterest boards, photos from properties you've visited, anything concrete. Joinery conversations move much faster when you can point to something rather than describe it in vague terms.

Think through:

• Balustrade style — metal, timber, glass, or a combination
• Newel post design — these set the tone more than most people expect
• Tread material — solid oak, pine, painted softwood, or a mix
• Winder treads or straight flight — partly dictated by your stairwell geometry

Step 2: Understand What You're Working With Structurally

Not every staircase replacement is a straightforward like-for-like swap. If you're removing a partition wall to open the staircase up, or if the rise and going need adjusting to meet current Building Regulations, structural or regulatory work may need to happen before a joiner can start.

Building Regulations in England require risers no higher than 220 mm and goings no less than 220 mm for domestic use. A good number of older Cornish cottages — particularly the steep-staired slate miners' terraces around Liskeard and St Cleer — simply don't meet this. A bespoke replacement is a genuine opportunity to sort it, but the stairwell may need widening or the floor opening altering.

If you suspect the opening needs to change, get a builder or structural engineer involved early. RPG Carpentry can advise once the space has been visited, but structural alterations sit outside the scope of the joinery trade and need the right people in the right order.

Step 3: Take Accurate Measurements — or Have Your Joiner Do It

A bespoke staircase is fabricated to your stairwell. Measurements need to be exact, not approximate. The key figures are:

• Total rise — floor to floor, measured vertically
• Total going — horizontal run of the staircase
• Stairwell opening — width and length of the void in the upper floor
• Headroom — clearance from the nosing line to the ceiling above
• Width of the flight

Any competent joiner will take their own measurements before fabricating anything. If you're gathering quotes from more than one tradesperson, having a rough sketch with these numbers saves time and produces more accurate figures.

Step 4: Get a Proper Quote — Not Just a Price Per Stair

Beware of headline figures that don't specify what's included. A thorough quote should break down:

• Design and fabrication
• Materials (timber species, balustrade components, fixings)
• Removal and disposal of the existing staircase
• Making-good to walls, floor, and ceiling around the new flight
• Finishing — painting, staining, or oiling if required

As of 2026, a bespoke timber staircase in the South East Cornwall and Plymouth area typically ranges from around £3,000 to £8,000-plus, depending on complexity, materials, and whether structural alterations are involved. A painted softwood replacement sits at the lower end; a full oak open-tread staircase with glass balustrade sits considerably higher. These are indicative ranges only — your actual quote depends on your specific stairwell, design, and site conditions.

Step 5: Plan the Disruption and Access

Replacing a staircase means part of the house will be inaccessible for a period. Think it through before work starts:

• Where will you sleep? If all bedrooms are upstairs, you may need a temporary arrangement or to stay elsewhere during the structural phase.
• Dust and debris — staircase work generates a fair amount. Discuss with your joiner how they'll protect flooring and adjacent rooms.
• Sequencing with other trades — if you're decorating the hallway or laying new flooring, agree who goes first. Generally: staircase in before floor finishes, decorating after the staircase is fitted.

Step 6: Sign Off All Finishing Details Before Fabrication Begins

This is where homeowners most often lose money by deciding too late. Banister colour, whether newels are capped or decorative, baluster spacing, the profile of the handrail — all of this needs to be agreed and confirmed before the staircase goes into the workshop. Changes after a bespoke staircase has been built can be expensive or impossible to reverse.

Write it down. A simple confirmation email listing the agreed design, materials, and finishes protects both you and your joiner. It sounds overly formal until something is misremembered months later.

Ready to Take the Next Step?

RPG Carpentry & Joinery builds bespoke staircases across South East Cornwall and Plymouth. If you're at the planning stage or ready for a quote, get in touch — we're happy to visit the property, take measurements, and talk through what's achievable for your home and budget.

Frequently asked questions