What a custom steel structure costs: canopy, stair frame, balcony base

What the final price is made up of

A steel structure's price is built from four things: the steel itself, the labour to cut, weld and assemble it, the finish that protects it outdoors, and the logistics of getting it to your building and fixed in place. Each of these can swing the total more than people expect, which is why a canopy frame for one house costs noticeably more than an apparently similar one next door.

For straightforward jobs we work on an hourly basis, welding from 55 € an hour, with a call-out of 25 € within Tallinn deducted from the bill if the work goes ahead. Anything beyond a small repair or single bracket normally gets a fixed quote instead, valid for 30 days, based on a drawing or photos and measurements you send us. That figure is what you pay, with no surprises added later.

How much size and steel thickness change the price

Size is the first multiplier: a canopy over a single doorway uses a fraction of the steel and welding time of one spanning a two-car driveway. Length, span and how far the frame cantilevers out from the wall all add up, because a longer unsupported span needs a heavier profile to stay rigid, not just more metal.

Steel thickness and profile matter as much as overall size. A stair carcass built from thin box section flexes underfoot and needs more welded gussets to feel solid, while a heavier profile carries the same load with fewer joints and less finishing work. Balcony bases carry people and sometimes furniture, so the profile is usually sized up rather than down, which shows in the material cost.

As a rough guide, our steel structures start from 250 € per job for the smallest brackets and single-span canopy frames, rising well beyond that for full stair carcasses or balcony bases, which is why a fixed quote after seeing the drawing or site is the only honest way to price these.

Workshop-built frames versus welding on site

A frame welded in the workshop and delivered ready to bolt into place is usually the more economical route when the shape allows it. Workshop welding is faster, the joints are easier to clean and finish properly, and the frame arrives needing only fixing and final adjustment on site, which keeps on-site hours low.

Welding on site becomes necessary when the structure has to follow an existing building line closely, when it is too large or awkward to transport assembled, or when it connects to an existing structure that cannot be measured precisely enough beforehand. On-site welding takes longer per metre of joint, needs protection from wind and weather, and often means more than one visit, so it costs more than the equivalent workshop job.

Access to the site plays into this too: a canopy on a street-facing facade in Kalamaja is usually simpler to reach than a balcony base on the courtyard side of a panel block, and that difference shows up in the quote as time rather than as a separate line.

How finish and corrosion protection affect the price

Steel left outdoors in the Estonian climate needs a proper corrosion-resistant finish, and this is not an optional extra so much as a genuine part of the structure's lifespan. A primed and painted finish costs less than hot-dip galvanising, but galvanising handles the freeze-thaw cycle and road salt splash better over the years, particularly on a stair carcass at ground level.

The choice of finish also affects turnaround: painted steel can usually be sprayed and left to cure locally, while galvanising means sending the fabricated frame out to a dip tank and getting it back before final assembly, which adds days rather than money to the schedule. Either way, the finish should be agreed and priced before fabrication starts, not decided afterwards.

What a quote usually does not include

A fixed quote for the steel structure itself does not usually cover everything around it. Knowing what falls outside the price avoids a second invoice arriving unexpectedly.

Materials we buy on your behalf carry a 10 % handling fee, or you can supply the steel yourself if you already have a supplier. Electrical work such as wiring a canopy for lighting is done separately by a qualified electrician, and we do not touch load-bearing walls or gas installations, so a job that reaches either point gets referred to the right specialist rather than absorbed into the quote.

• Foundations or concrete footings for a balcony base or stair
• Roofing or cladding material fitted onto a canopy frame
• Painting or galvanising beyond the agreed finish
• Any building permit paperwork with the city or building register
• Removal and disposal of an old structure being replaced

What sort of budget to plan for

A small canopy frame over a front door, built in the workshop with a painted finish, tends to sit at the lower end of the range, close to the 250 € starting point for straightforward steel work. A wider driveway canopy, or one that needs on-site welding against an existing wall, moves well past that.

A stair carcass for a house or a balcony base for a panel flat both carry more steel and more welded joints than a canopy, and if galvanising is chosen the schedule and price both move up accordingly. Sending clear photos, rough dimensions and a note of where the structure attaches lets us give a fixed quote that reflects your actual job rather than a generic estimate.