ᐅ Cantilevered Balcony Added Later: Costs? Feasibility?

Created on: 25 Feb 2016 10:59
S
snackys
Hello everyone,

I have been the owner of a top-floor apartment for a little over a year now. Unfortunately, our balcony faces the main street, so we would prefer to add a new cantilevered balcony afterward.

However, we have no idea yet how much this might roughly cost.

Since the owners below are not aware of my plans yet, I would like to find out what the process and approximate costs might be regarding building permits / planning permission, creating an opening, waterproofing, balcony slab, and so on.

The desired balcony dimensions should be approximately 4.5m x 2.5m (15 feet x 8 feet), give or take.

There is already a balcony on the upper floor (see photo), so the neighbors would also benefit from our balcony because they would then have a roof over their heads.

I imagine a balcony supported by posts would be quite challenging.

Surely someone here has experience with adding a balcony afterward and can recommend reliable contractors. (For the opening and similar work, I assume individual trades need to be hired, right?)

I would really appreciate any information on the approximate price range, so I can assess whether this project is financially feasible!

Thank you very much for your help.

PS: The photo attached is from the listing of the lower apartment.

Two-story yellow detached house with balcony, terrace, and garden under a blue sky.
Uwe8226 Feb 2016 07:04
After that, the other owners have to approve first, as all of them must agree without exception. I’m not sure whether the building authority or the other owners represent the bigger hurdle.
O
ONeill
26 Feb 2016 08:10
I also don’t see it as an advantage if my nice, open balcony suddenly gets covered by a concrete slab. To be honest, I wouldn’t agree to that.

But I’m keeping my fingers crossed for you!
B
Bauexperte
26 Feb 2016 10:20
ONeill schrieb:
Asking for a rough estimate before contacting the building authority / planning office seems to be the more sensible order.
I see it differently and definitely do not want the original poster to *solely* rely on my estimate. Even if a homeowner who has gone through the same procedure responds here, the final total cost for the original poster might not necessarily be the same. There are so many factors to consider... and I haven’t even mentioned involving the property owners.

In the consultation at the building authority / planning office, the original poster will not only receive information about the feasibility of their idea but also about the process involved... or possibly not.

Regards, Bauexperte
R
rupapu
26 Feb 2016 12:29
Friends had a balcony built similar to the existing balcony shown in the picture. However, it stands on six columns with concrete foundations. The structure is made of galvanized steel beams. The railing is powder-coated with glass inserts (white glass for privacy) and a stainless steel handrail. The balcony size is approximately 4 x 5 meters (13 x 16 feet). It is covered with wood. Below it is a metal sheet to keep the area underneath dry, for example, to store garden furniture in winter.

Additionally, there is a staircase leading down.

The cost was 17,000 euros (including building permit / planning permission and the necessary structural engineering). That was already a reasonable offer.

They could have saved about 1,000 euros by choosing less expensive wood. There was probably also potential to save on the railing.
S
snackys
28 Feb 2016 12:37
Thank you very much for the many responses.
Whether the other owners will participate still needs to be clarified.
They actually wished for a roof over their balcony when they bought the house.
That’s something I could offer them.

In the meantime, I have been in contact with several balcony builders.
I have now received a written quote.
It doesn’t look too bad—what do you think?


Angebotsliste Balkonbau mit Kosten, Geländer und Entwässerung



Dokumentenseite über Balkonoberboden mit Betonwerksteinplatten und Verlegeabmessungen 400x400x40 mm



I would like to have the above-mentioned offer modified so that instead of these concrete slabs, I would later have Bankirai wood planks installed.
Is such a support board sealed, or does it still need bitumen on it?
What exactly is meant by these ‘Baucompactplatten’?

If the static calculations with these tie anchors and the size of the balcony really work out, I would be happy.
That would put me at just under €14,000 for the balcony.
I’d still need a roofer for the connection and gutter, about €400 (?).
Bankirai wood around €800.

What rough costs should be expected for creating an opening with two floor-to-ceiling windows plus a door?

Are there any costs I might have forgotten?

Thank you very much for your help!!
jaeger28 Feb 2016 15:20
If desired, additional electrical work for sockets or lighting.