Floor plan ideas and cost estimation for the renovation of a semi-detached house from 1939

You should also show that the ground floor (EG) is missing here and causing confusion.

The ground floor is currently identical to the upper floor. Therefore, I did not mention it separately.

By far the (dangerously!) too high item is the estimation inaccuracy. It is in the six-figure range here!

I therefore strongly advise you to plan very precisely. Many renovation clients (and their old-building-inexperienced architects) build on the basic misconception that performance phase 1 can be ticked off as a mere formality in existing buildings. The opposite is true; the effort is rather multiple times compared to new construction. Otherwise, you have to put "maybe" in front of every item and "or double that" behind it. Although this is not yet the worst case, it usually evens out in this magnitude.

We will do the exact planning after measuring tomorrow. Which effort is multiple compared to new construction? Performance phase 1 or in general?
In the original thread, everyone recommended renovating because new construction would be "financial suicide." Not anymore?

Record and describe the status and measures very precisely!
Also, the energy consultant should clearly state which conditions apply regarding the subsidies for each measure.

Good point, thanks!

I currently lack the time to recap, but most of what I said in your old thread will also apply in the changed project horizon. At least I don't feel the need to write more here today.

What do you mean still applies?
There it was essentially about the question: new construction or renovation.

Best regards

I would rather access the ground floor apartment from the "balcony," meaning the front door there, and you keep the staircase. 1. more cost-effective, 2. I find the straight staircase outside not practical for everyday life with 3 children.

Very good point! Thanks! However, then you would first have to go down the stairs and around the house to get to the garden, as is the case now. The charm of the architect's proposal is that you get out of the car and can immediately go upstairs with the groceries. And the garden is not far either.

Energy-efficient renovation can be doubly subsidized through the ground floor granny flat. You should make use of that. Yes, building has become expensive, and renovation as well. Where was north again?

The energy consultant mentioned that briefly. Then again not. What do you recommend then considering the overall goal?

I think it can work without a lot of fuss about floor plan changes like here.

The fuss is necessary since we now have three little ones. :-) Therefore, we need three children's rooms. In the process, we naturally wanted to modernize everything at once. If it becomes utopian, we’ll have to cut wishes. However, the three children's rooms, office, utility room, and separate entrance are must-have criteria. And if new floors need to be installed, underfloor heating also makes sense. That’s what I thought.

and where is the facade insulation item?

Good question. A 30-year-old and 5-6 cm thick polystyrene insulation is already on there. Of course, not modern but not nothing either. But good question where that item is. Probably under "doesn't really do much anymore."

However, you would first have to go down the stairs and around the house to get to the garden, just like now.

Well, in the medium term, one will probably create a terrace with stairs on the upper floor?! Wasn't there already one? Or did I just imagine one there?

that you get out of the car and can immediately carry the groceries upstairs.

Easier said than done without an intermediate landing.

The fuss is necessary because we now have three little ones. :)

Please read carefully again. I said “no fuss like here.” Others change every wall.

A 30-year-old and 5-6 cm thick styrofoam insulation is already on. Of course not modern but also not nothing. But good question where that budget item is. Probably under “doesn't suffice anymore.”

You are somehow obliged if you want to change windows and … use the balcony as living space. There has to be some sort of envelope around everything.

The cost estimate from an energy consultant can be acknowledged, nothing more.

Plan cleanly and get offers.

The ground floor is currently identical to the upper floor. That’s why I didn’t mention it separately.

It can’t be the same at least in terms of heights. A renovation is a holistic matter; you can’t simply exclude the mum’s floor as a black box. Not least because a significant operation (separation of the entrances) is planned here.
At times, your project reminds me of the story of , to whom I incidentally once advised to consider

I think at its core it’s simply about a separate front door for “grandma” (so she doesn’t disturb others when she comes home very early from the disco?). One thing I can guarantee for sure: that grandma will feed those beloved kids chocolate at her own discretion, separate front doors will not prevent that.

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We will do the exact planning after tomorrow’s measurements. Which effort is multiple compared to new construction? Phase 1 or generally?

The effort of phase 1 (basic evaluation). In an existing building it takes a fundamentally different form but by no means less importance. You must not proceed half-heartedly here but rather even twice as thoroughly.

Originally, everyone recommended renovation because new construction would be “financial suicide.” Not anymore?

No one here (or elsewhere) has changed their opinion. But you read quite sloppily.

What do you mean still applies?
It was essentially about the question: new construction or renovation.

Everything I wrote to you (not superficially read) in the autograph book still applies. And both threads are about the same thing: namely that the project, approached creatively without a plan, becomes unaffordable, but the actual need does not require any harakiri.

Your program has a volume on the requirements level of a little over one quarter million, and with two simple ingredients (sloppy basic evaluation and “thoughts are free” planning) you manage to conjure up three quarters of a million out of it. If that’s not qualification for an EU commissioner! – quit your current profession and go into politics.

A 30-year-old and 5-6 cm thick polystyrene insulation is already on.

The kind of essentials you sneak in bit by bit leave me speechless.
That even tops your recent stroke of genius (the new main entrance via the specially constructed fire escape, see reading tip at the beginning of this post).

I would rather access the ground-floor apartment from the "balcony," meaning have the front door there, and you keep the staircase. 1. cheaper, 2. I find the straight outdoor staircase not practical for everyday use with 3 kids. Energy renovation can be doubly subsidized through the granny flat on the ground floor. You should make use of that.

Hi,

Great tip! Discussed and agreed upon by everyone! Thanks! We'll do it that way. The garden will initially be accessed as usual or, as you said, made separately accessible later on.

I will google the double subsidy.

We might also keep the balcony. Let's see how the current space holds up.

Best regards