Buying a post-war house, top or flop?

Hello everyone,

I should have reached out here much earlier. Because now it’s practically five minutes to twelve.
My wife and I have found a used end-terrace house in Rostock to buy and now almost everything is settled.
Our gut feeling and my (construction) amateur knowledge speak in favor of the house. Also because the plot is available at a great price.
However, I have quite a few questions burning under my fingers and I hope you can answer some of them briefly and concisely.
The facts: The house was built in 1945
And was partially renovated in 1996/97 according to the owner.
Here is the most important question straight away.
Is the wall construction good/bad/so-so
From outside to inside.
Plaster layer - 8cm styrofoam - hollow concrete block (thickness unknown) - mineral wool (thickness also unknown) and in front of that Fermacell as the interior wall.
Does that make sense for now or should something be done about it as soon as possible?
I have imagined (probably exaggerated) that in the next few years, when the roof is converted, to gut the bottom floor and build a new interior wall in front of the exterior wall (also to replace the drywall walls with solid ones simply for reasons of thermal insulation and soundproofing). The current suspended drywall sounds quite hollow and I don’t like that.
Are there any other options or is it better to leave it as it is because it’s sufficient?
2. Important point is the outer gable: currently also from outside to inside: tar shingles - wooden construction - mineral wool.
Is it possible to build such an outer wall effectively in drywall construction or use the existing one? The rest of the roof was completely insulated and reroofed with clay tiles during the renovation.
The heating system now also has an H-label but according to the chimney sweep runs perfectly, nevertheless, I have already set aside money to treat myself to a solar thermal system including a combi boiler.

These two questions are really important for me to clarify and I hope you can help me.

Many thanks

So in your case, I would have the exterior wall assessed. By a professional. Like the rest as well. At first, it sounds like it is OK. I can't say anything about the [ZumGiebel]. You may have to renew the heating anyway, depending on what kind of boiler it is. And don't just do anything. Stay calm and gather information.

The year of construction was clearly a time of scarcity. In the Soviet Union, there was certainly no less than in the Western zones, "Hunger is the best cook" also in the selection of building materials and constructions. In this respect, you never get picture-perfect examples of optimally built houses from this time.

Plaster layer-8cm styrofoam-hollow concrete block (thickness unknown)-mineral wool (thickness also unknown) and in front of that Fermacell as interior wall.

Much of that sounds unclear to me; I don’t get a clear picture of it.

to build a new interior wall in front of the exterior wall (also to replace the drywall walls with solid ones).

By interior wall you probably mean the inside of the exterior wall. Solid practically means "significantly heavier," which requires a structural engineer, and he in turn needs clarity about the existing construction.

I like watching cheerful television plays with brave builders but wouldn’t want to imitate them ;-)

So basically, the house is considered habitable, and I am also willing to do a lot myself. Regarding 11ant, yes, I had almost suspected that about the "load-bearing capacity." However, I would have that clarified anyway when the time comes. Why you don't understand my written scheme of the wall construction, I really can't comprehend :-/ I find it clear... only that I don't yet know how thick the stone and the insulation layer on the inside are.

So basically the house is considered habitable, and I am also willing to do a lot myself.

With all due respect to the courage of the Vikings, there is unfortunately more than a newspaper between "habitable" and "current building regulations."

Maybe the high density of West Germans in the Rhineland has spoiled me, but with such a vaguely "documented" actual condition, I consider the modernization project a considerable risk.

From outside to inside.
Plaster layer - 8 cm Styrofoam - hollow concrete block (thickness unknown) - mineral wool (thickness also unknown) and in front of that Fermacell as interior wall.

Plaster is clear, Fermacell and mineral wool as well. The 8 cm Styrofoam makes me suspicious; at least I don’t associate that with the original year of construction. Hollow concrete block presumably means a cement block with large hollow cores; "thickness unknown" doesn’t sit well with me.

At that time, 25 cm solid bricks or similar dimensions with other materials were common. Possibly also thinner, 17.5 cm for example. The latter would be a magnitude already known from current wall constructions with ETICS. In connection with

And according to the owner, partly renovated in 1996/97.

I speculate that the Styrofoam shell was retrofitted for heating cost reasons. Mineral wool / Fermacell maybe as well.

If I were faced with this project, more knowledge instead of hope would be comfortable for me.

Does "end-terrace house" just mean the closed form of development, or are these houses "siblings," so that one of the neighbors might already know more?

Personally, I would find somewhat older houses more likeable; in the post-war period there were often "improvisation constructions" that did not quite follow the pure doctrine. You can find quite a few—although highly remarkable, yet nevertheless: "curious" executions.

You write that the property is available at a super price. Would it still be worth the price if you had to tear down the house?

The year of construction suggests a lot of improvisation, and the partial renovation was already 20 years ago. Mineral wool inside on the wall is already strange. Who oversaw the last renovation? Or did the previous owner just tinker with it as they pleased?