House purchase prefabricated house from 1976 by the company Streif - What to renovate?

Good day dear readers,

I would like to ask you something, or several things. Probably some of this has come up here more often, so I ask for your patience. I have already been able to find out some things in preliminary research, but some questions remain for which I need your advice.

1. The fundamental question whether you would ALWAYS recommend an indoor air measurement / pollutant measurement before purchase. As you know, the market is not always that simple, and while one person still checks, does things, and so on, another simply buys impulsively without thinking.

Span boards presumably still containing formaldehyde from the year 1976 might be installed, wood preservatives, etc. The facade is an Eternit panel facade.

What I find positive about the house is the fact that it was renovated around 2010. Done independently, which may be an advantage for some or a disadvantage for others regarding documentation.

What was renewed:

- "Basic renovation 2010," but what exactly this includes is unclear; I try to list what I know.
- Roof completely expanded and insulated inside (with what?) Outside old
- Bathroom renewed
- Living area fully tiled as well as the basement (a matter of taste)
- Heating renewed (Sieger low-pressure oil boiler, so no replacement needed <30 years) however, the radiators remained the old ones.
- Terrace
- Electricity and water (copper)

What I noticed is that in the basement ceiling there are some kind of Styrofoam panels installed. These presumably contain formaldehyde. There used to be the Bio Check F from Dräger in combination with Stiftung Warentest. This allegedly is no longer available. It was quite informative for self-testers.

Data on the property

About 150 sqm living space distributed. 90 sqm on the ground floor, and 60 in the attic plus the basement included. Garage is available, as well as roughly 650 sqm of land. The house was evaluated and factored in by Interhyp and would cost about €150,000 just for the house. The land value was already deducted. An interesting question at this point is what estimated price you would give based on this data (also considering the current situation) from the gut feeling.

2. What you would personally still recommend for renovation. Gas heating? Solar support for hot water? Fireplace? I am currently still clarifying which pollutant residues are still present in the house.

How high is the total purchase price and where exactly is the property located? I would not necessarily value the house and the land separately if there are no undeveloped plots nearby as comparison objects. The picture seems to show a decent view at the back?

150 sqm does not fit the picture at all, or are you including the basement in the 90 sqm ground floor? Then the 60 sqm attic somehow doesn’t add up. Does the attic have dormers/windows at the back? Otherwise, with such a shallow roof pitch, it is hardly usable as living space. I somehow see it more as a 70 sqm bungalow with an attic peak where you can just barely stand in the middle.

Many would only call it a "full renovation" if windows, doors (interior/exterior), and external wall insulation had also been done. The roof tiles are also eventually reaching the end of their lifespan. If water/electricity has really been redone everywhere, the interior wall structure may also have been renewed, which possibly partially solved your pollutant problem.

But to come to a conclusion: if the total price fits the location, you can make something out of it (e.g., possibly also tear it down), but the house would not be worth 150,000 euros to me. For that, you can almost get a new build like Town & Country according to the current energy saving regulations, etc.