Complete renovation of house built in 1973

Hello everyone,

the house purchase is getting within reach. However, the object of desire is from 1973 and in worn original condition. Key data:
*150m² living space (ground floor + upper floor, of which on the upper floor 2 rooms, shower bathroom and attic space. The attic space is to become the air space in/above the living room)
*Gable roof
*No basement
*Oil heating (location kitchen, not utility room)
*Plastered facade without insulation

Renovation plan (everything out, everything new) with my estimated prices:
*Demolition in own work, possibly two walls by craftsmen: 1,000€
*Roof insulation above rafters, 3 Velux windows: 25,000€
*ETICS with plaster: 20,000€
*Oil condensing boiler, solar, radiators, possibly pipes: 25,000€
*Ventilation system (necessary???): 10,000€
*Electricity on the ground floor: 10,000€
*Windows (1 large sliding door element, 1 floor-to-ceiling door, 5 double casements, 1 floor-to-ceiling double casement, 4 normal, 1 triangle): 20,000€
*Interior doors (5 normal, 1 double casement with glass) and front door: 7,500€
*Bathroom (nothing fancy) and guest WC: 15,000€
*Living room ceiling beams exposed, drywall + filling on the slopes: 2,500€
*Floor coverings ground floor (hallway and bath ceramic, otherwise planks/parquet): 15,000€
*Upper floor (2 rooms + shower bath) material for own work: 10,000€

I would have everything done except the upper floor (own work), possibly smaller packages myself.

1. What is generally missing at first glance?
2. How realistic is my estimate?
3. How high/expensive should I calculate planning and supervision by an architect?

Many thanks for your help,
Best regards,

Dirk

Good evening Dirk,

the house purchase is coming within reach. However, the object of desire dates from 1973 and is in a worn original condition. Key data:
*150m² living space (ground floor + upper floor, of which on the upper floor 2 rooms, shower bath and attic room. The attic room is to become the air space in/above the living room)
*gable roof
*no basement
*oil heating (located in the kitchen, not utility room)
*plastered facade without insulation

Have you already viewed the property with an expert?

Regarding your prices - especially since you are from the industry, you should know that figures for old buildings often turn out to be nothing but smoke and mirrors. There is always a "new" construction issue that will stall the renovation.

I would like to urge you to inspect the property with an expert - if this has not already happened - and ask for an appraisal. From this appraisal, you will understand to what extent the property needs to be renovated. Based on this, you or the expert can tender the trades; this way, you will have figures to work with. Furthermore, there are subsidies for the renovation; you should also take a look at the KfW pages, because these subsidies are not to be applied for subordinately.

Rhenish greetings

Is there now an update on the costs, or how far along are you with the renovation?

Regards.