Floor plan design single-family house approx. 250 sqm with granny flat

As few people as possible should come to the entrance -

Oh, so you want to intercept all packages or visitors at the front? I personally find that a bit strange, even if you are introverted.
I think there should be more than just the property boundary in front of an entrance. You only see the entrance itself in full with the house; at 2 meters distance that’s not possible. Somehow it’s also like casting pearls before swine...

I quickly looked at the floor plan in detail. Without measurements, however, one can only guess quite a bit. (I’m leaving windows aside)

I find the bathroom and bedroom of the annex apartment way too cramped.
The objection that cycling above will cause noise is important to me.

The main house’s toilet is tiny, so you bump your head on the sink.

In front of a stove, there should/must be at least 1 meter of space, otherwise (from my own experience) the cushions get scorched.
The chimney should be planned more towards the ridge than at the eaves. It must (I think) be built higher than the ridge anyway.

The dining area is tight; with comfortably occupied chairs, you can’t walk around the table anymore. The table is quite small.

The bathrooms on the upper floor are also very tight. The shower in the master bath needs a door.

Overall, I don’t find the parents’ area well thought out.
Is it the case that all cabinets are drawn to fit? So no standard sizes?

Regarding the budget: even with an EL I rather see a 4 than a 3 followed by 000.

but of course it should also be rentable later,

Then a storage room would have to be included as well. Also think about how to dry laundry.

I am currently comparing this with our former old apartment,

From the perspective of a younger person than at 70. Possibly a walker must be parked accident-free in the granny flat. Older people move more uncertainly, but also need space to move, in front of and next to a toilet. To put it plainly: incontinence pads must also be within reach somewhere and be easily foldable. Everything should be within reach without knocking something over due to tightness.

for chilling on the sofa, watching movies, etc. maybe even cozier.

Where should the TV go? I would question the sofa position there.

Oh, so you want to grab all packages or visitors at the front? I personally find that a bit odd, even if you are introverted.
I think there should be more than just the property boundary in front of an entrance. You only see the entrance in its entirety with the house, not possible at 2 meters distance. Somehow like pearls before swine..

I understand the point and in an ideal world there would be more space in front of the entrance, but with limited property size we have to choose between more garden (we would possibly also like space for a pool) or a more "representative" entrance, and we prefer to take the garden. We once considered the entrance on the gable side, but we really don't like that for the rest of the house layout. I also find it quite nice to be able to take out the trash practically in pajamas without being seen from the street. As I said, I can completely understand what might bother someone about the planned entrance layout, but I think the compromises involved with other variants would bother us more.

I quickly looked at the floor plan in detail. Without dimensions, however, you can only guess quite a bit. (I leave windows aside)

For the granny flat, I find the bathroom and the bedroom much too small.
The objection that there will still be cycling and noise above is important to me.

We will reconsider the bedroom, but I see the bathroom differently. We have had a bathroom with almost identical dimensions before and it was absolutely okay.

The WC in the main house is tiny, so you bump your head against the washbasin.

I don’t fully agree here either. In our current apartment, we have a WC that is even slightly smaller and find it absolutely unproblematic. Despite being 1.80 m tall, I have never bumped into anything there. Of course, bigger would be nicer, but the size does not seem that bad to me after all.

There should/must be at least 1 meter of space in front of a stove, otherwise the cushions will singe on you (from personal experience).
The chimney flue should be planned closer to the ridge than the eaves. It must (I think) be built higher than the ridge anyway.

Since the fireplace will be a gas fireplace, the chimney flue can be where it is and is also fine in terms of height. As far as I know, the legal requirement to be near the ridge only applies to stoves with solid fuels. The sofa currently has 87 cm distance to the fire (the part in front is just the mantlepiece), but the distance can surely still be increased a bit.

The dining area is tight; with fully occupied chairs, you can no longer get around the table. The table is quite small.

I have to check the table size; I think 180 cm (planned with the existing antique dining table). I'm not sure I see the need to get around the table to reach the front windows when all chairs are occupied. The exit towards the porch is, I think, not a problem, there is enough space. We might possibly still enlarge the room a bit.

Bathrooms on the upper floor are also very tight. The master bathroom shower needs a door.

I will add that tomorrow; many details are still missing. Where exactly are the bathrooms too tight otherwise? The passage widths seem fine to me everywhere. I already mentioned above that we are not the type for large spa bathrooms, so that is not a priority for us, but of course we do not want to create tiny rabbit hutches. Exactly where do you see problematic narrow spots?

Overall, I don’t find the parents’ area well-rounded.
Are all the cabinets drawn to fit? So no standard dimensions?

The cabinets are 60 cm deep and we planned using Ikea Pax dimensions. The program recognizes when you want to depict wall cabinets and places a cover strip in front of small gaps at the edge. That’s how we would do it in reality as well; the Pax series is great for custom-fitting wall cabinets.

Regarding the budget: even with EL, I see more a 4 than a 3 before the 000.

I cannot quite understand that in view of the offer we already have. The house from the offer has similar amounts of window space, more doors, and stylistically is, as mentioned, very comparable.

Then a storage room would have to be included as well. Also think about how to dry laundry.

That is then more of a criticism of the size rather than just the layout, right? I generally find it a bit difficult to implement all points in 50 sqm. A tumble dryer should be above the washing machine, a clothesline / drying rack could also be placed outside. I consider a dedicated storage room with space for laundry ambitious at that square footage, or am I mistaken?

From the perspective of someone younger than 70. Perhaps a walker needs to be parked safely without risk of falling in the granny flat. Older people move more uncertainly, but also need space to move, in front of and next to a toilet. To put it bluntly: incontinence pads also need to be kept somewhere handy and easily put on. Everything should be within reach without knocking things over due to tightness.

Opposite the bathroom, there would be a cupboard where such things could be stored. But okay, what would you consider the minimum necessary size for a senior-friendly bathroom? 120x120 cm of movement space in front of each sanitary fixture?

Where should the TV go? I would question the sofa position.

The TV is supposed to go on the wall facing the granny flat. A built-in shelf is planned there (my husband enjoys working well with wood and is interested in custom-made installations) with space for books, decorations, and the television. However, we watch relatively little TV, so it wouldn’t be the main sofa activity. We actually like the sofa position as it is because we like the basic concept of the "formal living room" with seating facing each other and a fireplace as the focal point. It surely isn’t the typical popular "chill corner," which we aren’t fans of anyway (corner sofas and "lounging landscapes" are the furnishing nemesis, and I don’t even find them comfortable).

I basically like the concept as well.

What immediately caught my attention again is the staircase. What floor height is planned? I think the staircase looks very tight.

And just two or three more keywords:
- Bedroom, bed head next to the passage area
- The way from the kitchen to the terrace always goes past the table - right? Could be a bit tight.
- Living area is rather not a quiet area, but actually a passage area

And, a note, I would always plan Pax wardrobes with 65/66 cm depth because of the doors and the shell dimensions.

That's more of a criticism of the size rather than just the layout, isn't it?

Well, there are requirements for what a rental apartment must have.
However, I'm not exactly well-versed in legal matters here.
How to design a senior-friendly or also barrier-free apartment can also be looked up.

You have a lot of personal work planned. Don't forget that you also still have a full-time job. Managing a lot of personal work on the side is only possible to a limited extent.