Financial planning, monthly additional costs - Did that work out for you?

Hello Ralf, as Gabriele writes, so did the calculated budget suffice? Yes/No or why not? Would no longer be relevant to me because, cost-wise, I am done except for lawn, bushes, and fence.

Then the headline somehow does not fit the question. The headline talks about monthly costs. In general, I can absolutely understand wanting to get an overview of the monthly costs once in a while. For me, that is absolutely part of planning; if you didn't have a house before, you quickly forget something. Not accurate to 5€, but 100-200€ per month really add up.

Right, a typo has crept in there.

We were €10k over the financial plan, which included a €15k buffer. I would almost call that a bullseye.
Our planned budget was set before we had a first offer. All in individual contracts, 150m² Lower Saxony.

The basis for the planning was the architects' estimate, which I adjusted (increased) for the interior finishing.

These were approximately the deviations:
-€5k shell construction with roof
+€10k heating, ventilation, electrical, sanitary
+€10k interior finishing
€0 construction incidental costs (no slope)
+€10k exterior facilities
€0 initial inventory and kitchen
-€15k previously planned buffer
= €10k over the plan for financing

Reasons for deviations were the unrealistic plans of the architects for technology and finishing, which slipped through due to a lot of ignorance on my part. Electrical work, for example, was planned at €5k but actually cost €12k, which is obviously still considered cheap.

The calculation was without own contribution. During the construction phase, we planned the heating ourselves (bought ourselves, own risk) and saved €15k compared to the offers, otherwise, that would have been added on.

When selecting tiles, walls, bricks, colors, staircase, etc., we took what we liked; we also had no reference prices like those from the main contractor as a planning basis. I think that accounts for about €15k compared to "simpler," I don’t know exactly.
In the awarding, we also didn’t fight for the last euro but decided based on sympathy and gut feeling for certain companies.

We had no financial surprises during the construction phase due to unforeseeable things. The final invoices from almost all trades were at or below the offer price.

PS: now comes the garden. Planned in the financing with €2k from an apartment where we had two potted plants. €1k is already gone for 7m of fence. What’s still to come: renewing 50 meters of hedge, garden shed, 500m² lawn, plants, beds, ... Could get tight.

We were 10k€ over the financial plan, which included a 15k€ buffer. I would almost call that a direct hit. Our planned budget was set before we had any initial offers. All subcontracted, 150m² Lower Saxony. The basis for the planning was the architects' estimate, which I adjusted (increased) for the interior work. These deviations we had approximately: -5k€ shell construction with roof +10k€ heating, ventilation, electrical, plumbing +10k€ interior finishing 0€ construction incidental costs (no slope) +10€ outdoor facilities 0€ initial inventory and kitchen -15k€ previously planned buffer = 10k€ over the plan for financing The reasons for deviations were those unrealistic plans of the architects for technology and finishing, which also slipped through me due to a lot of ignorance. Electrical was planned, for example, at 5k€, actually cost 12k€, which is obviously still considered cheap. Calculated without own contributions. During the construction phase, we planned the heating ourselves (bought it ourselves, own risk) and saved 15k€ compared to the offers, otherwise that would have been added on. When selecting tiles, walls, bricks, colors, stairs, etc., we took what we liked, we also had no reference prices like with the general contractor as a planning basis. I think that amounts to about 15k€ compared to "simpler," I don't know. We had no financial surprises in the construction phase due to unplannable things. The final invoices from almost all trades were at or below the offer price. PS: now comes the garden. Planned in the financing with 2k€ from an apartment in which we had two potted plants. 1k€ is already gone for 7m of fence. What still has to be done are renewing 50 meters of hedge, garden shed, 500m² lawn, plants, beds, .. Could be tight.

Under the given conditions, one can safely consider it a direct hit. Regarding the 2k€ for the garden, I just really had to laugh. You optimist...

Not at all with us. As average earners, we would have long since abandoned the project. Positions that have hit us hard so far: - Disposal of rubble from demolition with multiple sampling + 300% - Excavation and disposal +> 500% - additional retaining wall Let's see what else comes. All other increases have resulted from our wishes, such as the special glass system.

Not at all for us. As average earners, we would have buried the project a long time ago. Items that have blown up in our faces so far: - Disposal of demolition rubble with multiple samplings +300% - Excavation and disposal +> 500% - additional retaining wall Let's see what else is coming. All other cost increases have resulted from our wishes, such as the special glass system.

That's quite a markup. You know how it goes... Great house, great prices My window installer told me a month ago that, due to a new DIN standard, floor-to-ceiling windows will increase in price by 30% compared to 2018. He said he only offers the prescribed construction now. But if I already read about glass systems, you probably don't care anyway