ᐅ Construction of a 144 sqm bungalow in Fichtenwalde (near Potsdam)
Created on: 16 May 2021 18:56
A
Acof1978
Then I would also like to introduce our building project here and keep you updated.
First, a brief introduction about us. He (42.5 years; controller in healthcare), she (38.5 years; full-time teacher), child (8.75 years; fully dependent). Our household net income is currently about €6,400 (approximately $6,800) plus performance bonuses, 13th-month salary, overtime, etc. We own a 1,462 sqm (15,735 sq ft) plot of land in Fichtenwalde. The remaining debt on the land is €37,000 (about $39,000). According to official land value guidelines, the land is valued at €146,200 (about $156,000) (€100 / sqm). The market price is around €400,000 to €600,000 (recent sale prices). We submitted the building permit application including the land conversion at the end of December. We expect approval by mid to late July.
The construction company is KB Brandis from Jüterbog. External site supervision will be handled by Bauherrenhilfe with 13 appointments.
Now about the house. It will be a 144 sqm (1,550 sq ft) bungalow plus a 12 sqm (130 sq ft) covered terrace with the following additions:
- Ceiling height 3.00 m (9.8 ft)
- Electric roller shutters (including smart home integration)
- Double-sided laminated windows (wood-colored; RC3 security rating)
- Brine-to-water heat pump with ground collectors due to water protection area (Bosch Compress 7800i LW)
- Hydraulic balancing of the underfloor heating
- Controlled residential ventilation with heat recovery (Bosch)
- Motion detectors from a security company
- 13 kWp photovoltaic system, including battery preparation
- 10 m³ (2,650 gal) cistern for rainwater use
- Doorbell with video function
- Wallbox preparation for electric vehicle charging
- Exterior lighting
Floor plan attached.
We have not yet finalized financing (although discussions have taken place). So far, we have invested up to €30,000 (approximately $32,000) from our own savings during the planning phase. This is almost all of our equity. However, we continue to save about €2,750 (approximately $2,920) per month. The monthly mortgage payment is expected to be around €1,650 (about $1,750) plus additional costs of approximately €200-250 (about $210-265) (taking into account the photovoltaic system). This means when we move into the house, we will still have savings of at least €1,500 (about $1,590) per month.
The construction contract will be signed within the next few weeks. The prices (recently discussed with the company) correspond to the offer and commitment as of September 2020.
The price per square meter of the house (according to the latest offer and full specification) will be €2,700 (about $2,870). This includes everything, such as painting, flooring, etc. The overall costs are structured as follows:
House: €378,000 (about $402,000)
Land conversion including reclassification: €25,000 (about $26,600)
Additional building costs: €40,000 (about $42,500)
Outdoor facilities: €25,000 (about $26,600)
Total financing volume: €468,000 (about $498,000)
First, a brief introduction about us. He (42.5 years; controller in healthcare), she (38.5 years; full-time teacher), child (8.75 years; fully dependent). Our household net income is currently about €6,400 (approximately $6,800) plus performance bonuses, 13th-month salary, overtime, etc. We own a 1,462 sqm (15,735 sq ft) plot of land in Fichtenwalde. The remaining debt on the land is €37,000 (about $39,000). According to official land value guidelines, the land is valued at €146,200 (about $156,000) (€100 / sqm). The market price is around €400,000 to €600,000 (recent sale prices). We submitted the building permit application including the land conversion at the end of December. We expect approval by mid to late July.
The construction company is KB Brandis from Jüterbog. External site supervision will be handled by Bauherrenhilfe with 13 appointments.
Now about the house. It will be a 144 sqm (1,550 sq ft) bungalow plus a 12 sqm (130 sq ft) covered terrace with the following additions:
- Ceiling height 3.00 m (9.8 ft)
- Electric roller shutters (including smart home integration)
- Double-sided laminated windows (wood-colored; RC3 security rating)
- Brine-to-water heat pump with ground collectors due to water protection area (Bosch Compress 7800i LW)
- Hydraulic balancing of the underfloor heating
- Controlled residential ventilation with heat recovery (Bosch)
- Motion detectors from a security company
- 13 kWp photovoltaic system, including battery preparation
- 10 m³ (2,650 gal) cistern for rainwater use
- Doorbell with video function
- Wallbox preparation for electric vehicle charging
- Exterior lighting
Floor plan attached.
We have not yet finalized financing (although discussions have taken place). So far, we have invested up to €30,000 (approximately $32,000) from our own savings during the planning phase. This is almost all of our equity. However, we continue to save about €2,750 (approximately $2,920) per month. The monthly mortgage payment is expected to be around €1,650 (about $1,750) plus additional costs of approximately €200-250 (about $210-265) (taking into account the photovoltaic system). This means when we move into the house, we will still have savings of at least €1,500 (about $1,590) per month.
The construction contract will be signed within the next few weeks. The prices (recently discussed with the company) correspond to the offer and commitment as of September 2020.
The price per square meter of the house (according to the latest offer and full specification) will be €2,700 (about $2,870). This includes everything, such as painting, flooring, etc. The overall costs are structured as follows:
House: €378,000 (about $402,000)
Land conversion including reclassification: €25,000 (about $26,600)
Additional building costs: €40,000 (about $42,500)
Outdoor facilities: €25,000 (about $26,600)
Total financing volume: €468,000 (about $498,000)
N
Neubau202228 Apr 2022 19:54Hausbau 55 schrieb:
What insulation thickness do your hot water pipes and the supply and return lines have? I don’t think installing them directly on the concrete slab is ideal concerning heat loss.Regarding this, I found the following in the scope of work description.
H
Hausbau 5528 Apr 2022 20:07According to the building energy regulations, everything might be installed correctly, but I can’t assess the details. However, it can be done better than just the standard.
We have 130 mm (5 inches) of insulation under the screed, consisting of 2 layers of 50 mm (2 inches) 0.032 insulation and a 30 mm (1 inch) stapling roll. First, a complete 50 mm (2 inch) insulation layer was installed, and only then were the plumbing and heating installations laid on top. The second insulation layer was installed crosswise. This means all hot water pipes are within the pipe insulation (single layer) and additionally surrounded by at least 50 mm (2 inches) of insulation layers.
We have 130 mm (5 inches) of insulation under the screed, consisting of 2 layers of 50 mm (2 inches) 0.032 insulation and a 30 mm (1 inch) stapling roll. First, a complete 50 mm (2 inch) insulation layer was installed, and only then were the plumbing and heating installations laid on top. The second insulation layer was installed crosswise. This means all hot water pipes are within the pipe insulation (single layer) and additionally surrounded by at least 50 mm (2 inches) of insulation layers.
Hausbau 55 schrieb:
This may all be installed correctly according to the Building Energy Act, but I cannot assess the details. However, it can be done better than just the standard.
We have 130 mm (5 inches) of insulation under the screed, consisting of two layers of 50 mm (2 inches) 032 insulation and a 30 mm (1 inch) stapler membrane. First, a full insulation layer of 50 mm (2 inches) was laid, then the plumbing and heating installations were placed on top. The second insulation layer was laid crosswise. All hot water pipes are therefore located within single pipe insulation and at least 50 mm (2 inches) additional insulation layers. If you are going to make that effort, I would have used aluminum-foil-faced PIR insulation under the hot water pipes right away.
In new constructions, fixing the pipes to the concrete slab is common practice.
H
Hausbau 5528 Apr 2022 20:18TmMike_2 schrieb:
If you’re going to put in that much effort, I would have used aluminum-faced rigid insulation under the domestic hot water pipes.
In new construction, securing the pipes to the slab is common practice. For our KfW Efficiency House 55EE, 130 mm 0.032 insulation was sufficient. I actually had your suggestion in mind as well. However, the additional cost wasn’t worth it for me.
The pipes were installed in a crisscross pattern on the lowest insulation layer at no extra charge.
askforafriend28 Apr 2022 20:18TmMike_2 schrieb:
In new constructions, securing the pipes to the foundation slab is common practice. No, it depends on the standard. Here, it is according to the Energy Saving Ordinance.
Hausbau 55 schrieb:
For our KfW Efficiency House 55EE, 130 mm 032 insulation was sufficient. I actually had your suggestion in mind, but the extra cost wasn’t worth it for me.
The crosswise installation of the insulation on the lowest insulation layer was included at no extra charge. Proper staggering of the second layer is also required. I thought you installed the insulation yourselves... sorry
askforafriend schrieb:
No, it depends on the standard. Here, of course, according to the Energy Saving Ordinance (EnEV). If there are 10 cm XPS (4 inches) under the slab, it also works with KfW40. I thought Tom had this insulation but I’m not sure anymore.
I only said it’s unfortunately common practice.
Heat loss is negligible even with a heat pump,
just a lower COP due to the loss.
@Neubau2022 Is the wall in front of the bathroom ventilation pipe fully built out with drywall?
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