ᐅ Converting a Bungalow into a Single-Family Home – Costs, Energy Efficiency Funding & Planning
Created on: 1 Jan 2021 21:46
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FuxxBauHello everyone,
We are planning to build or buy a single-family house. Currently, we are looking at a bungalow with about 110m² (1,184 sq ft), which we would convert into a single-family home with a gable roof. For a new single-family house, we would budget just under 300,000€ plus the cost of the land, additional expenses, utility connections, garage, garden, kitchen, walls, floors, etc.
The price would include finishing the attic, underfloor heating, decentralized ventilation, roller shutters, two gable dormers typical for manor-style houses, and KfW 55 energy standard. The house would be about 180-190m² (1,937–2,045 sq ft). All this without a basement.
What do you estimate the cost would be to expand the bungalow to about 180m² (1,937 sq ft)? The foundation slab, utility connections, and windows could be retained. About three-quarters of the exterior walls could remain, and a few internal walls would need to be altered. The gable roof should have long dormers on both sides. The ceiling would need to be renewed, and the kitchen and bathroom downstairs remodeled. The insulation would have to be renewed on the outside, and the entire exterior recladded with facing bricks.
What would the value of the bungalow be if it were credited towards a new build? It dates back to the 1970s but has been continuously maintained.
There is a wide price range for renovations online. If you even have rough cost ranges broken down by trade, that would be great. I want to renovate/convert to meet the KfW 55 standard to take advantage of the 48,000€ funding available through program 430.
Best regards
We are planning to build or buy a single-family house. Currently, we are looking at a bungalow with about 110m² (1,184 sq ft), which we would convert into a single-family home with a gable roof. For a new single-family house, we would budget just under 300,000€ plus the cost of the land, additional expenses, utility connections, garage, garden, kitchen, walls, floors, etc.
The price would include finishing the attic, underfloor heating, decentralized ventilation, roller shutters, two gable dormers typical for manor-style houses, and KfW 55 energy standard. The house would be about 180-190m² (1,937–2,045 sq ft). All this without a basement.
What do you estimate the cost would be to expand the bungalow to about 180m² (1,937 sq ft)? The foundation slab, utility connections, and windows could be retained. About three-quarters of the exterior walls could remain, and a few internal walls would need to be altered. The gable roof should have long dormers on both sides. The ceiling would need to be renewed, and the kitchen and bathroom downstairs remodeled. The insulation would have to be renewed on the outside, and the entire exterior recladded with facing bricks.
What would the value of the bungalow be if it were credited towards a new build? It dates back to the 1970s but has been continuously maintained.
There is a wide price range for renovations online. If you even have rough cost ranges broken down by trade, that would be great. I want to renovate/convert to meet the KfW 55 standard to take advantage of the 48,000€ funding available through program 430.
Best regards
FuxxBau schrieb:
We are currently looking at a bungalow of about 110m² (1,184 sq ft), which we would convert into a single-family house with a pitched roof. To create 100m² (1,076 sq ft) of finished, heated living space including dormers, second emergency exits, new insulation for the entire house, new windows everywhere, structural calculations, staircase, new support beams on the ground floor, ceiling reinforcement, blower door test, etc., would the cost be around 200,000–250,000?
With these costs, I would first submit a preliminary building inquiry, since dormers are not always allowed everywhere.
Thank you. What does "second escape route" mean? Almost all neighboring houses have dormers, so that shouldn’t be a problem. In any case, we would submit a preliminary building inquiry. We are now gathering more details about the house and will also contact construction companies.
Besides KfW 430, 151 and 152 would also be interesting. We would need to discuss these with the banks (loan advisors).
Besides KfW 430, 151 and 152 would also be interesting. We would need to discuss these with the banks (loan advisors).
Who with experience can give me approximate prices for the following work/materials?
Premises:
Exterior dimensions bungalow 8m * 14m (26 ft * 46 ft)
It should be modernized/renovated to KfW 55 standard
Exterior walls and foundation slab are stable for attic conversion
Costs:
- Remove and dispose of wooden ceiling
- Underfloor heating everywhere (either open the floor downstairs or possibly raise the entire interior floor level slightly with a small step at the entrance)
- New support beams
- New gas heating system, water storage tank & solar thermal system
- Pour/set concrete ceiling for the upper floor
- Raise exterior wall by 50cm (20 inches) on the upper floor
- Build roof with 43° pitch (wood construction, insulation, roof tiles)
- Two long 10m (33 ft) gable walls
- Lightweight ceiling to the attic (insulated)
- Insulate exterior walls on the ground floor
- Install brick veneer everywhere
- "Standard" windows on the upper floor
- Electrical wiring installation
- Additional costs: structural engineering, building permits/planning permission
- Building surveyor during construction
- L-shaped concrete staircase
- Decentralized ventilation system
- What am I missing?
Additional details:
2 bathrooms
Walls, floors, and kitchen done by myself
Energy consultant involved (– BAFA funding)
Roller shutters installed everywhere
Premises:
Exterior dimensions bungalow 8m * 14m (26 ft * 46 ft)
It should be modernized/renovated to KfW 55 standard
Exterior walls and foundation slab are stable for attic conversion
Costs:
- Remove and dispose of wooden ceiling
- Underfloor heating everywhere (either open the floor downstairs or possibly raise the entire interior floor level slightly with a small step at the entrance)
- New support beams
- New gas heating system, water storage tank & solar thermal system
- Pour/set concrete ceiling for the upper floor
- Raise exterior wall by 50cm (20 inches) on the upper floor
- Build roof with 43° pitch (wood construction, insulation, roof tiles)
- Two long 10m (33 ft) gable walls
- Lightweight ceiling to the attic (insulated)
- Insulate exterior walls on the ground floor
- Install brick veneer everywhere
- "Standard" windows on the upper floor
- Electrical wiring installation
- Additional costs: structural engineering, building permits/planning permission
- Building surveyor during construction
- L-shaped concrete staircase
- Decentralized ventilation system
- What am I missing?
Additional details:
2 bathrooms
Walls, floors, and kitchen done by myself
Energy consultant involved (– BAFA funding)
Roller shutters installed everywhere
FuxxBau schrieb:
For a new single-family home, we would budget about €300,000 (approximately $320,000) for the house itself. Additional costs would include the land, incidental expenses, utility connections, garage, garden, kitchen, walls, floors, etc.
The price includes the development of the attic, underfloor heating, decentralized ventilation, roller shutters, two mansard gables, and KfW 55 energy efficiency standard. The house would be around 180–190m² (1,940–2,045 sq ft), all without a basement. Does the €300,000 refer to the new build described above? If so, I would say... impossible.
kbt09 schrieb:
Do the 300,000 refer to the subsequent description as new construction? If so, I would say... impossible. No. They refer to building on greenfield land as a comparison.
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