ᐅ Small House on a Large Corner Lot

Created on: 17 May 2025 11:16
S
Sandstapler
S
Sandstapler
17 May 2025 11:16
We plan to build on a plot of land in Brandenburg, south of Potsdam.
Plot Information
The plot is currently mostly covered with pine trees, some of which are around 100 years old, along with a few yews, oaks, and bushes. The area has been unmanaged for at least 50 years. At least the rear third (northeast area) is intended to remain forested, as part of the adjacent larger woodland.
The plot is oriented approximately northeast – southwest.
Street access is on the southwest side (bottom of the plan). At this end of the plot, there are a few very tall pines with some yews and an oak in between. The oak is not very old but is an interesting multi-stem tree. I want to preserve this green screen, which will likely be challenging since construction vehicles require a certain size and height.
On the southeast side (right on the plan) there is an overly large and mostly unattractive boundary structure (garage and shed), which is not very appealing.
The neighboring plots on the northwest side (left on the plan) together have a similar amount of boundary structures but less intrusive and located further towards the top of the plan. Overall, the northwest side is greener because the neighboring buildings are set further back from the property boundary.

Development Plan / Restrictions
There is no formal development plan, but local regulations set general rules, such as ridge height, setback distances, and garage roof shape. If these are specified anywhere, floor area ratio and plot ratio probably only play a theoretical role for this project and plot size.
Plot size: >2000m² (21,528ft²)
Slope: none
Floor area ratio unknown
Plot ratio unknown
Building window, building line, and boundary >3m (10ft) setback
Outbuildings allowed along boundary
Number of parking spaces not specified
Number of storeys not specified
House roof shape: roof pitch 25°–50°, excluding roof extensions
Garage: gable roof facing street
Architectural style: no specific requirements
Orientation: gable end or eaves aligned to street
Maximum heights/restrictions: ridge height max. 9.0m (30ft)
Other specifications: ground floor top edge max. 80cm (2.6ft)

Client Requirements
Architectural style, roof type, building type: gable roof
Orientation: photovoltaic panels on the south-facing roof side, gable end facing street
Basement, storeys: basement + ground floor + first floor
Number of occupants, ages: 3+1, ages 17–55+
Space requirements on ground floor, first floor:
Ground floor: living room, kitchen, dining area, guest bathroom
First floor: bedrooms, bathroom
Two additional rooms on ground floor or first floor
Office: mainly home office for one person
Guests per year: 1 (about 20 extended weekends)
Open or closed architecture: window-obscuring bathroom and bedroom doors
Conservative or modern style: conservative
Preferred construction method: solid gas concrete blocks (e.g. Ytong or similar)
Open kitchen with cooking island: semi-open, preferably with (half) island
Number of dining seats: 4 (expandable to 8)
Fireplace: yes
Music/stereo/TV wall: rather simple / stereo system yes, no built-in wall unit / large screen
Balcony/roof terrace: balcony yes / roof terrace no
Garage/carport: garage
Utility garden, greenhouse: garden yes, greenhouse later

Additional Requests / Special Features / Daily Routine, including reasons why certain things are wanted or not:
The plot is quite narrow at just under 20m (65ft) wide for my desired house, which includes a partially integrated side double garage and a large sunny southwest terrace, so the best compromise must be found.
Due to the tall trees on the southwest, we expect western sun only during summer. Also, two neighbor’s pine trees cast shade from the south on the likely building site.
When not sleeping, we mainly live on the ground floor, so this has planning priority. The kitchen is an important room, so we prefer a (semi-)open connection to the living room. At least one of us regularly works from home, so a suitable workstation is necessary, but a dedicated home office room is not essential.
Light is important in the living area (kitchen and living room), so we want the top edges of the windows to be as high as possible with roller shutters.
The fireplace is a 95% must-have as a supplementary heat source (and hopefully a cozy feature). Good positioning is a priority, but if possible, we’d like a water-carrying fireplace connected to a buffer tank and/or an additional hot water heating circuit for the bathrooms (e.g., large towel radiators). A ground heat load is planned via an air-to-water heat pump for underfloor heating. Additionally, air conditioning is planned in the master bedroom and child’s room 1.
A central ventilation system is probably too expensive.
The master bedroom should accommodate a double bed and a row of wardrobes.
Child’s room 1 will still serve as a youth room for a few years, later becoming a second bedroom (due to reported nighttime noise of uncertain cause).
The multi-purpose room is not yet definitively assigned: either home office or utility room with space for washing machine and dryer, or storage room.
Preferred room orientations (due to morning sun): kitchen, bathroom, and bedroom facing the garden.
The gable end facing the street seems sensible since photovoltaics are planned on the roof, and the south-facing side (+/- 30°) is expected to have the least shading.
My wife’s wish for a balcony on the bedroom is “because it looks better.”
If built, we would like access to the balcony from the bedroom and the bathroom.
A basement is a 95% must-have due to various hobbies requiring significant space and tools. Also, all technical equipment is planned to be located in the basement.
A garage is essential (as large as possible for 1–2 cars, bicycles, and garden tools), but the house has higher priority. If necessary, the garage can be built later and/or an additional carport added on the street side, or even an underground garage (a small dream).
We now consider a connecting door between house and garage impractical. With the entrance on the gable side, the path is short and convenient anyway.
Gas concrete as preferred wall material was chosen because of its combination of easy handling during shell construction (which tends to avoid the common poor work that can cause thermal bridges), very good sound insulation, pleasant indoor climate, minor advantages during interior finishing, and previous DIY experience with the material. It is also non-combustible, avoids producing large amounts of hazardous waste, and structurally the walls are not potential habitats for insects or small rodents.

House Design
Design origin: by me
-Not designed by a construction company planner yet
-Architect is being sought
-Do-it-yourself approach: yes (reading, trying, thinking, reading, trying, ...)
What do you especially like? Why?
Entrance on street side (front view preferred over side entrance)
Layout of kitchen, bathroom, bedrooms
Kitchen with large work surface, appliance space, and storage
Sauna in the bright bathroom
Bright living room with fireplace
Hallways on ground and first floors and staircase with daylight
Coatroom near entrance (though small)
Small but fully functional guest WC on ground floor
What do you dislike? Why?
Costs likely at the budget limit
Easy access to attic not resolved
Attic usage not finalized
Little distance to right side property boundary
Relatively large hallway areas
Living area (according to CAD program): 135m² (EG 71m², OG 64m²) (1453ft² total; ground floor 764ft², first floor 689ft²)
Estimated price per architect/planner: unknown but would like to know
Personal price limit for the house, including equipment: 550,000 EUR
Personal preferred heating technology: oil/gas (more independent under various situations) and fireplace
Most likely heating system realistically planned: air-to-water heat pump (for various reasons) + fireplace
Possibly additional split air conditioners in master bedroom and child’s room 1

If you have to forgo something, which details or extensions
-can be omitted: balcony, double garage, finished attic
-cannot be omitted: light

Why is the design the way it is now?
The design is one of the results of two years of reading, viewing, own experiences, consideration, and experimentation. There are now many design variants; four or five are basically acceptable to us, each with different pros and cons.
This is one of the options with the smallest living area. I transferred it into a mediocre (very stubborn) CAD system because it provides automatic dimensioning. The system also helps my 3D spatial imagination (e.g., stairs under roof slope, walls stacked, first-floor windows within the building volume, roof in general).
Many details are not finalized yet (e.g., stair to attic, windows, …) because of my lack of knowledge and experience. Also, some window and door types are simply not available in the CAD program; others are stubbornly displayed incorrectly.
The furniture layout shown is currently the best idea, but there are certainly better options (e.g., for the bathrooms).

Thank you in advance for your suggestions and help.
Site plan with blue outline marking the building plot, tentative building location.

Floor plan of a house with kitchen, living room, hallway, bathroom, guest room and garage.

First floor plan of a house with hallway, bathroom, sauna, bedroom, kitchen and stairs.

3D model of a white house with dark gable roof, extension with garage and paved driveway.

Modern two-story villa with roof, balcony with glass railing and garden fence.
11ant17 May 2025 12:50
Sandstapler schrieb:

The plot is currently mostly covered with pine trees (some around 100 years old), a few yews, oaks, and bushes. The area has been unmanaged for at least 50 years. At least the rear third (northeast area) is intended to remain forest, as part of the adjacent larger woodland.

See these reading tips: https://www.hausbau-forum.de/threads/kosten-fuer-rodung-und-entwilderung-eines-Grundstücks.38867/ and https://www.hausbau-forum.de/threads/suche-erfahrungen-zur-waldumwandlung-im-beelitz.41247/
Sandstapler schrieb:

A preliminary choice of aerated concrete as the preferred wall material came from the combination of easy handling during shell construction (the so-called “botched pockets” – which are often jokingly cursed – rarely become thermal bridges here), very good sound insulation, pleasant indoor climate, some minor advantages during interior finishing, and earlier DIY experience with the material. It is also non-combustible, avoids the use of cubic meters of hazardous waste, and structurally the walls do not provide potential habitats for insects or small rodents.

If the “botched pockets” caught your attention while reading, you have probably also found how to avoid them: by not ignoring octameter rules. Besides, the thermal bridge issue with aerated concrete is no worse than with clay brick masonry. You are very generous using 24cm (9.5 inches) walls.
Sandstapler schrieb:

A garage is indeed a must (as large as possible for 1-2 cars plus bicycles and gardening tools), but the house has priority. If necessary, it can be built later and/or an additional carport could be added at the street side. Or an underground garage (a little dream).
We now consider a door between the house and garage as not realistically feasible. With the entrance on the gable side, the path is already conveniently short.

A commendable approach. By the way, underground garages become cost-effective only from about eight parking spaces upward.
Sandstapler schrieb:

The design is one of the results of now two years of reading, viewing, personal experience, thinking, and experimenting. There are now numerous design variants. Of these, four or five are fundamentally acceptable to us, each with different pros and cons.
This is one of them, with the smallest living area. I transferred it into a mediocre (very stubborn) CAD system to get automatic dimensioning. The system also helps my 3D imagination (e.g., stairs under a sloped roof, walls stacked atop each other, upper floor windows within the building volume, roof in general).
Many details are still not finalized (e.g., stairs to the attic, windows, etc.) because I lack knowledge and experience. Also, some types of windows and doors are simply not available in the CAD software, others are consistently misrepresented.

Finalizing should have as little place in a design as CAD does in a preliminary draft. You should find plenty of guidance here on the way to my house-building roadmap.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
H
hanghaus2023
17 May 2025 12:51
An aerial photo helps to better visualize the forest. A site plan with the dimensions of the plot is also useful. Is there a design code or planning regulation from the local authority?
S
Sandstapler
17 May 2025 13:37
The plot is forested but designated as building land. Removing trees in the planned construction area is not a big issue.
11ant schrieb:

If you already noticed the botched work while reading, you should also have found out how to avoid it: by avoiding ignorance of an octameter grid. Besides, the thermal bridge problem in aerated concrete is no less than in brick masonry. Your 24 cm (9.5 inches) walls are quite generous.
From my own experience, an octameter grid is quite irrelevant for a block size of 42 x 60 cm (16.5 x 23.6 inches). If cutting is necessary, it doesn’t matter whether at 12.5 cm (4.9 inches) or 48.2 cm (19 inches). But these are finer details that will hopefully be taken into account by the architect in the final floor plan if needed. I definitely won’t start a dispute over whether a wall is positioned two or three centimeters more to the left or right.
Making an unnecessarily thick interior wall thinner should also be manageable for an architect.
11ant schrieb:

Finalizations have as little to do in a draft as CAD has in a preliminary design. You should find enough guidance here for my house construction plan.
This is no longer a preliminary design. The preliminary designs exist as hundreds of Paint files in a 12 GB directory structure.
I already explained why I transferred this floor plan into a CAD system.
hanghaus2023 schrieb:

An aerial photo helps to better visualize the forest. A site plan with plot dimensions is also helpful. Is there a municipal design code?
The tree population is sparse; an aerial photo just shows green since the ground is also covered.
The plot is about 20 meters (65 feet) wide and more than 100 meters (328 feet) long.
There is a general design code, but it does not impose any requirements beyond those already mentioned in the initial post.
H
hanghaus2023
17 May 2025 13:48
With the basement and the double garage, as well as the huge kitchen and the bathroom with sauna, you have to do a lot of the work yourself. Otherwise, the budget will be tight in the end.
S
Sandstapler
17 May 2025 13:48
11ant schrieb:

Underground garages are generally worthwhile only if you have around eight parking spaces.
Cars, bicycles, electric scooters, trailers, lawn mowers, shredders, mulchers, strollers for visiting children – that’s about eight.

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