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Floor plan · Bungalow with in-law apartment

Bungalow with in-law apartment: smart floor plan division

A bungalow with in-law apartment brings two residential units barrier-free on one level: a large main apartment and a self-contained in-law apartment with its own entrance, own kitchen and own bathroom - ideal for relatives, guests or as a rental apartment. We show the most important floor plan variants with separate entrances, sensible living area splits, the legal short notes on the ELW - and present 0 specific bungalow houses with prices.

Bungalow mit Einliegerwohnung Grundriss: ebenerdiger Winkelbungalow als Neubau mit getrennten Wohneinheiten
Example house: single-story bungalow with separable in-law apartment — floor plans and prices vary by provider, Stand 2026.

Bungalow with in-law apartment floor plan: division overview

Short answer: A bungalow with in-law apartment floor plan divides the single-story area into a large main apartment (open living area plus two to three rooms) and a self-contained in-law apartment of around 30 to 60 qm with its own kitchen, own bathroom and separate entrance. Here you currently find 0 larger bungalows starting from 135 m². These manufacturer prices apply without building plot and construction ancillary costs.

The bungalow is almost predestined for the in-law apartment: Because all rooms lie without thresholds on one level, the ELW can be designed ideally barrier-free - for example as an age-appropriate apartment for parents or grandparents. Decisive is the clear separation of both units: own access, own kitchen, own bathroom. Thus the in-law apartment remains independently usable and - where building-law permitted - rentable. Read more about the basic form in the Bungalow floor plan overview, the complete topic overview for single-level living is bundled in the prefabricated house bungalow.

0 bungalows
from 135 m² for an ELW
live filtered from our houses database (bungalow & L-shaped bungalow)
on request
Prices on request
Manufacturer prices without building plot & construction ancillary costs
30–60 qm
typical ELW size
own kitchen, own bathroom, separate entrance

Floor plan variants for a bungalow with in-law apartment: division and what they suit

VariantDivisionSuits
Separate entrances, side by sideMain and ELW next to each other, each with own front door on different building sidesClear separation, ideal for rental
L-shaped bungalow with ELW in the legELW in the short L-leg, main apartment in the long tract, shared inner courtyardFamilies with relatives in the house
ELW with internal connecting doorLockable door between the units, otherwise separateFlexible use as guest/care apartment
Compact ELW as extensionSmall, self-contained unit on the house side with own accessHome office, guests or small rental apartment

The house prices on this page are catalogue from prices of the providers (ancillary costs +15–20 %). Calculate your realistic total sum including building plot in the cost calculator.

Living area splits: This is how main and in-law apartment are divided

How large main and in-law apartment turn out depends on the need: If the ELW is only to be a guest or care room, around 40 qm is sufficient. For a permanently habitable or rentable apartment 50 to 60 qm with own living kitchen and two rooms is more realistic. The following table shows proven splits for common total areas.

Example living area splits in the bungalow with in-law apartment (guide values)

Total areaMain apartmentIn-law apartment
150 m²ca. 110 m² (3 rooms + living)ca. 40 m² (1.5 rooms + bathroom)
170 m²ca. 120 m² (4 rooms + living)ca. 50 m² (2 rooms + bathroom)
190 m²ca. 130 m² (4 rooms + living)ca. 60 m² (2 rooms + bathroom + living kitchen)

Important: For a real, independent in-law apartment, kitchen, bathroom and access should be completely separate. A pure apartment in apartment solution without own kitchen is usually not considered an independent residential unit under building law. Whether the self-finishing is financially worthwhile, best calculate with the cost calculator.

Separate entrances: How the units are cleanly separated

An own, lockable access is the core feature of any in-law apartment. In the bungalow there are several elegant solutions: separate front doors on different building sides, a shared vestibule with two apartment doors or - with the L-shaped bungalow - one entrance per L-leg. An internal connecting door is possible, but should be lockable so the separation remains clear. With the L-shaped bungalow floor plan the ELW can be accommodated particularly well in its own building leg.

The prices of the individual bungalows depend strongly on size, fit-out level, equipment and energy standard. To the house price always add building plot, development, building permit and external installations - how that works is shown by the guide to the house construction costs.

Legal short notes on the in-law apartment

Whether a second residential unit is permissible is regulated by development plan and state building regulations. Common stumbling blocks are additional parking spaces, energy requirements and the separate recording of consumptions. These points should be clarified early with the building office and - in case of rental - with the tax advisor:

  • Check development plan: Is a second residential unit on the building plot permitted at all?
  • Clarify parking spaces: For the ELW many municipalities require an additional parking space proof.
  • Plan separate meters: own meters for electricity, water and heat facilitate billing and rental.
  • Secure independence: own lockable entrance, own kitchen and own bathroom make the ELW independently usable.
  • Clarify tax and subsidy beforehand: rental, relative use and subsidized residential units have different rules.
  • Think of barrier-free: ground level shower, door widths from 90 cm and movement areas of 1.50 m make the ELW age-appropriate.
  • Check building plot size: The bungalow with ELW needs significantly more area due to the single-level construction method.

Note

These are general orientation notes, no legal or tax advice. The specific requirements differ depending on federal state, municipality and building plot - check them before planning with the responsible authorities.

0 large bungalow houses for an in-law apartment

These larger bungalows and L-shaped bungalows from 135 m² offer enough space for a separable secondary apartment. They come from our curated database and are sorted by catalogue "from" price in ascending order (houses without price indication are at the end). All images, floor plans and detailed information come from the manufacturers - you plan the ELW together with the provider in the floor plan.

Smaller bungalows without secondary apartment in comparison

You do not need a second residential unit? Then a more compact bungalow is often sufficient. Couples and small families will find what they are looking for with the Floor plan Bungalow 100 qm successful, the family sweet spot is at the Floor plan Bungalow 120 qm. Ground-level living in old age is explained on the page Bungalow floor plan for seniors. All other layouts are bundled in the Floor plan overview, the house type is explained on the page Bungalow as prefabricated house.

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Frequently asked questions about bungalow with secondary apartment floor plan

Answers about division, separate entrances, living area splits, legal ELW notes, accessibility and costs 2026.

What does a bungalow with secondary apartment floor plan typically look like?
A bungalow with secondary apartment floor plan divides the ground-level area into a large main apartment and a smaller, self-contained secondary apartment (ELW). The main apartment includes an open living-dining-cooking area plus two to three rooms; the ELW of about 30 to 60 qm accommodates living-cooking room, bedroom and own bathroom. Both units generally have separate entrances. The bungalow is particularly suitable because everything is barrier-free on one level.
How large must a bungalow with secondary apartment be?
Realistically, a bungalow with secondary apartment needs from around 150 qm total living area: about 100 to 120 qm for the main apartment and 30 to 60 qm for the ELW. Smaller is possible only if the main apartment remains very compact. The area is open upwards - many builder-owners plan 160 to 200 qm so that both units are generous. The bungalow requires a correspondingly larger building plot for this, as everything is spread over one level.
Must the main and secondary apartment have separate entrances?
For a true secondary apartment, a separate lockable access as well as a separate kitchen and a separate bathroom are common and usually a prerequisite for the apartment to be independently usable or rentable. In the bungalow this can be well solved: separate main doors on different sides of the building or a shared windbreak with two apartment doors. An internal connecting door is possible but should be lockable to clearly separate the units.
What legal points apply for a secondary apartment in the bungalow?
The development plan and state building regulations are especially important: they determine whether a second residential unit is permitted and whether additional parking spaces must be demonstrated. For letting, the energy requirements, separate recording of consumption (own meters) and the tax treatment are also relevant. If the ELW is used for relatives, different tenancy conditions apply than for letting to third parties. Clarify the details with the building office and tax advisor before planning.
Is a secondary apartment in the bungalow worthwhile financially?
An ELW can be worthwhile in two ways: rental income helps with financing, and there are sometimes low-interest loans for the construction of subsidized residential units. At the same time, flexibility increases - the apartment later serves as a nursing, guest or children's apartment. Higher construction costs for the second kitchen, the second bathroom and the separate access are offset against this. Whether it is worthwhile depends on rental level, use and subsidy; an individual calculation is advisable.
What does a bungalow with secondary apartment as prefabricated house cost 2026?
At the price level 2026 of around 2,350 €/m² (volume house) to 4,500 €/m² (premium) a turnkey bungalow with secondary apartment from about 160 qm is around 376,000 € to over 720,000 €, without basement and building plot. The second kitchen, the second bathroom and the separate access slightly increase the square meter price. As a shell house for self-finishing the price drops; ancillary construction costs of 15 to 20 percent are added in each case.
Can the secondary apartment be planned to be barrier-free?
Yes, that is one of the biggest advantages of the bungalow. Since all rooms are without thresholds on one level, the secondary apartment can be ideally designed barrier-free - with a ground-level shower, door widths from 90 cm and sufficient movement areas. This makes the ELW excellently suited as an age-appropriate apartment for parents or grandparents. Those who plan the accessibility from the start save expensive later conversions.
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