2'290'000
CHF2'290'000
New development·efsimmo.com
Living on two levels and an exceptionally spacious terrace
At Benkenstrasse 9 in 4104 Oberwil BL, this attractive 4.5-room attic maisonette apartment is being built as part of a new construction project with only five condominiums.
The left-hand apartment W5 extends over the first upper floor and the attic. Approximately 147.93 m² of living space, including a winter garden, offer space for communal living and personal retreats. Whether family life, guests, or a home office – the 4.5 rooms offer a variety of uses.
The special highlight is the 144.26 m² large terrace. Here, an inviting dining area, cozy lounge furniture, and your plants find their place. Enjoy extended breakfasts, relaxed afternoons, and sociable summer evenings under the open sky. The winter garden complements the outdoor area with a protected place to linger.
Oberwil combines natural living in the Leimental with proximity to Basel. Shopping facilities, schools, and public transport make everyday life easier. The surrounding recreational areas invite you to take walks, bike tours, and relaxing breaks.
The key data at a glance
Sales price: CHF 2'290'000.–
Discover your new home with generous outdoor space in Oberwil. We would be happy to send you the sales documents and present the attic maisonette apartment to you in a personal consultation. We look forward to your contact.
The asking price is 41.4% above the median of .
This listingCHF 2'290'000
CHF 1'620'000
Median
Is there room to negotiate?
A typical listing stays on the market for about 34 days. 1.2% of active listings have cut their asking price in the last 90 days.
Benkenstrasse 9 4104 Oberwil
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ARE transit class C — usable but limited service.
61% built-up area within 500 m.
Small and larger households · around 52 people in the neighbourhood.
50 %
Lower than 94% of municipalities in the canton
ESTV · 2026
CHF 13'653 income tax a year · Single person without children, gross wage CHF 100'000
Road and rail noise in the surroundings
Calculated from the federal noise model: the mean over the hectare (100 × 100 m) of the surroundings, model year 2021.
Night
37 dB
Loudest source
Road
Calculated level, placed on a scale of everyday sounds.
At least one pollutant is above its WHO guideline; all meet the Swiss limit.
The federal radon map estimates that 2 to 10% of the buildings here exceed the reference value of 300 Bq/m³.
In 10 to 50% of the buildings around
In the network models of 3 operators.
Mobile: as of 2026