Haldenweg 12
Helvetia Immobilien bought a plot the zoning had been shrinking for six years. The envelope came out of the feasibility study rather than the other way round, and the cost plan that won approval is the one that got built.
The brief
Three setback revisions in six years had taken the buildable envelope down by a fifth. The developer’s own consultants had priced two schemes against the old figures, and both came back over budget at tender — not because the design was extravagant, but because it was drawn against a plot that no longer existed.
We re-ran the zoning envelope first and drew nothing until the number held. Thirty-eight units fit under the current setbacks with a metre to spare, and that metre is why the scheme cleared the planning hearing without a single amendment.
Units delivered
Square metres
Months on site
Of contract value in variations
The tender set
1,240 sheets · issued March 2022 · priced without a single request for information
Unit 3.04
84 m² · handed over June 2024 · snag list closed before the keys
Client
Helvetia Immobilien AG
Contract
Single contract, all four disciplines
Partner in charge
Matthias Reber
Structure
Bänziger Partner AG
Contractor
Implenia Schweiz AG
Status
Handed over, June 2024