2025
Feasibility study, house with annexe, Tuggen SZ
Feasibility study & owner's construction advisory
«An existing house, several generations, and an open question about what planning law actually allows.»
PHASE
Feasibility study & owner's construction advisory
SERVICE
Grundstücksanalyse, Architektur
DURATION
10 weeks
READING TIME
5 min read
The concern
Is the existing building volume enough for three independent dwelling units?
What we did
Site and zoning analysis, massing and option studies, plus an outline cost estimate.
What was the goal?
A clear direction instead of gut feeling in a multi-party family situation.
What was the initial situation?
The building owners owned a large single-family house with a secondary dwelling and had the idea of converting the building so that two full dwelling units for two families could be created. Which structural options existed, what a sensible separation might look like, and what that meant in legal terms were open questions that had to be answered before any further design work.
We finally understood what is possible and what is not.
Multi-generation family, Tuggen SZ
What have we accomplished?
The starting point was a site and zoning analysis with a detailed review of what planning and building law permits and restricts. Several option studies were developed for separating and extending the building and discussed together with the building owners. In parallel we produced outline cost assumptions and, together with a contractor, worked out a coherent delivery strategy.
What was the result?
The building owners received a clear development strategy with a realistic cost framework. The project is designed to be permit-ready and can be taken forward into the next design stage.
This is how the collaboration went
01
Getting to know each other
Discuss the family situation, needs and objectives.
02
Site and zoning analysis
Check reserve floor area, extension options and planning law.
03
Option studies
Develop and compare separation and extension concepts.
04
Strategy
Agree the delivery route and cost framework together.
05
Completion
Hand over documents and prepare the transition to the next stage.
Plain text from the project
Setting a feasibility study up properly is worth more than the fastest sketch.
What was the added value for the customer?
Clarity on potential
Structural options and limits are set out in an understandable way.
Realistic cost framework
A first reliable estimate for each development option.
Sound project set-up
A robust basis for detailed design in the next stage.
A solution for several parties
Tailored to the differing needs of both families.