Expert at your side
I will review building regulations, floor area ratio, building volume ratio, boundary setbacks and the effective buildability of the property for you – clearly, independently and within a few days.
When do you need a site and zoning analysis?
before you buy a property
if you don't want to properly assess an advertisement
if you need to understand planning and building law
when the floor area ratio (Ausnützungsziffer) is unclear
if you want to know if your budget matches the property
if you want to avoid expensive mistakes
The sooner you have clarity, the better you will negotiate and the more confidently decisions will be made.
Why a site and zoning analysis is crucial.
A professional site and zoning analysis reveals:
how high the floor area ratio (Ausnützungsziffer) will realistically be
how the building volume ratio (Baumassenziffer) works
What boundary setbacks apply?
whether the property is suitable for your project
whether the price is appropriate in relation to the potential living space
whether risks such as easements, building lines or special regulations exist
In short: It protects you from buying a property that doesn't suit your plans.
What you get from raumwert plus
Clear feasibility instead of technical jargon
I review every relevant planning and building law requirement:
zoning ordinance (Zonenordnung), cantonal and municipal building regulations, floor area ratio calculation (Ausnützungsziffer), building volume ratio (Baumassenziffer), boundary setbacks, buildability, special design plans (Gestaltungsplan) and easements.
You get a clear answer: what is feasible and what is not.
Floor area ratio and building volume ratio
Many building owners know the term but not its meaning.
Using the relevant key figures, I show how much floor area can realistically be built.
You also find out whether there are any special conditions, such as floor area ratio, building volume ratio, special regulations or reductions.
So that you understand the potential and the risk of the property.
Economic assessment: Is the purchase really worthwhile?
The question is never: "How expensive is the land?" The question is: "How much am I allowed to build on it?"
I assess the property according to economic criteria and show whether the price is justified.
Identify risks early
Typical pitfalls when buying land:
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incorrect assumptions about buildability
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overly optimistic floor area ratio
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undetected easements
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forest setbacks or building lines
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missing site servicing
I make visible what others overlook.
Independent, experienced, architecturally sound
As an architect SIA, I think beyond mere numbers:
I assess usable floor space, volume, construction costs, and concept quality, as well as any subsequent design.
This makes the analysis more precise and reliable.
References: Site and zoning analysis
5-star feedback
Here's what our customers say
The following feedback demonstrates how collaboration leads to sustainable project success. Read more Google reviews of raumwert plus GmbH.
Simon Käslin has supported me on several construction projects. He always does so with great professional expertise and an open, approachable manner.
Lorenz L., Zurich
The collaboration with raumwert+ was a complete success. [...] Thanks to their optimisations, we were able to gain more usable space, reduce construction costs, and increase quality – all without compromising the concept. A definite recommendation for anyone who wants to realise the full potential of their project.
Mark S., Thurgau
Simon reviewed the project for accuracy, clearly explained the key points, and drafted an objection. The construction plans were subsequently revised and adjusted. His assessment was thorough, clear, and very helpful. Highly recommended if you are looking for an independent and expert second opinion.
Balz K., St. Gallen
We first used raumwert plus's free basic screening to have our project reviewed from a fresh perspective. Even then, Simon clearly showed us where there was still untapped potential: especially in space utilization and construction costs. After that, the 360° project optimization went into much greater detail with tangible results: more usable space, smarter structures, and reduced costs. [...] For us , a clear win, both in terms of content and finances.
Franziska S., Zurich