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MIRAGE: Protected substance becomes a villa with lake views.

In Küsnacht, a heritage-protected single-family house is being transformed into a spacious villa with lake views. Because the existing building could not be torn down, the challenge was to get the maximum out of the protected building – and correctly position it as a luxury property with a narrow buyer pool. smzh manages the central interfaces of property access, feasibility, permitting and sale.

Küsnacht ZH, MIRAGE: Protected substance becomes a villa with lake views.

Starting point

1 single-family house

A heritage-protected single-family home on an incline in Küsnacht overlooking Lake Zurich – protected, cannot be torn down, but offers high-quality potential.

Challenge

Heritage protection, existing substance and a narrow buyer pool set clear limits on intervention, fit-out and positioning.

Planned result

1 villa

A spacious villa with lake views – developed based on the existing building in keeping with heritage requirements and geared toward a discerning buyer pool.

The biggest value levers at Küsnacht:

Blue marks a value jump.

Project profile:

Location

Küsnacht ZH

Starting point

Heritage-protected single-family house

Use

Residential

Property

1 villa

Segment

Luxury segment

Intervention

Full renovation & extension

Views

Lake views (Lake Zurich)

Status

In execution

A heritage-protected single-family home turned into a high-quality villa with lake views.

Covered terrace with lounge and views of Lake Zurich.
Open living, dining and kitchen area.
Open living, dining and kitchen area.
Infinity pool with sweeping views over the lake at sunset.
Living space with floor-to-ceiling windows and lake views.
Living space with floor-to-ceiling windows and lake views.
Bedroom with skylight and sweeping views.
Marble bathroom with double vanity and rain shower.
Prime incline location in Küsnacht – embedded in the established neighborhood.
Prime incline location in Küsnacht – embedded in the established neighborhood.

Preserve the existing building – and reposition it as a villa.

This single-family home is heritage-protected and could not be torn down. The challenge was to preserve the protected substance and develop it into a spacious villa with lake views. At the same time, the buyer pool for such a property is narrow – positioning, fit-out and sale therefore had to be considered as one from the start.

The villa with pool and terrace above Lake Zurich.
Protected substance on an incline – preserved and repositioned.
Protected substance on an incline – preserved and repositioned.
Historic roof truss remains visible in the living space.
Historic roof truss remains visible in the living space.

Protected substance becomes a marketable villa.

Potential in the existing building clarified

Heritage protection, location and substance set the frame. What mattered was which potential is achievable within these limits.

Developed into a villa

The existing single-family home is being renovated in keeping with heritage requirements, extended and repositioned as a spacious villa with lake views.

Buyer pool deliberately steered

For high-quality individual properties, the buyer pool is small. Positioning, fit-out and sale must therefore be aligned early to focus on the right buyers.

This is how a heritage-protected house becomes a sellable villa.

Value jump

01 Property access

The beginning is not about the sale price, but about a property with protected substance and potential.

  • Starting point: Heritage-protected single-family home located on an incline in Küsnacht with views of Lake Zurich.
  • smzh decision: First clarify which residential product can be developed from the protected substance.
  • Value lever: Location, building substance, heritage requirements and target buyers assessed and set as the basis.
  • Result: A clear target: a high-quality villa with lake views, built using the protected substance.
Value jump

02 Feasibility

Feasibility here means: how much villa does the protected substance allow?

  • Starting point: A protected house that may not be torn down, and a narrow luxury market.
  • smzh decision: Assess early how heritage protection, conversion, costs and target segment can be reconciled.
  • Value lever: Heritage requirements, building substance, conversion costs and target segment brought together into a feasibility basis.
  • Result: A viable target: a villa that preserves the existing building and realizes its full potential.

03 Usage concept

A single-family home becomes a spacious villa – not through demolition, but through conversion.

  • Starting point: A protected single-family home with potential for high-quality living.
  • smzh decision: Align floor plan, fit-out and extension to a luxury villa concept in keeping with heritage requirements.
  • Value lever: Existing building, extension and fit-out combined in a spacious villa concept.
  • Result: A villa that preserves the protected character and offers contemporary luxury.

04 Structure

A heritage-protected luxury project needs a clean structure across all parties.

  • Starting point: A conversion within the existing building with heritage requirements, construction costs and a narrow target market.
  • smzh decision: Align conversion, financing and marketing to a shared target.
  • Value lever: Heritage requirements, construction sequence and marketing aligned to a shared project logic.
  • Result: Structure aligned to conversion, financing and sale; project in execution.
Value jump

05 Permitting

With heritage protection, the permit determines the room for maneuver.

  • Starting point: Conversion and extension of a protected house with requirements from heritage conservation and authorities.
  • smzh decision: Clarify permittability early with heritage conservation and authorities.
  • Value lever: Heritage conservation, authorities and planning coordinated, and the permit obtained.
  • Result: Permit obtained; the heritage-compliant conversion is being carried out.

06 Capital

A luxury property needs a resilient financing basis.

  • Starting point: A heritage-compliant conversion in the luxury segment needs solid financing.
  • smzh decision: Make the project financeable through conversion costs, value and expected sale proceeds.
  • Value lever: Conversion costs, existing-building value and proceeds logic translated into a financeable structure.
  • Result: Financing secured on the basis of clear costs and transparent proceeds.

07 Implementation

With protected substance, implementation determines quality and value retention.

  • Starting point: Conversion within the protected building with demanding substance, requirements and logistics.
  • smzh decision: Lead the conversion along the target and the heritage requirements.
  • Value lever: Substance preservation, shell construction and high-quality fit-out led in keeping with heritage requirements throughout implementation.
  • Result: In execution.
Target stage

08 Sale

With a luxury property, the right marketing determines the sale.

  • Starting point: A luxury villa within the existing building with a narrow, clearly defined buyer pool.
  • smzh decision: Focus positioning and marketing early on the right buyers.
  • Value lever: Positioning, target buyers and marketing aligned to the narrow luxury market.
  • Result: Sale prepared; handover after completion.

Which decision is coming up for your property project?

Whether existing property, development, financing, letting or sale: we assess your starting position and show which next steps matter for structure, capital, implementation or sale.

Further reference projects

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Killwangen AG, 2 apartment buildings

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Bremgarten AG

Bremgarten AG, hotel conversion

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Küsnacht ZH, HIDE

Küsnacht ZH, HIDE

Five condominiums in the upmarket residential segment on the slope in Küsnacht, with views of Lake Zurich – developed with the buyers from the outset, in execution.

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