100 m² Light Steel House Cost 2026: Including Foundation, Transport and Installation

Main cost items of a 100 m² light steel house

The cost of a 100 m² light steel house cannot be expressed with a single m² price. The total consists of the building cost (frame and panels), foundation, transport for logistics, on-site installation and the official permit-occupancy fees.

Considering these items separately makes comparison healthier. Even if two suppliers offer the same per-m² price, hidden items like foundation or transport prevent the customer from seeing the real total cost.

• Building cost is the central scope item.
• Foundation cost is finalized after the survey.
• Transport varies by distance.
• Installation depends on site conditions.
• Occupancy fees depend on municipal practice.

Building cost: a direct reflection of the package

The building cost includes the steel frame, sandwich or double-skin panels, roof system, exterior cladding, interior finish, doors-windows and standard electrical-mechanical works. Although this item shows minor variations between suppliers, the package level is the main driver.

The basic package has standard finishes and doors-windows; the medium package adds better insulation and decorative surfaces; the premium package brings full insulation, double glazing, premium openings and decorative materials. For the same 100 m², the building cost gap between basic and premium is significant.

• Basic: standard finishes and openings.
• Medium: improved insulation and exterior.
• Premium: high-end insulation and materials.
• Package level directly drives the m² price.

Foundation cost: depends on the soil survey

Light steel houses are light, so the foundation item remains smaller than reinforced concrete; still, the soil survey determines the foundation type. On firm soil, a stepped foundation is economical; on saturated or weak soil, a raft or piled foundation is recommended.

For 100 m², the foundation item is typically planned within 8-15% of the building cost. Across Kocaeli, Bursa and Tekirdag with different soil profiles, this share can vary, so soil data must be reviewed before the survey.

• Stepped foundation works on firm soil.
• Raft foundation is preferred on saturated soil.
• Piled foundation may be needed on weak soil.
• Foundation is 8-15% of the building cost.

Transport and installation: distance and site story

Transport varies with the distance from the production hub to the site. Deliveries from AYD's Buyukcekmece hub to Kocaeli, Bursa or Tekirdag are calculated based on distance, fuel and insurance. On short routes this item is 3-5% of the total cost; on long routes it can reach 6-8%.

Installation depends on site conditions. Flat, accessible sites finish faster; sloped, narrow or difficult sites add work items. Crane requirements, temporary lodging and site safety reflect on this line.

• Transport is in the 3-8% range of total cost.
• Installation depends on site slope and access.
• Crane needs may add an extra item.
• Flat and accessible sites lower the cost.

Occupancy and official fees: the often-skipped item

Permit and occupancy fees are frequently overlooked but must be planned. Zoning fees, building inspection, energy identity certificate (EKB), title fees and revolving fund items together can reach 3-6% of the building cost.

This item varies by municipality and province. The same package and m² can produce different total fees in different cities. For a healthy budget, it should be shown as a separate line in the offer.

• Zoning and permit fees are paid to the municipality.
• Building inspection is a separate item.
• EKB is mandatory for all new buildings.
• Title and revolving fund fees are separate.
• Total official fees reach 3-6% of the building cost.

Optional items: plan extras outside the package separately

Kitchen, bathroom cabinetry, wardrobes, landscape, perimeter wall, AC, solar panels and custom interior items are often outside the base package. Customers either add these during selection or work with separate suppliers.

Listing these items at the start clarifies the total budget. AYD presents optional items in a separate table during the offer stage so there are no surprises in the cost.

• Kitchen and cabinetry are optional.
• Landscape and perimeter wall are planned separately.
• AC, solar and EV charging can be added later.
• Custom design items require extra budget.
• Optional items must be listed up front.

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