DEIKON Construction Cost

Philipp Doukakis

In-app purchases

About this app

DEIKON is an architect-developed construction cost estimation app for new-build residential projects in Greece.

Created by a practicing architect, DEIKON helps homeowners, developers, investors, and construction professionals understand how construction costs are structured before committing to a project.

Adjust the building size, basement areas, terraces, balconies, energy features, technical systems, and other project parameters to see how each decision affects the total cost. Identify the main cost drivers and understand where your budget is going.

DEIKON also considers land and site conditions, including terrain, soil characteristics, site access, and other factors that can significantly affect construction costs.

The app makes the structure of construction costs more transparent — including construction categories, professional fees, additional expenses, and often overlooked cost items. This allows you to compare different scenarios, make better early-stage decisions, and reduce unnecessary costs before moving forward.

For developers and professionals, DEIKON supports early-stage project evaluation by helping estimate total project costs and assess potential feasibility and profitability.

The cost model is currently focused on new-build residential projects in Greece and may expand to other Mediterranean countries in the future.

Key features

• Architect-developed cost estimation model
• Understand how construction costs are structured
• Identify the main cost drivers
• Adjust building size, basement areas, terraces, and balconies
• Include energy features and technical systems
• Include land, site, terrain, soil, and access conditions
• Compare different project scenarios
• Include professional fees and often overlooked cost categories
• Generate structured cost breakdowns
• Export summaries in PDF or Excel format

Designed for

• Homeowners planning a new-build home in Greece
• Developers and real estate investors
• Architects and construction professionals
• Anyone who wants a clearer early-stage cost picture before starting a project

Flexible access

Create and explore estimates for free. Advanced exports and professional features are available through in-app purchases and subscriptions.

Important note

DEIKON is designed for new-build residential projects in Greece. Estimates are indicative and intended for early planning, scenario comparison, and cost understanding. DEIKON does not replace project-specific professional advice, detailed quantity surveying, contractor pricing, or official cost documentation.

What’s new

Initial production release.

This version includes improved account sign-in feedback, clearer subscription and billing behavior, native Plus/Pro trial handling for eligible free accounts, updated legal/contact pages, and general stability improvements.