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Reference Guide

Document Guide

Plain-language explanations of the construction documents you will encounter in Croatian collective real estate projects — what each is, what it contains, and what to look for.

This is a reference guide, not legal or financial advice. The descriptions below explain what these documents are and how they are structured in Croatia. For advice on a specific project or investment decision, consult a qualified professional.

Document Types

The main document types explained

Each document type in a Croatian construction project has a specific purpose and a defined structure. Here is what you need to know about each one.

Close-up of an architectural floor plan showing room layouts and dimensions
Drawing

Tlocrt — Floor Plan

A horizontal cross-section through the building showing the layout of rooms, walls, doors, windows, and fixed elements. Each floor has its own plan. Key things to check: room labels match what is described in marketing materials; dimensions are shown and add up correctly; the plan is stamped by a licensed architect and bears a drawing number and revision mark.

Architectural cross-section drawing showing building height and floor construction details
Drawing

Presjek — Cross-Section

A vertical cut through the building showing the relationship between floors, ceiling heights, floor construction thicknesses, and structural elements. Cross-sections reveal information that floor plans cannot show: actual clear heights, staircase geometry, and how the building sits on its foundations. Check that ceiling heights match what is stated in the project description.

Area calculation table document showing net and gross floor area figures for each unit
Table

Tablica površina — Area Table

A tabular summary of the areas of all spaces in the building, typically broken down by floor and unit. Croatian construction practice distinguishes between neto korisna površina (net usable area) and bruto površina (gross floor area). The difference is significant: marketing materials sometimes use gross figures while contracts refer to net. Cross-reference the table against the floor plans to verify the figures.

Croatian building permit document with official stamps and signatures on a desk
Permit

Građevinska dozvola — Building Permit

The administrative decision issued by the relevant Croatian authority (usually the county administrative office or the State Administration Office) authorising construction. It references the main design by volume and drawing number, lists any conditions that must be satisfied before or during construction, and has a validity period (typically three years, extendable). Verify the permit is current, that the project it references matches the drawings you have been shown, and that any listed conditions have been addressed.

Detailed construction cost estimate spreadsheet showing trade categories and unit prices
Financial

Troškovnik — Cost Estimate

An itemised breakdown of the expected construction costs, organised by trade (earthworks, concrete works, masonry, carpentry, plumbing, electrical, finishing, etc.). A well-prepared cost estimate includes unit descriptions, quantities, unit prices, and totals for each item. Red flags: a single total figure with no breakdown; unit prices significantly below current market rates; categories missing entirely (e.g., no line items for finishing works in a residential project).

Complete set of construction project documentation folders stacked on an architect's desk
Package

Projektna dokumentacija — Project Package

The complete set of documents for a construction project. A full main design (glavni projekt) consists of multiple volumes: the architectural volume, the structural engineering volume, and volumes for each building services discipline. In a credible project, these volumes are numbered, dated, and stamped. The existence of a complete, stamped project package is one of the clearest indicators that a project is at an advanced stage of preparation.

Quick Reference

Questions to ask about any project

Before committing to any collective real estate project in Croatia, these are the document-related questions worth asking.

Is there a building permit, and can I see it?

A building permit is a public document in Croatia. If a project has one, there is no reason not to share it. Ask to see the original or a certified copy, not just a reference to it in a presentation. Check the date of issue, the validity period, and whether any conditions are listed.

Do the floor plans correspond to what is being sold?

Compare the floor plans in the main design (or the permit drawings) with the layout shown in the marketing materials. Room counts, sizes, and configurations should match. If the marketing shows a different layout, ask which version the permit covers.

Which area figure is used in the contract?

Ask specifically whether the price is based on net usable area or gross floor area, and ask to see the area table from the technical documentation. The difference between net and gross can be substantial in Croatian residential construction, particularly in buildings with thick walls or significant common areas.

Who prepared the cost estimate and when?

A cost estimate prepared several years ago may not reflect current material and labour costs. Ask for the date of the estimate and whether it has been updated. Ask who prepared it — an estimate from a qualified quantity surveyor or construction engineer carries more weight than one prepared internally by the project promoter.

Is the main design complete, and can I review it?

A complete main design should include an architectural volume, a structural engineering volume, and volumes for building services. Ask to see the table of contents for each volume. A project that cannot provide this documentation is at an earlier stage than its presentation may suggest.

Learn to read these documents yourself

The workshop teaches you to work through each of these document types independently, using real Croatian project examples.