Stats of your Design Visa

TBA / Density / C Int / P Ver are all stats of your design visa. Short description:

TBA is the Total Build Area of all the floors of the basic and supplementary construction on and above the terrain, including the entire areas of balconies, loggias and terraces in the above the ground floors calculated by their outer outlines. The TBA does NOT include:

  • The floors below the terrain.
  • The built areas in the under-roof spaces of buildings, provide they are storage rooms.

Density of the construction is the ratio of the [sum of the built areas of all the basic and supplementing constructions in the plot (BA)] to the [area of the plot] – expressed by percent.

Intensity of the construction is the ratio of the [TBA of all the buildings in the land plot] to the [area of the plot] – expressed by absolute number.

Percent of green land of the plot (P Ver) is the ratio of the [area under the natural vegetation] to the [area of the plot] – expressed by percent.

Formulas and an Example (let’s assume we have the following information on our visa):

  • The area of the land plot is 300 sq. m.
  • We are allowed 50% density
  • We are allowed 2.5 C Int
  • We have P Ver no less than 30%


We want to find the allowed TBA and the BA of our future building. This means that:


BA/300 = 50/100 => BA = 150 => our building could be erected on a maximum of 150sq.m.

TBA/300 = 2.5 => TBA = 750 => the total build area will have a maximum of 750 sq. m.

P Ver/300 = 30/100 => P Ver = 90 => we must have at least 90 sq. m. of vegetation (green land) in the land plot.

Design Visa

Issued by:

Respective municipal administration based on the current detailed plan development plan (DDP) and is signed by the chief architect of the municipality for a specific regulated landed property (RLP).


  • To allow the designing of the regulated landed property (by defining the means and the type of development and/or the development possibility in accordance to the building rules and the legislation)
  • To certify that a landed property exists and that it is regulated (and according to an acting DDP it has defined boundaries, size, characteristics, access to the property, designation, etc.)

It Has the Following Parameters:

  • Exact name of the site;
  • Name of the owner;
  • Ownership document;
  • Location;
  • Type of development and designation of the building;
  • Maximum permissible value required;
  • Measures and distances of the developing;
  • Architectural, planning, ecological, infrastructural and the information for usage of water, energy and other resources;
  • Necessary documents that have to be produced by the contractor or the owner.

Necessary Documents:

  • Application form (2 copies)
  • Ownership document copy
  • Motivated proposal or a sketch proposal (if necessary)
  • Neighbours’ agreement verified by a Notary Public (when supplementing building up takes place under art. 21, p 2 of the Spatial Development Act /SDA/).

Issue Time: 14 days;

Validity: 6 months. Afterwards it is a subject of revalidation;

What Happens Next:

After getting a design visa, you can start working with an architect and start preliminary contracts for joining the power and water supply networks;

BG version here.

All about Acts – plain and simple

ACT 12 /for establishing of all types of building and installation works (ВIW), planned for embedding, certifies that the requirements of the project are met/ – only for the electrical and water installations (that are hidden in the structure). These works, after they are done, are masked either underneath the daub or in the terrain and further comprehensive inspection is not possible. That is why they have to be inspected and approved by the relevant engineers before their embedding.

ACT 13 /for establishing of damage, caused by overpowering forces of nature / this act is between the builder and the owner of the plot.

ACT 14 /for acceptance of the structure “rough building”/ – only for the construction engineer. They accept the structure and sign that it has been built according to the plans and also that the BIW meet the relevant technical requirements.

ACT 15 /for establishing the acceptability of the building/ – for all engineers, architects and owners of sites in the building. This act documents the handing of the building and the building documentation from the builder to the owner. IMPORTANT! This act does not allow the exploitation of the building and in no way guarantees that it will pass the final inspection and get Act 16!

ACT 16 /for establishing the suitability of the construction for exploitation/ – compiled by officers authorized with an order for the appointment of a State Acceptance Commission (SAC) by the chief of the Directorate for National Building Control (DNBC). Protocol 16 is mandatory only for constructions of categories one to three. The SAC consists of the owner, representatives of specialized control bodies, construction inspection body and additionally invited specialists.

Act 16 is issued to certify and permit the exploitation of a building so that it can be legally inhabited. The document is issued, after it is established that there is an approved project for the construction and that the construction has been executed strictly according to the investment project and also the ownership rights are properly verified.

An official „Exploitation certificate“ or „Certificate for commissioning“ can be issued on grounds of Act 16. The lack of such a certificate can mean that:
• there is a discrepancy between the approved projects and the executed construction on site.
• a certain building (or part of it) has been erected with no approved projects and without legalizing it the permission for using the building cannot be granted.

Information if a certain building has been provided with an exploitation certificate can be obtained at the regional DNBC or from the salesman directly.

For more information: Ordinance № 3, 31 July 2003 Г. on issuing of acts and protocols during construction; Appendix № 1 to art. 7, para. 3, p. 1