Registration with KAB and KIIP — Design Competence for Architects and Engineers in Bulgaria (2026)

Legal Framework — the Chambers Act (ZKAIIP), KAB and KIIP

The principal legislation governing the professional chambers in architecture and engineering design is the Act on the Chambers of Architects and Engineers in Investment Design (ZKAIIP). The Act establishes the creation, organisation and functions of the two chambers, the conditions for acquiring and losing design competence, and the disciplinary liability of members.

ZKAIIP makes registration mandatory — without enrolment in the relevant register of KAB or KIIP, an individual cannot independently practise design activity. The Act also defines two tiers of competence — full and limited — each carrying different scope of powers and requirements.

Additional applicable legislation includes the Spatial Planning Act (ZUT), which sets out the categories of construction works and the requirements for investment projects, as well as the secondary regulations under ZUT specifying the technical standards.

Two Chambers — When KAB, When KIIP

There are two professional chambers in investment design, each covering a different group of specialists:

Chamber of Architects in Bulgaria (KAB)

KAB unites design professionals in the following fields:

• Architects — holders of a higher-education degree in Architecture
• Landscape architects — specialists in landscape architecture and landscaping
• Urban planners — specialists in urban planning and spatial development

Chamber of Engineers in Investment Design (KIIP)

KIIP covers engineers from all specialities involved in investment design, including:

• Structural engineers — structural design of buildings and facilities
• Water-supply and sewerage (WSS) engineers — water supply and drainage systems
• Electrical engineers — electrical installations and equipment
• HVAC engineers — heating, ventilation and air conditioning
• Geodesists — geodetic design
• Transport-infrastructure engineers — roads, bridges, tunnels
• Fire safety, telecommunications, technology and other specialities

The determining criterion is the designer's speciality — if you practise architectural design, you register with KAB; if you practise engineering design in any speciality, you register with KIIP.

Full and Limited Design Competence

ZKAIIP distinguishes two types of design competence, each defining the scope of permissible professional activity:

Full design competence is a mandatory condition for individuals who lead the design process and sign investment projects. Limited competence is intended for specialists working as part of a design team without bearing lead responsibility.

Requirements for Full Design Competence

The conditions for acquiring full design competence differ for architects and engineers:

Architects (registration with KAB)

1. Education: higher education with a Master's degree in Architecture from an accredited university
2. Design experience: a minimum of 2 years of design practice conducted under the supervision of a designer holding full competence
3. Membership: mandatory enrolment as a member of KAB

Engineers (registration with KIIP)

1. Education: higher engineering education in the relevant speciality — Bachelor's or Master's degree
2. Design experience:
   • For Master's degree holders: minimum 2 years of design practice
   • For Bachelor's degree holders: minimum 4 years of design practice
3. Membership: mandatory enrolment as a member of KIIP

The design practice must be genuine — carried out under the direct supervision of a competent designer and documented with a certificate from the employer or supervising designer. The practice must include participation in the preparation of investment projects in the relevant speciality.

Chamber Membership — Mandatory vs Voluntary

One of the most common questions is whether membership of KAB or KIIP is compulsory. The answer depends on the type of competence the designer wishes to obtain:

In practical terms, if you wish to sign investment projects independently as a lead designer, you must become a member of the relevant chamber. If you work as part of a design team with limited competence, membership is optional, but annual registration is still required.

Membership confers additional benefits — voting rights at general assemblies, eligibility for governing bodies, access to professional training and events, and preferential terms for professional-indemnity insurance.

Registration Procedure — Step by Step

The procedure for acquiring design competence and registering with KAB or KIIP involves the following stages:

1. Preparation of documents. The applicant prepares:
   • An application form prescribed by the relevant chamber
   • A copy of the higher-education diploma (architecture or engineering)
   • A certificate of design practice — issued by the employer or supervising designer with full competence, describing the specific projects
   • A curriculum vitae focusing on professional experience
   • A criminal-record certificate
   • Proof of payment of the admission fee
2. Filing the application. Documents are submitted to the regional collegium of KAB or KIIP at the applicant's place of residence. Filing may be done in person or through an authorised representative.
3. Review by the governing board. The regional governing board examines the application and supporting documents, assesses compliance with the statutory requirements and may request additional documents or clarifications.
4. Decision and enrolment. Upon a positive decision, the applicant is entered in the chamber's register of competent persons. A certificate of design competence and a personal seal are issued.
5. Receiving the seal. The designer receives a personal seal, which is a mandatory element when signing investment projects. The seal bears the full name, registration number and speciality.

The entire process from filing the application to issuing the certificate typically takes 2 to 4 weeks, provided all documents are correctly prepared.

Registration of Design Contracts

In addition to registering the designers themselves, ZKAIIP imposes an obligation to register certain categories of contracts with the relevant chamber:

• Scope: contracts for the preparation of spatial plans and for investment design of construction works of Categories I to IV must be registered
• Deadline: the contract must be registered with KAB or KIIP within 1 month of its execution
• Legal protection: registration provides additional legal protection for the designer, including in cases of non-payment by the client — a registered contract can serve as evidence in court proceedings
• Fee: a fee is payable for contract registration (see the "Fees" section)

Failure to register a contract that is subject to mandatory registration constitutes a breach of professional obligations and may result in disciplinary liability.

KAB Registration Fees (2026)

The current fees of the Chamber of Architects in Bulgaria for 2026, according to the official tariff, are as follows:

KIIP fees follow a similar structure — an admission fee, annual membership fee and certificate fees. The specific amounts are set by the KIIP General Assembly and may differ from those of KAB. We recommend checking the current figures on the official KIIP website before filing your application.

Payment of the annual membership fee is a condition for maintaining active registration status. The chamber may cancel the enrolment for non-payment after prior notice.

Recognition of EU/EEA Qualifications

Bulgaria applies Directive 2005/36/EC on the recognition of professional qualifications, which has been transposed into national law. The recognition regime depends on the profession:

Architects from the EU/EEA

The architectural profession falls under the automatic-recognition system pursuant to Annex V of the Directive. This means that architects holding a diploma from an accredited university in an EU Member State that meets the minimum training requirements under the Directive can register with KAB through a simplified procedure — without additional examinations or traineeships.

Engineers from the EU/EEA

Engineering specialities do not fall under the automatic-recognition regime. They are subject to the general recognition system, under which KAB/KIIP compares the applicant's qualifications with Bulgarian requirements. Where substantial differences exist, a compensatory measure may be imposed — an aptitude test or an adaptation period.

In both cases, EU/EEA applicants submit an application to the relevant chamber, accompanied by documents evidencing their education, practice and competence from the home state. The chamber issues its decision within the period prescribed by law.

Sanctions for Practising Without Competence

The legislation provides for serious consequences for individuals who carry out design activities without proper registration and competence:

• Administrative fine: any person who carries out design activity without enrolment in the register of competent designers is subject to an administrative sanction under ZKAIIP
• Invalidity of projects: investment projects prepared and signed by a person without competence have no legal effect — they cannot be approved by the municipal administration and cannot serve as grounds for issuing a construction permit
• Disciplinary measures: where registered members breach their professional obligations and the code of ethics, the chamber may impose disciplinary penalties — ranging from a warning to removal from the register
• Loss of competence: in cases of serious or repeated violations, the chamber may cancel the designer's enrolment, meaning a complete loss of the right to practise design activity

Oversight is exercised both by the chambers and by the Directorate for National Construction Control (DNSK), which carries out inspections of construction works and related design documentation.

Frequently Asked Questions