Process

We lead each project through clear stages—from first meeting to construction and final presentation. NineHertz manages the process and schedule, while the client makes key decisions.
Initial Consultation
We learn about the project, site and client needs, then define the scope.
Client
- Project, needs and priorities
- Site and records
- Target budget
- Target timeline
- References
NineHertz
- Initial review
- Planning and legal review
- Scope and approach
- Phases and consultants
- Proposed next steps
Concept Design
We shape the project’s concept, layout and character.
Client
- Intended use
- Functional needs
- References
- Feedback
- Final direction approval
NineHertz
- Site and brief analysis
- Concept and layout
- Form, mood and materials
- Drawings, models and visualisations
- Budget alignment
Project Documentation
We turn the concept into detailed documents for construction and procurement.
Client
- Design approval
- Budget approval
- Material and equipment selection
- Change decisions
- Contractor selection
NineHertz
- Construction drawings and details
- Materials and finishes
- Bespoke elements
- Technical systems coordination
- Clash resolution
Permits
We prepare and submit all documents and lead the permitting process.
Client
- Ownership and existing records
- Authorisations and consents
- Key decision approval
- Fees and contributions
NineHertz
- Statutory review
- Required procedure
- Document preparation and coordination
- Official system submission
- Authority liaison
Construction and Design Supervision
We oversee delivery, resolve details and protect the concept’s quality and integrity.
Client
- Site access and work conditions
- Timely approvals
- Change approval
- Contractor selection and appointment
NineHertz
- Contractor and supplier proposals
- Cost and delivery tracking
- Site visits and works monitoring
- Sample and shop drawing review
- Details, changes and concept integrity
Final Curation
We complete the project through final selections and styling.
Client
- Final furnishing budget
- Final selection approval
- Access to the space
- Presentation approval
NineHertz
- Furnishing and artwork selection
- Procurement and installation
- Space styling
- Photography direction
- Website and media preparation

For investors and developers — what working with us means
The concept and design decisions are developed in response to the target audience, market positioning, intended use and investment framework. The aim is to create a distinctive project with long-term value.
NineHertz leads the project and coordinates designers, specialist consultants, suppliers and other participants. The investor communicates with one team, without having to coordinate all parties independently.
The project is divided into clearly defined phases, with the scope, timeframe and required decisions established in advance. This allows the investor to coordinate the design process with financing, procurement and the start of construction.
The investor receives a concise overview of progress, outstanding matters, next steps and potential risks. Required decisions and their possible impact on the budget or schedule are clearly identified.
The project is followed from concept and documentation through construction, final styling and handover or opening. During construction, NineHertz resolves additional details and safeguards the project’s quality through to completion.
How We Define the Project Scope and Fee
Phases · Services · Documentation
Which phases and services the project includes — concept design, interior, legal and design documentation, the detailed design and other agreed phases.
Details · Bespoke Elements
The fee depends on how far the project is developed — from a functional, rational solution to fully detailed elements, custom furniture and specific construction details.
Floor Area · Type · Complexity
The project’s floor area affects the scope of work, but is always considered together with its type and complexity.
Coordination · Processes · Deadlines
When needed, NineHertz takes on partial or full management of the project, including coordinating the participants, processes and deadlines.
Structural · Mechanical · Electrical
When required, the proposal also includes other engineering disciplines such as structural, mechanical and electrical engineering and other specialist consultants.
Not sure where to start?
Book a 15-minute intro call and go through the basics of your project with us.
FAQ
NineHertz works on architecture, interior design and total design projects of different scales and uses. Each service is tailored to the project type, complexity, location and required scope of documentation.
Yes. NineHertz designs private houses and villas, residential buildings, hotels, restaurants, hospitality venues and other commercial spaces. Each project is developed in response to its location, intended use, users and investment goals.
Yes. The total design service combines architecture and interior design into one coherent project. Spatial organization, structure, building systems, materials, lighting, equipment and details are developed as parts of the same concept.
An architect should be involved as early as possible—ideally before purchasing a property or plot, setting the budget or making major spatial decisions. Early involvement allows the project’s possibilities, constraints and potential risks to be assessed in time.
Yes. You do not need a finished concept or a defined style before the first conversation. Through discussion, analysis and references, NineHertz helps define the project brief, priorities and possible direction.
Yes. NineHertz can review planning regulations, available documentation, development or reconstruction potential, and identify key limitations and risks. The scope of the assessment depends on the type of property and the information available.
During the first conversation, NineHertz learns about the client, location, requirements, ambitions, planned budget and timeframe. It is helpful to provide the address or plot details, available drawings and documents, photographs of the existing condition and a short description of the intended project.
NineHertz does not determine its fee solely by floor area. Each proposal is prepared individually based on the type of project, programme complexity, required documentation, level of detail and agreed scope of services. Two projects of the same size may require entirely different levels of work.
The initial information should include the location, approximate area, intended use, required scope of services, available documentation, planned budget and expected timeframe. If some information is not yet available, it can be defined during the initial conversation.
Depending on the project, the service may include an initial consultation, conceptual design, statutory documentation, detailed design documentation, coordination of consultants, design supervision, final curation and photography.
Conceptual design defines the project’s concept, programme, spatial organization and character. Statutory documentation includes the designs, reports, conditions and procedures required by applicable regulations. Detailed design documentation develops the drawings, materials, equipment and construction details required for tendering, procurement and execution.
Yes, when these services form part of the agreed scope. NineHertz identifies the required documentation, coordinates licensed consultants and specialist designers, and manages communication with the relevant authorities. The duration of procedures involving authorities and other external parties cannot be guaranteed in advance.
The duration depends on the project type, scale, complexity and required documentation. The project is divided into phases, each with a defined scope, indicative timeframe and required client decisions. NineHertz leads the project pace, while external consultants and statutory procedures may affect the overall schedule.
The investment framework is defined at the beginning and considered throughout concept development, material selection and prioritization. Decisions that may affect costs are clearly presented to the client. When a detailed estimate is required, it is coordinated with contractors or construction cost specialists.
The client defines their requirements and participates in key decisions but does not need to manage the project. NineHertz sets the pace, coordinates participants and manages the next steps, keeping the client involved without burdening them with the project’s daily management.
Yes. NineHertz can be appointed for an individual phase or join a project that is already underway. Before taking over, NineHertz reviews the existing documentation, current status, technical conditions and authorship rights, and then defines the appropriate scope and responsibilities.
Design supervision protects the architectural concept, design details and consistency between the documentation and execution. During construction, NineHertz clarifies the documentation and resolves additional design details. Statutory construction supervision is a separate service that monitors compliance with regulations, permits and technical requirements.
Yes. NineHertz works on projects outside Zagreb and with clients based abroad. Communication, presentations and progress reports can be managed online, combined with scheduled site visits. For projects outside Croatia, the scope is coordinated with local regulations and locally licensed consultants.
NineHertz provides investors and developers with concept development, architectural and interior design, coordination of documentation and consultants, and project support through construction and handover. Each project is aligned with its target audience, market positioning, intended use, investment framework and schedule.
Quality architecture brings together functionality, a recognizable identity, user experience and the long-term performance of a space. A carefully developed programme, efficient organization, appropriate materials and consistent execution can strengthen market positioning and distinguish a project from comparable developments.