DELTAproject
Perfectly organised, simply.
An elegant software solution that efficiently handles your project management and construction administration tasks.
All team members access the same address database, work with identical project structures and produce documents in your company’s corporate design. This ensures all project information is quickly retrievable.
Depending on staff responsibilities, the base program can be extended with modules – for example, for construction administration, invoicing or project controlling.
DELTAproject has been developed in Switzerland since 1992 by ETH engineers and is designed for architects, planners, site managers, engineers and landscape architects.
Kostenlose Webinare:
Einblicke in DELTAproject.
Projektmanagement und Bauadministration, einfach perfekt organisiert.
DELTAdevis receives CRB certification for NPK-based estimating, valid until 2029.
CRB-certified until 2029.
DELTAdevis has successfully obtained CRB certification for NPK-based estimating, valid until 2029. The CRB (Swiss Central Office for Construction Rationalisation) requires software solutions to be recertified every five years to maintain high quality standards.
DELTAdevis has passed this review, ensuring continued access to NPK/CAN/CPN data for the next five years.
The DQ Solutions Architecture Team
Fully committed to architects and planners
Our architecture team members have worked together for over 10 years and are fully committed to meeting the needs of architects and planners.
With us, you get hardware and software from a single source – perfectly aligned.
Applications
Manage construction projects
Centralise and share data and documents.
The DELTAproject base module covers essential office tasks such as address management, correspondence, meeting minutes, project tasks, drawing management and distribution.
Required modules: #DELTAproject
Project documents and correspondence.
Create documents quickly and efficiently.
Ideal for letters, mail merges, delivery notes and other project documents. Documents can be saved as PDFs, printed and reused (e.g., sent by email).
Required modules: #DELTAproject
Time tracking.
Efficient time recording for projects and staff.
All staff continuously log their hours. Project managers analyse booked hours, compare them against budgets and steer projects accordingly. Administration generates monthly staff timesheets. Management maintains full visibility over projects and the office.
Required modules: #DELTAproject
Project effort planning and analysis.
Plan hour budgets and track project success.
With DELTAplanning, you plan and control your projects. Create monthly budgets from fee agreements and allocate team resources effectively. Regularly review internal workload against plans.
Trends and deviations are immediately visible. You always know the project status and profit forecast.
Required modules: #DELTAplanning
Fee agreements and invoices.
Architect fee calculation and invoice planning.
Calculate your fee based on actual time or construction costs. Generate payment schedules and prepare invoices. Compare incoming payments against actual time and project progress.
With DELTAfaktura, you create invoices at the click of a button, including QR codes for printing.
Required modules: #DELTAhonorar, #DELTAfaktura
SIA-compliant business metrics.
Always in control of workforce productivity.
DELTAreport calculates key performance indicators from staff time entries, distinguishing billable and non-billable hours, and displays workload statistics. These metrics enhance transparency of effort and support financial management in planning offices.
Required modules: #DELTAreport
Construction administration.
Modern construction management.
Most architects, engineers and site managers now use professional software for construction administration. Legally compliant bills of quantities are created exclusively using NPK. SIA451 has become the standard format for data exchange. eBKP is gaining importance through BIM. DELTAproject’s construction administration is based on CRB standards and runs on macOS and Windows.
Required modules: #DELTAbauad, #DELTAbaucost, #DELTAeBKP, #DELTAdevis
Cost estimation using eBKP.
Cost estimation based on the elemental method.
With eBKP, you perform cost estimates using the elemental method. By systematically assigning quantities to individual elements, you quickly determine total project costs.
Required modules: #DELTAeBKP
Cost forecast using BKP.
The execution-oriented cost view.
The cost forecast is the basis for cost control in DELTAbauad. You calculate it based on the BKP (construction cost plan). Optionally, you can prepare multiple variants for the client to select before transferring to construction accounting.
Required modules: #DELTAbauad, #DELTAbaucost
NPK-based estimating.
Legally compliant billing.
With DELTAdevis, you handle all NPK-related tasks, including tender creation, price comparisons and works contracts. DELTAdevis is certified to IfA 18 standards.
Required modules: #DELTAdevis, #DELTAbauad
Construction accounting.
Costs under control.
With construction accounting, you monitor and manage your project costs. Create mutations, works contracts, variations and payments, and compare cost forecasts against actuals.
Required modules: #DELTAbauad, #DELTAbaucost
Modules
DELTAproject
Core program for office and project administration.
DELTAhonorar
Calculate, manage and control fee agreements.
DELTAbaucost
Calculate cost forecasts quickly and accurately and maintain full cost oversight.
DELTAplanning
Plan resources and staff deployment.
DELTAfaktura
Create invoices efficiently and monitor incoming payments.
DELTAebkp
Accurately determine construction costs.
DELTAcontrol
Powerful control tool for management.
DELTAbauad
Perfectly structured construction administration with DELTAdevis and DELTAbaucost.
DELTAserver
Server service.
DELTAreport
Meaningful productivity KPIs and staff time statistics.
DELTAdevis
Efficient and legally compliant estimating.
Resources
Discover DELTAproject
The easiest way to explore a project and construction administration solution is to use the software yourself. Request the fully functional, unlimited and free trial version now. We support your first steps with extensive online tutorials.
Learn DELTAproject
We regularly offer training courses on DELTAproject or individual modules. Details and course descriptions are available in the “Webinars” section.
For self-study or reference, our YouTube channel is also available.
System requirements
Current version: 16
As of: July 2025
All DELTAproject modules are available in German, French and Italian.
macOS
- Client: Intel processor (64-bit) or Apple Silicon (M1/M2/M3) / macOS Big Sur (version 11) or later / min. 2 GB free RAM
- Server: Intel processor (64-bit) or Apple Silicon (M1/M2/M3) / macOS Big Sur (version 11) or later / min. 2 GB free RAM
- Internet connection
Windows
- Client: 64-bit Windows PC / Windows 11 or Windows 10 (64-bit) / min. 2 GB free RAM
- Server: 64-bit Windows PC / Windows 11 or Windows 10 (64-bit) / min. 2 GB free RAM
- Internet connection
DELTAservice
- Synology NAS with DSM 7.2 and “Container Manager”
- DELTAservice as Docker container
DELTAproject enables our company to efficiently handle all administrative aspects of the construction process. As a mid-sized company, we particularly benefit from the flexibility to assemble and expand software modules according to our needs. Thanks to the constant drive for improvement and the competent support, DQ Solutions has proven to be a reliable partner, always taking our concerns seriously and offering solutions tailored to our needs.
Janosh Roux | CEO | Riesen Roux Architektur GmbH
We are thrilled with the collaboration with DQ Solutions in the DELTAproject area. The support includes licenses, maintenance, and support, as well as device leasing for our MacBook, Mac Studio, and iPad infrastructure. The team works precisely and quickly, always delivering satisfactory results and impressing with their helpful and friendly approach. This combination ensures smooth support and makes DQ Solutions a reliable partner.
Christian Messerli | Architect/Managing Director | Akkurat Bauatelier AG
We appreciate the good collaboration in system support. Especially noteworthy is the fact that the contact persons are quickly and reliably available in emergencies. The low staff turnover also ensures continuity and strengthens the foundation for long-term, successful cooperation.
Roman Brantschen | Managing Director | Adrian Streich Architekten AG
