What is a construction programme?
Topics: architects, construction, houses
Estimated reading time: 9 minutes
Author: Matt McKenna, Architect, BArch (Hons) DipArch MArch PGCert
ARB registration no. 083151D
Matt specialises in working with listed buildings and heritage projects. He is leading an office renovation in Clerkenwell and has recently completed several published private homes. Previously, he has worked on residential, healthcare and education projects, including achieving consent for a mixed-use scheme for a nursery and retirement village in open countryside.
Contact me: 020 3637 4236
Introduction
This guide explains what a construction programme is, how it fits within the RIBA Plan of Work, and how it is used to manage construction projects from start on site through to completion.
What is a construction programme?
A construction programme (also known as a construction schedule or build programme) is a detailed timetable for the works. It sets out:
• The main phases and tasks required to deliver the project
• Start and finish dates for each task
• The logical order and dependencies between tasks
• The labour, materials and equipment required
It provides a shared reference point for contractors, architects, project managers and clients, ensuring that everyone understands both the overall timescale and the short-term priorities on site.
The programme is a live document. As construction progresses, it is updated to reflect:
• Actual start and finish dates
• Delays caused by weather, late information or variations
• Additional work added to the contract
This live updating helps the team to re-sequence tasks, maintain momentum and communicate realistic completion dates to the client.
A draft programme for a residential project from RIBA stage 1 onwardsWhen is the programme produced?
The RIBA Plan of Work breaks down the life of a design project into stages, from the initial brief through to handover and use. When Stage 4 (Technical Design) is complete, you and your architect will prepare for construction.
Your architect will invite tendering contractors to produce both a price and an outline programme as part of their tender returns. The outline programme will highlight the number of weeks that the construction project will run for.
A contractor is then appointed and employed by the client to deliver the building works. At Stage 5 (Manufacturing and Construction), the building contract is signed, and the contractor starts the gearing up process, preparing for works to begin on site. The Contractor will review the outline programme and develop this into a detailed document. This detailed programme will be the primary tool for tracking progress and anticipating any potential construction delays.
Our rear extension to a Victorian house in HackneyWho prepares the construction programme?
Responsibility for the programme varies by project size:
• On larger projects, a project manager usually prepares and issues the construction programme. They liaise with the contractor, subcontractors, architect and consultants.
• On smaller residential projects, the main contractor often produces the construction programme and manages the site directly. The architect may review and comment on the programme on behalf of the client.
Whichever route is used, the programme should be agreed before work starts and then revisited regularly during the build.
Our two-storey rear extension in Dartmouth Park, north LondonKey components of a construction programme
Although each project is unique, most residential construction programmes include the following elements.
Task breakdown
The work is split into logical phases and then into specific tasks within each phase. For a typical house extension or refurbishment, the breakdown might include:
• Pre-construction and site setup – securing permits, installing hoarding, arranging welfare facilities and temporary services.
• Demolition and strip-out – removing existing structures, partitions, fixtures and finishes as required.
• Substructure and foundations – excavations, underpinning (where needed), foundations, drainage runs and ground floor slab.
• Superstructure and framing – walls, floors, roof structure, steelwork and primary load-bearing elements.
• Envelope and weatherproofing – external walls, insulation, windows and doors, roofing and waterproofing.
• MEP (Mechanical, Electrical and Plumbing) – first fix pipework, cabling, ventilation, heating and hot water systems.
• Internal finishes – plastering, joinery, second fix carpentry, tiling, flooring, kitchens, bathrooms and decorating.
• External works – terraces, steps, boundary walls, planting and other landscaping elements.
• Commissioning and handover – testing systems, snagging, client demonstrations, manuals and certificates.
Architecture for London is an RIBA Chartered Practice. View our latest projects, or if you would like to discuss your project, please contact us.
A Gantt chart showing a detailed construction programme for a house extension in London
Timeline
The programme allocates start and finish dates to each task. The timeline is structured around dependencies; for example:
- Foundations must be complete before the frame can be erected.
- The roof and windows must be installed before internal finishes start.
- First fix services must be complete before plastering.
Programmes are often shown as Gantt charts, making overlaps, lead-in periods and the critical path easily visible.
Key milestones
Certain dates are highlighted as milestones. Common examples include:
- Contract start and site possession
- Completion of demolition
- Achieving watertight shell
- Completion of first fix
- Completion of plastering
- Completion of second fix and finishes
- Practical completion and handover
Milestones are useful for monitoring progress, linking to stage payments and reporting to lenders or funders.
Resources
The programme identifies the resources needed for each task:
- Labour – main contractor, subcontractors, specialist trades.
- Materials – structural materials, insulation, windows, roof coverings, finishes and fixtures.
- Plant and equipment – scaffolding, access equipment, lifting equipment and specialist tools.
By planning resources in advance, the contractor can avoid gaps in labour and ensure that key materials arrive on time.
Our two-storey Georgian house extension near Regent’s ParkBudget and cost tracking
On some projects, tasks in the construction programme are linked to cost codes or work packages. This allows the team to:
- Track expenditure against programme activities
- Understand the cost impact of delays or changes
- Forecast cashflow and the final account more accurately
This integration of programme and cost information can be particularly helpful on larger or more complex residential projects.
Typical timescales for residential projects
Programme length depends on project scale, complexity and site constraints. As a broad guide for London residential work:
- Internal refurbishment only: 3–6 months
- Single-storey rear extension: 4–7 months
- Two-storey extension and renovation: 6–12 months
- Full house refurbishment and extension: 9–18 months
Early discussions with your architect and contractor are essential to set realistic timescales and to plan temporary accommodation and financing around the construction programme.
Our rear extension to a listed Georgian house in Islington, north LondonProgramme challenges
Even with careful planning, construction projects rarely run exactly to the original programme. Factors that can affect a residential construction programme include:
- Weather delays – heavy rain, snow or extreme weather can disrupt work, especially during groundwork, roofing and external finishes.
- Supply chain issues – material shortages, long lead-in times for bespoke items, and transport delays.
- Labour shortages – difficulty sourcing specialist subcontractors at the right time.
- Design changes – client variations, planning changes or detailed design information issued later than planned.
Mitigation measures include building float into the programme where possible, ordering long lead items early, and maintaining clear communication between the design team, contractor and client.
Regularly updating the programme and sharing it with the client helps to set expectations and build trust.
How is a construction programme used?
Once work starts on site, the programme is a central tool for project management and communication.
- Site meetings – progress is compared against the programme, and actions are agreed to recover lost time where necessary.
- Decision planning – the programme highlights when client decisions on finishes, fittings and variations must be made.
- Financial planning – lenders and self-build mortgage providers often require evidence of progress against the construction programme before releasing further funds.
For clients, an up-to-date programme makes it easier to:
- Plan temporary accommodation or phased moves
- Arrange time off work for key site visits
- Understand the impact of requested changes on overall timescales
Facade refurbishment, Regents Park HouseSummary
A well-prepared construction programme is a critical tool for ensuring that a residential project is delivered efficiently and with fewer surprises. By breaking the work into clear stages, setting realistic timescales and regularly reviewing progress, it provides structure and transparency for everyone involved.
At Architecture for London, we work closely with our in-house construction company, AFL Build, to develop and monitor detailed construction programmes on our projects. This integrated approach helps us to coordinate design and construction, maintain effective communication throughout the build and deliver well-crafted homes for our clients.
Discover Architecture for London’s projects. If you would like to discuss your project or construction programme, please contact us.