Commercial Fitout Timeline: From Concept to Opening
Published: April 2026 | Reading time: 6 minutes | Author: Renovive
Introduction
One of the most common questions we hear is: "How long will my fitout take?" The answer depends on the size and complexity of your project, but understanding the typical timeline helps you plan your opening date, arrange financing, and manage expectations.
In this guide, we'll break down the commercial fitout timeline into realistic phases and show you what to expect at each stage.
The Commercial Fitout Timeline: Overview
Please note: All timelines are project-by-project and vary based on space condition, complexity, planning requirements, and local factors. The following are typical timescales for a 1500 sqft space:
| Phase | Duration | What Happens |
|---|---|---|
| Pre-project planning | 1–2 weeks | Concept, budget, site survey, contractor selection |
| Design and approvals | 2–3 weeks | Detailed design, client sign-off, planning permission (if needed) |
| Procurement | 1–2 weeks | Order materials, fixtures, equipment |
| Site preparation | 1 week | Clear space, assess condition, prepare for work |
| Fitout and construction | 4–12 weeks | Depends on project size — small projects 4–6 weeks, large projects 10–12 weeks |
| Inspection and handover | 1 week | Final checks, compliance sign-off |
| Total | 10–21 weeks | 2.5–5 months |
Typical commercial fitouts take 2.5–5 months from concept to opening, depending on project size and complexity.
Phase-by-Phase Breakdown
Phase 1: Pre-Project Planning (1–2 weeks)
What happens:
- You define your concept, budget, and opening date
- You visit potential spaces and select a location
- You hire a fitout contractor and/or designer
- The contractor conducts a site survey and assesses the space condition
Key decisions:
- Budget allocation
- Specification level (budget, mid-range, premium)
- Must-have features vs. nice-to-haves
- Contractor selection
What you should do:
- Be clear about your budget and opening date
- Provide the contractor with detailed information about your business
- Ask questions and clarify expectations upfront
Phase 2: Design and Approvals (2–3 weeks)
What happens:
- The designer creates detailed plans (floor layout, elevations, finishes, lighting)
- You review and approve designs
- Planning permission is obtained (if required)
- Building regulation approval is sought
- Detailed specifications and quotes are prepared
Key decisions:
- Finishes, colours, and materials
- Layout and customer flow
- Lighting design
- Signage and branding elements
- Equipment specifications
Timeline drivers:
- How quickly you make decisions on design
- Whether planning permission is required (adds 4–8 weeks)
- Complexity of the design
What you should do:
- Be prepared to make decisions quickly
- Have a clear vision of what you want (mood boards, reference images help)
- Understand planning requirements early — don't wait until after design is done
- Approve designs in writing so there's no confusion later
Planning Permission Note: If your fitout requires planning permission (e.g., change of use, external alterations, or listed building), add 8–12 weeks to your timeline (sometimes longer if the application is complex or planners request further information). Check with your local council early.
Phase 3: Procurement (1–2 weeks)
What happens:
- Materials, fixtures, and equipment are ordered
- Lead times are confirmed with suppliers
- Delivery schedules are coordinated
- Any bespoke items (custom joinery, signage) are manufactured
What you should do:
- Order early, especially for long-lead items
- Confirm delivery dates in writing
- Have a contingency plan if items are delayed
- Ensure the contractor has a secure storage area for materials
Phase 4: Site Preparation (1 week)
What happens:
- The space is cleared and any existing fixtures are removed
- Utilities are disconnected or rerouted (if needed)
- Walls and floors are assessed for condition
- Any structural issues are identified
What you should do:
- Budget for any unexpected issues
- Keep the site secure and insured
Phase 5: Fitout and Construction (4–12 weeks)
What happens:
- This is the main build phase. The typical sequence is:
- Structural work (as needed) — walls, partitions, openings
- MEP rough-in — electrical, plumbing, HVAC first-fix
- Flooring — concrete prep, new flooring installation
- Wall finishes — plaster, paint, cladding, tiling
- Ceiling and lighting — ceiling installation, electrical second-fix
- Fixtures and fittings — shelving, counters, display units
- Kitchen installation (if applicable) — equipment, extraction, final connections
- Signage — interior and exterior signs
- Final touches — lighting, branding elements, furniture, cleaning
- Snagging — addressing any minor issues
- Equipment testing and commissioning
Timeline:
- Small projects (under 100 m²): typically 4–6 weeks
- Medium projects (100–200 m²): typically 8–10 weeks
- Large projects (over 200 m²): typically 10–12 weeks
What you should do:
- Minimise changes during fitout — they add cost and delay
- Visit the site regularly but don't interrupt work
- Address issues quickly — delays compound
- Keep communication open with the project manager
- Plan your opening date around this phase
- Have staff training scheduled for this period
- Prepare marketing and opening announcements
Phase 6: Inspection and Handover (1 week)
What happens:
- Final building regulation inspection
- Fire safety sign-off
- Electrical certification
- Health and safety compliance check (if applicable)
- Final walk-through and snagging list
- Handover of keys and documentation
What you should do:
- Attend the final walk-through
- Document any remaining issues
- Ensure all manuals and documentation are provided
- Get sign-off from all relevant authorities
How These Phases Interact
The phases above are sequential — each one depends on the previous being complete. Delays in design approval cascade through procurement and construction. Similarly, if planning permission is required, it typically adds 8–12 weeks (sometimes longer if the application is complex or planners request further information).
How to Reduce Your Timeline
1. Start Planning Early
Begin your project planning 6–12 months before your target opening date. This gives you time to secure a space, arrange financing, and plan carefully.
2. Make Decisions Quickly
The biggest cause of delays is slow decision-making. Have a clear vision upfront and be prepared to approve designs, finishes, and specifications quickly.
3. Choose an Experienced Contractor
An experienced contractor will anticipate issues, manage suppliers efficiently, and keep the project on track. They're worth the investment.
4. Use Standardised Designs
If you're opening multiple locations, use a standardised design template. This reduces design time and makes each project faster.
5. Order Long-Lead Items Early
Identify items with long lead times (custom joinery, specialist equipment, imported materials) and order them early — even before design is finalised.
6. Minimise Changes
Every change during fitout adds time and cost. Finalise your design before construction starts.
7. Manage Planning Permission Early
If planning permission is required, apply early and engage with the council. Don't wait until after design is done.
Common Timeline Delays
1. Slow Decision-Making
Problem: The client takes weeks to approve designs or choose finishes.
Solution: Set decision deadlines upfront and have a clear approval process.
2. Supplier Delays
Problem: Materials don't arrive on time, pushing back the entire schedule.
Solution: Order early, confirm delivery dates, and have backup suppliers.
3. Unexpected Structural Issues
Problem: Once work starts, you discover the building has structural problems (asbestos, weak foundations, etc.).
Solution: Budget for contingencies (typically 10–15% of project cost) and conduct a thorough site survey before starting.
4. Planning Permission Delays
Problem: The council asks for amendments or neighbours object, adding weeks to the timeline.
Solution: Engage with the council early, submit a strong application, and allow extra time for planning.
5. Contractor Availability
Problem: Your preferred contractor is busy and can't start when you need them.
Solution: Book your contractor early and confirm start dates in writing.
Next Steps
If you're planning a commercial fitout, here's what to do:
- Define your concept and budget — be clear about what you want
- Secure your space — don't start design until you have a lease
- Hire an experienced contractor — ask for references and timelines
- Plan for planning permission — check with your local council early
- Make decisions quickly — have a clear approval process
- Allow adequate time — don't rush the process
At Renovive, we help businesses plan and execute commercial fitouts on time and within budget. We manage every phase — from initial concept through to opening — and keep you informed every step of the way.
Ready to start your fitout project? Contact us for a free consultation and let's discuss your timeline and budget.
References
[1] Royal Institute of British Architects (RIBA) — Project Planning Guide: https://www.architecture.com [2] Chartered Institute of Building (CIOB) — Construction Management Best Practice: https://www.ciob.org [3] UK Building Regulations — Compliance and Timelines: https://www.gov.uk/building-regulations