There’s a particular optimism that exists when signing a retail lease.
You’ve found the space. The location works. The rent is just about manageable. And in your mind, the timeline is clear: eight weeks to fit out, maybe ten if things run slowly, and you’ll be open by early autumn.
Then the actual work begins. And what you thought would take two months stretches into four, then five. Not because of disaster or incompetence, but because retail fit-outs involve more decisions, more coordination, and more dependencies than most people anticipate.
This is an attempt to set realistic expectations. Not to discourage, but to help you plan properly-because the difference between a smooth opening and a chaotic one is usually just understanding what takes time and what doesn’t.
The Phases of a Retail Fit-Out
A retail fit-out in London typically moves through five distinct phases. Some overlap. Some can’t begin until others finish. And nearly all take longer than anticipated if you’re doing it for the first time.
Phase 1: Concept and Spatial Planning (2–4 weeks)
This is where the interior designer works with you to understand your brand, how customers will move through the space, and what the layout needs to support.
For a boutique retail space, this involves:
- Spatial planning (where the till goes, how stock is displayed, customer flow, back-of-house storage)
- Brand integration (how your visual identity translates into materials, fixtures, lighting)
- Understanding your operational needs (do you need a stockroom, a small kitchen for staff, space for deliveries?)
- Material and finish concepts (flooring, wall treatments, joinery, lighting)
What takes time: Getting this phase right requires iteration. The first layout rarely works perfectly. You’ll realise the changing room is too small, or the till blocks the window, or there’s no logical place for the staff area. Good designers anticipate these problems, but they still require thinking through.
What speeds it up: Having clarity about your brand, your budget, and your operational needs before you start. If you’re still deciding whether you want minimal Scandi vibes or maximalist vintage charm, this phase will take longer.
Typical duration: 2–4 weeks, depending on complexity and how decisive you are.
Phase 2: Technical Drawings and Specifications (2–3 weeks)
Once the concept is agreed, the designer produces detailed technical drawings that contractors can actually build from.
This includes:
- Floor plans with exact dimensions
- Electrical layouts (where every socket, switch, and light fitting goes)
- Joinery details (custom shelving, display units, till counter)
- Material specifications (exact tiles, paint colors, hardware)
- Lighting plans (ambient, task, accent lighting)
What takes time: This is precision work. A contractor can’t guess where you want plug sockets or how deep the shelving should be. Every detail needs to be drawn, specified, and checked.
If your space requires structural changes (moving walls, adding a mezzanine, reconfiguring plumbing), this phase also involves coordinating with structural engineers or architects, which adds time.
What speeds it up: Choosing materials and finishes quickly. If you spend three weeks debating tile samples, this phase stretches.
Typical duration: 2–3 weeks for straightforward fit-outs, 4–6 weeks if structural work is involved.
Phase 3: Approvals and Permissions (1–8 weeks)
This is the phase most first-time retailers underestimate.
Depending on your space and what you’re doing, you may need:
- Landlord approval (most commercial leases require the landlord to sign off on any alterations)
- Planning permission (if you’re changing the building’s use, altering the shop front, or adding signage)
- Building regulations approval (if you’re doing structural work, adding new plumbing, or altering fire safety)
- Licensing (if you’re serving food or alcohol)
What takes time: Council approvals can take 4–8 weeks. Landlord approvals depend on how responsive your landlord is (and whether their solicitor is on holiday). If your lease requires freeholder consent as well as landlord consent, add another few weeks.
What speeds it up: Starting this process early-ideally while technical drawings are being finalized. Some approvals can run in parallel with other work.
Typical duration: 1–8 weeks, depending on what permissions are needed.
Phase 4: Build and Fit-Out (4–8 weeks)
This is when contractors actually transform the space.
For a typical boutique retail fit-out (100–200 square meters), this involves:
- Stripping out existing fixtures (if it’s not a bare shell)
- Electrical and plumbing work (new circuits, lighting, sockets, any sink or bathroom additions)
- Building joinery (custom shelving, display units, till counter)
- Decorating (painting, flooring, wall finishes)
- Installing lighting and fixtures
- Fitting hardware (door handles, hooks, shelving brackets)
What takes time: Dependencies. Electricians can’t install light fittings until the ceiling is painted. Flooring can’t go down until walls are finished. Joinery can’t be fitted until electrical work is done. Everything has to happen in sequence.
Also: problems always emerge. The existing plumbing is in the wrong place. The walls aren’t straight. The floor isn’t level. A delivery is delayed. These aren’t disasters, but they add days.
What speeds it up
- Having a clear, detailed specification so contractors aren’t waiting for decisions
- Ordering long-lead items (custom joinery, specific tiles, lighting) early
- Good contractor coordination (a designer managing this process keeps things moving)
What slows it down
- Changing your mind midway through (the paint color you chose looks wrong, so you repaint)
- Discovering structural issues (damp, unsafe wiring, asbestos)
- Delayed deliveries (especially for custom or imported items)
Typical duration: 4–6 weeks for straightforward fit-outs, 6–8 weeks if significant joinery or structural work is involved.
Phase 5: Snagging, Styling, and Final Setup (1–2 weeks)
The build is finished, but the space isn’t ready to open yet.
This phase involves:
- Snagging (fixing minor issues — paint touch-ups, adjusting shelving, replacing a scratched tile)
- Installing signage and branding
- Setting up the till system and back-of-house operations
- Styling and merchandising (arranging stock, dressing displays)
- Final cleaning
- Staff training
What takes time: The small details. A shelf that isn’t quite level. A light switch in the wrong place. The till system that needs configuring. These aren’t big jobs, but they add up.
What speeds it up: Having a clear snagging list and addressing issues quickly rather than letting them pile up.
Typical duration: 1–2 weeks.
Total Timeline: Realistic Expectations
Straightforward retail fit-out (minimal structural work, no complex approvals):
12–16 weeks from concept to opening
Breakdown:
- Concept and planning: 3 weeks
- Technical drawings: 2 weeks
- Approvals: 2–3 weeks
- Build: 5 weeks
- Snagging and setup: 1 week
Complex retail fit-out (structural work, planning permission, custom joinery):
18–24 weeks from concept to opening
Breakdown:
- Concept and planning: 4 weeks
- Technical drawings: 4 weeks
- Approvals: 6–8 weeks
- Build: 7 weeks
- Snagging and setup: 2 weeks
What Actually Causes Delays
Most delays aren’t dramatic. They’re small inefficiencies that compound.
The most common causes:
- Indecision. Spending three weeks choosing between two paint colours adds three weeks to the timeline.
- Late approvals. Waiting for landlord sign-off while contractors are ready to start.
- Supply chain issues. Custom joinery that takes eight weeks to fabricate, not four.
- Scope creep. Deciding midway through that you want different flooring or an additional stockroom.
- Contractor coordination. Electricians and decorators not coordinating properly, so work has to be redone.
What rarely causes delays:
- The actual construction work (contractors know how long things take)
- Design decisions (if you have a good designer who plans properly)
How to Keep Your Fit-Out on Track
Make decisions early.
The biggest time-saver is decisiveness. Choose your materials, finishes, and fixtures early, and stick to them unless there’s a genuine problem.
Order long-lead items immediately.
Custom joinery, specific tiles, imported lighting – these can take 6–10 weeks. Order them as soon as the design is approved, even if the build hasn’t started yet.
Start approvals early.
Don’t wait for technical drawings to be finished before approaching your landlord or the council. Get the process moving in parallel.
Hire a designer who coordinates contractors.
A designer who manages the build process — liaising with electricians, joiners, decorators – keeps everything moving and prevents the gaps where nothing happens because everyone’s waiting for someone else.
Build in buffer time.
If you absolutely must open by a certain date (Christmas trading, a specific event), plan to finish two weeks early. Things always take slightly longer than planned.
Accept that some delays are inevitable.
A delivery gets held up. The council takes an extra week. The floor needs an additional coat. These aren’t failures – they’re just how building projects work.
When Faster Isn’t Better
There’s often pressure to compress the timeline – to open sooner, to save on rent for an empty space, to start trading before competitors.
But rushing a retail fit-out usually costs more than it saves.
A poorly planned layout that needs adjusting after opening. Joinery that looks hurried. Lighting that wasn’t thought through properly. These aren’t just aesthetic issues – they affect how customers experience the space and how efficiently you can operate.
A retail interior that’s done properly the first time, with considered decisions and quality execution, will serve you far better than one that’s rushed to meet an arbitrary deadline.
What This Means in Practice
If you’re planning to open a retail space in London, the realistic timeline from signing the lease to opening day is four to six months for a well-planned, professionally managed fit-out.
That’s not slow. It’s just what’s required to design thoughtfully, get approvals, build properly, and open with confidence rather than chaos.
Understanding this timeline doesn’t mean accepting delays. It means planning realistically, making decisions early, and working with people who know how to keep a project moving without cutting corners.
Because a retail space that opens two months later than hoped but works beautifully is always better than one that opens on time but doesn’t.
Every space begins with a vision. If you’d like to discuss yours, we’re here.
Kando Studio | London | email protected
