Snagging List Template: The Complete Checklist Before Your Builder Leaves
Your builder says the job is done. You want to believe them. But handing over final payment without a proper snagging inspection is one of the most expensive mistakes a homeowner can make.
A snagging list is your written record of every defect, unfinished item, and piece of work that doesn't meet the agreed standard. Your builder must fix everything on it before you pay them a penny more. Once that final payment leaves your account, your leverage is gone.
This guide walks you through exactly what to check, room by room, with a printable checklist you can use on the day.
What Is Snagging?
Snagging is the process of identifying defects and incomplete items in newly built or recently renovated work. The word comes from the construction industry and refers to anything that "snags" — catches your attention as wrong.
It's standard practice at the end of any building project, from new-build homes to single-storey extensions. No build is ever finished to perfection on the first pass. Paint misses. Grout is uneven. Doors don't hang true. Sockets are left untested. These are the snags.
A properly executed snagging process protects you because:
- The builder is contractually obliged to fix everything before final payment
- It creates a written record in case of future disputes
- It forces both parties to agree on what "finished" actually looks like
When to Do Your Snagging Inspection
Do it before final payment. This sounds obvious, but many homeowners feel pressure to "just get it done" and pay up. That's the moment your bargaining position evaporates.
The right time is when the builder says the work is complete and the site has been cleared. Not during the build — that's a different conversation. Not after you've paid — that's too late for leverage.
Tip: Do your snagging on a bright day with good natural light. Problems with plaster, paint, and grout are much harder to spot under artificial lighting. Morning light coming in at a low angle is particularly revealing for wall surfaces.
Book the inspection when you and your builder are both present. Go through everything together. Items you both agree are snags get written on the list and signed off by both parties, along with a realistic date by which each item will be fixed.
How to Handle the Snagging Process
Step 1: Prepare before you walk around
Pull out your original specification or scope of work. This is the document that says exactly what was agreed — materials, brands, dimensions, finishes. If something doesn't match what was specified, that's a snag regardless of whether it looks fine.
If you don't have a written specification (a common problem on smaller jobs), use your quotes, any emails or messages where finishes were discussed, and your own memory. Write down your expectations before you walk into the building.
Step 2: Walk through every room systematically
Don't try to spot snags at random. Use the checklist below and work through each room in a consistent order. You'll miss things if you're not systematic.
Take photographs of everything you record on the list — timestamp them. "The wall by the window has bubbling paint" with a photo is much harder to dispute than a verbal description.
Step 3: Test everything that can be tested
Open and close every door and window. Turn on every tap and flush every toilet. Flip every light switch. Test every socket with a phone charger. Run the shower. Check the heating. Test extractor fans. These are the things most likely to have been connected but not properly finished.
Step 4: Create the formal list
Write the snag list clearly: description of the issue, location, and a space for the agreed completion date. Both you and the builder sign it. Keep a copy each. This document is your agreement.
Step 5: Agree a retention or phased final payment
For significant snagging work, consider withholding a retention — typically 2.5–5% of the contract value — until all snags are resolved. This is standard practice on formal contracts. For smaller jobs, withhold the full final payment until everything is fixed and re-inspected.
Do not pay in full until all snags are fixed. Once you've paid, your practical leverage to get things done disappears. You'd then be in dispute territory, which is time-consuming and stressful.
The Snagging Checklist
Use this room-by-room checklist. Print it out and work through it methodically on the day of your inspection.
All Rooms — General
- Walls: check for cracks, bubbling, hollow spots, uneven plasterRun your hand across the wall surface to feel for ridges or hollows
- Paint finish: no runs, drips, misses, brush marks or roller stippleCheck in raking light (torch at an angle) to reveal surface imperfections
- Ceiling: level, no cracks, no sagging, clean paint finish
- Skirting boards: correctly fitted, mitred corners tight, caulked top and bottom
- Architrave (door frames): tight joins, no gaps at corners, caulked
- Coving / cornicing: continuous, no gaps, clean paint
- All light switches tested and working
- All sockets tested (use a phone charger or socket tester)
- Flooring: level, no creaks, no lifting edges, joints tight
- Flooring: transitions between different floor types smooth and flush
- Every internal door opens, closes and latches properly
- Door handles, hinges and locks work correctly and are tight
- No debris, dust or construction waste left
Kitchen
- All cupboard doors aligned, open smoothly and close flush
- Drawers open and close smoothly, soft-close working
- Worktop joints tight and sealed, no exposed chipboard
- Upstand or tiling properly sealed at worktop junction
- Sink: secure, no movement, no leaks under sink
- Taps work, no drips, hot/cold correctly labelled
- Waste runs freely, no slow drainage
- Extractor fan works and vents externally (not just recirculates) if specified
- Splashback tiles: evenly spaced, grout consistent, no cracked tiles
- Integrated appliances fitted correctly and working
- Plinth fitted and level
- Silicone bead around sink, bath edge and worktop wall junction: neat, no gaps
Bathrooms & WCs
- Tiling: straight lines, consistent grout width, no cracked or hollow tilesTap each tile — a hollow sound means it isn't fully bonded
- Grout: consistent colour and depth, no cracks or gaps at junctions
- Silicone at internal tile corners, floor-wall junction, and around all fittings
- Bath or shower tray: secure, no movement, sealed correctly
- Shower: all heads and valves working, correct pressure
- Shower screen or enclosure: door seals correctly, no water escapes
- WC: flushes correctly, cistern fills properly, no running water sound
- WC: secure to floor, no movement, properly sealed at base
- Basin: secure, taps working, waste drains correctly
- Under-basin area: no leaks, pipework neat and clipped
- Extractor fan installed and working if room has no openable window
- Heated towel rail: working, properly bled (no air in system)
- Bathroom accessories (toilet roll holder, towel hooks): secure
Extension / New Build Space
- Structural walls: no visible cracking at junctions with existing building
- Bifold / sliding doors: all panels open, close and lock correctlyTest in both fully open and intermediate positions
- Bifold / sliding doors: weather seals correctly engaged when closed
- Roof: no visible daylight from inside, no water stains after rain
- Flat roof / lantern: flashing correctly fitted and sealed
- Insulation: correct type and thickness confirmed by building control sign-off
- Underfloor heating (if fitted): zones work, thermostat responsive
- Connection between old and new floor levels: flush, no trip hazard
- Connection between old and new ceilings: smooth plasterwork transition
- Rooflights (if fitted): open, close and lock, seals intact
Exterior & Garden
- External brickwork or render: consistent appearance, no cracks, no staining
- DPC (damp proof course): correctly positioned at least 150mm above finished ground level
- External window sills: correctly sloped away from building, sealed at wall junction
- All external windows open, close and lock correctly
- External doors: threshold weather sealed, locks work, no draught
- Gutters and downpipes connected, running to drain, no sagging
- Drainage: check all new gullies and inspection chambers are accessible
- Garden: turf or paving reinstated where disturbed
- Temporary fencing, skips and site materials removed
- Any boundary fencing or walls disturbed during work reinstated
Services & Utilities
- Consumer unit / fuse board: labelled correctly, no uncovered positions
- RCDs tested and tripping correctly
- Electrical installation certificate (EIC) provided by electrician
- Gas work: Gas Safe certificate provided if any gas work done
- Boiler / heating: all radiators heating evenly, no cold spots
- Hot water: adequate pressure and temperature at all outlets
- Water pressure throughout acceptable
- Any soil pipes correctly lagged if running through unheated space
- All pipe runs and cable chases correctly made good after installation
Documentation to Collect
- Building regulations completion certificate from local authority
- Electrical Installation Certificate (Part P)
- Gas Safe certificate for any gas work
- FENSA or CERTASS certificate for replacement windows / doors
- Warranties for boiler, windows, roof, structural warranty if applicable
- Operating and maintenance instructions for all appliances
- Any planning permission documents, approved plans and planning conditions
- Signed snagging list agreed with builder (with rectification dates)
- Final invoice marked as paid once all snags are resolved
After the Snagging Inspection
Once you've walked through everything:
- Compile the list formally. Write up all items clearly. Description, location, agreed fix, and target date. Both parties sign it.
- Agree the retention. Withhold a proportionate amount of the final payment until all items are resolved. For a major snag list (20+ items), withhold the full final payment. For minor items only, a retention of 2.5–5% may be appropriate.
- Photograph everything. Before the builder comes back to fix items, re-photograph all snags. This documents the before state.
- Re-inspect when fixed. Don't just take their word for it. Walk through again for each batch of fixes, check each item against the list, and mark it as resolved only when you're satisfied.
- Release payment in stages. Pay for completed snag fixes progressively if it's a long list. Keep the final portion until the last item is resolved and you have all documentation.
The most common mistake: Paying in full because the builder says "we'll come back and fix the snags." They almost never do with the same urgency once they've been paid. The snagging list is only a bargaining tool while money is outstanding.
What if the Builder Refuses to Fix Snags?
If a builder refuses to address legitimate defects, you have several options:
1. Formal written notice
Send a letter by recorded post listing the snags, confirming they were agreed, and giving a 14-day deadline to fix them. Keep a copy. This starts the paper trail.
2. Deduct from outstanding payment
If there's any money still to be paid, deduct the reasonable cost of getting the work done by someone else. Write to the builder confirming this and why. Don't just disappear — document it.
3. Get quotes for remedial work
Obtain two or three quotes from other tradespeople for fixing the defects. This gives you a documented, reasonable cost to claim back.
4. Small claims court
For amounts under £10,000 in England and Wales (£5,000 in Scotland), the small claims court is straightforward to use without a lawyer. Your signed snagging list and photographic evidence are powerful documentation.
Track every snag in Ted
Use Ted's task feature to log every snag with photos, assign it to your builder, and track when it's resolved. Your complete record is always in one place.
How Many Snags Is Normal?
More than you'd expect. On a typical house extension, a thorough snagging inspection will usually find 20–50 items — a mix of minor (paint misses, silicone gaps) and moderate (doors not hanging straight, tiles hollow). That doesn't mean the work is bad; it means building is inherently imperfect and snagging is the mechanism for catching and fixing those imperfections.
On a new-build house, professional snagging inspectors routinely find 100–200 items. The inspection exists precisely because this is normal.
A short snag list (fewer than 10 items on a large project) often means the snagging wasn't thorough enough rather than the build being flawless.
Summary: The Snagging Golden Rules
- Do it before final payment. Once they're paid, they're gone.
- Do it in good natural light. Morning is best.
- Test everything that moves, flows or lights up.
- Compare against the original specification — not against "good enough."
- Photograph everything.
- Get it signed by both parties.
- Retain payment until every item is resolved.
- Collect all certificates and documentation before releasing final payment.
Build your complete project record
Ted gives you a timeline of every payment, every task completed, and every note from start to finish. The complete record that protects you throughout your build — and at snagging time.
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