A Room-by-Room Construction Snagging Checklist

Snag in daylight where you can, and bring a few cheap tools that catch what your eyes miss — a torch raked along walls and ceilings to throw shadows across bumps and roller marks, a marble or spirit level for floors, a phone charger or socket tester for outlets, and a roll of low-tack tape or coloured dots to mark each snag in place. Work one room at a time and finish it completely before moving on. The most common reason a snag gets missed isn't that it was hard to see; it's that someone got distracted halfway through a room and never came back.

Inside each room, follow a fixed path so you cover every surface in the same order: floor, then walls, then ceiling, then doors and windows, then fixtures and services. Looking high and low matters — most people scan at eye level and never check the top of a door frame or the underside of a worktop. Test things, don't just look at them: open and close every door and window, run every tap, flush every toilet, switch every light, and open every cupboard. A surface can look perfect and still hide a defect that only shows up under load or use.

Record each snag the moment you find it, not at the end of the room. One snag, one photo, one clear location, one short note describing what's wrong and what "fixed" looks like. "Scratch on glass" is weak; "deep scratch, lower-right pane of the rear bedroom window, roughly 100mm long" is something a contractor can find and price without ringing you back. The discipline of capturing as you go is what turns a snagging walk into a defensible list rather than a fuzzy memory.

Start at the front door because it sets the tone for the build quality. Open and close it slowly and feel for binding, dragging on the threshold, or a gap where draughts get in. Check that the lock throws cleanly and the key turns without forcing, that the seal runs unbroken around the frame, and that the door sits flush rather than proud at one corner. Look at the threshold and the area just inside for water marks, which hint that rain is getting under the door. Repeat the same checks on any back or side doors.

In the hallway, rake your torch along the walls to catch filler shadows, roller lines, and patches where the paint sheen changes. Check skirting boards for gaps at the joints and where they meet the floor, and run a hand along them for proud nails or rough cuts. Floors should be level and quiet — walk slowly and listen for creaks, and look for lifting edges on boards or tiles, uneven grout lines, or a threshold strip that isn't fixed down. Light switches and the consumer unit usually live here, so test every switch and confirm the board is labelled and the cover sits flush.

Stairs are a safety item as much as a finish item, so treat them seriously. Every tread should be solid with no flex or creak, the nosings consistent, and the handrail fixed firmly enough that you can put real weight on it without movement. Check that balusters are evenly spaced and that the gaps between them are small enough that a child couldn't slip through — this is a common code requirement and a frequent snag. Look at the underside of the stairs and the wall string for cracks, and check that any carpet or finish runs neatly into each corner.

Kitchens carry the most components, so they generate the most snags. Open and close every cupboard and drawer and check the alignment of the doors — the gaps between them should be even and consistent, the runners smooth, and the soft-close mechanisms actually engaging. Look along the worktop for level, lippage at any joins, and a clean, unbroken silicone seal where it meets the wall and the splashback. Run your hand under the front edge of the worktop for rough cuts, and check around the sink cut-out and the hob for sealant gaps where water will eventually get in.

Test the services properly. Run the hot and cold taps and watch the pressure and the time the hot takes to arrive; fill the sink and let it drain to check for slow waste or leaks under the unit. Open the cupboard beneath the sink with a torch and look for damp, drips at the trap, and staining on the base panel. Check that the extractor runs and actually pulls air, that any integrated appliances are secured and powered, and that every socket above the worktop is live, level, and firmly fixed. Don't forget the obvious appliance gaps — a dishwasher space with no waste connection plumbed in is a classic late-stage snag.

In the utility or laundry area, confirm the washing machine and any dryer connections are present and correct — hot and cold feeds where needed, a waste standpipe at the right height, and a vent or condensate route for the dryer. Check the boiler or heat source if it lives here: look for a commissioning sticker, a pressure reading in the normal band, and no drips around the joints. As with the kitchen, open every cupboard, test every socket, and seal-check every junction between worktop, wall, and floor.

Water is the enemy in a bathroom, so most of the checklist here is about sealing and drainage. Run every tap and the shower, and watch the flow and the drainage — water should clear quickly without pooling around the waste. Fill the bath partway and check for movement or flex in the panel, then drain it and look underneath if you have access. Flush each toilet two or three times in a row to confirm it refills and the flush is strong, and feel around the base and the cistern connections for damp. A toilet that rocks slightly when you push it has not been fixed down properly.

Inspect every silicone and grout line as if it were the most important thing in the room, because for water resistance it is. The seal where the bath, basin, or shower tray meets the wall and floor should be continuous, smooth, and free of gaps, mould, or shrinkage. Tiles should be flat with even spacing and no lippage you can feel by dragging a fingertip across them; tap a few lightly and listen for the hollow note that means a tile isn't bedded fully. Check the shower screen or door for a clean seal and easy operation, and look at the floor fall in a wet room to confirm water actually runs to the drain rather than sitting in a corner.

Finish with ventilation and the small fittings. Switch on the extractor fan and confirm it runs and draws — a sheet of tissue held to the grille should be pulled flat. Check that the mirror, towel rails, and toilet-roll holder are fixed solidly into something, not just stuck to plasterboard, and that any heated towel rail or underfloor heating warms up when called. Look up at the ceiling above the shower for any staining or condensation marks that could point to a leak from above or poor ventilation.

These rooms are mostly about finish quality, and finish quality is where the torch earns its keep. Hold it close to the wall and rake the beam across the surface so it throws long shadows; that's how you find filler bumps, sanding scratches, roller stipple, and patches where two coats didn't meet. Check the corners and the line where wall meets ceiling for cracked or missing caulk, and look at the ceiling itself for the same defects plus any nail pops or taping lines in plasterboard. Note any paint that's thin enough to show the surface beneath, and any splashes on glass, sockets, or skirting.

Work the floor and the openings next. Walk the whole floor slowly, feeling for unevenness, soft spots, and creaks, and look for gaps at the skirting, scratches, and lifting edges. Open and close every window and internal door, checking that they don't bind, that the gaps around them are even, and that handles, locks, and trickle vents all work. On windows, look for scratches on the glass, broken or missing seals, condensation between double-glazed panes (a sign the unit has failed), and that any restrictors or child locks function. Test every socket and switch in the room, and confirm TV, data, and phone points are where the plan said they'd be.

Don't overlook the things that only matter once someone lives there. Check that radiators are level, secure, and heat evenly across their width without cold spots that suggest air in the system, and that each has a working valve. Open built-in wardrobes and storage to check shelving, hanging rails, and door alignment. Look behind doors and into the corners where finishing teams rush — the back of a swing, the top of a frame, the shadowed corner behind where furniture will go. Those are the spots a quick walk-through always misses and a checklist shouldn't.

Walk the outside of the building methodically, ideally after rain when leaks and pooling reveal themselves. Look up at the roof line for slipped or missing tiles, gaps at the ridge, and that flashing sits tight against walls and chimneys. Follow the gutters and downpipes and check they're fixed, clear, and discharging into a drain rather than onto a wall or path. Scan the external walls for cracks, render that sounds hollow when tapped, and staining beneath windows that points to a sealing failure. Check that ground levels slope away from the building and that air bricks and weep holes are clear.

Cover the external joinery and services on the same pass. External doors and window frames should be sealed all the way round with no gaps in the mastic, and the seals should be neat rather than smeared. Look at the meters, the external tap, any drainage gullies, and the manhole or inspection covers — lift one if you safely can and check it's clear and not full of building debris, which is a common cause of early blockages. Test external lighting and any sockets, and confirm that paths, driveways, and patios drain properly and have no trip hazards at the joints between surfaces.

Finally, snagging isn't only about what you can see — it's about what you can prove later. Collect and check the documentation handed over with the build: electrical certification, the gas or heat-source commissioning record, any warranty or guarantee paperwork, and the manuals for appliances and systems. Confirm that what's certified matches what's installed, and that serial numbers line up. A build can look immaculate and still be incomplete if the paperwork that protects you is missing, so treat the document review as a room on the checklist in its own right.

Working a checklist this thorough generates dozens of items fast, and that's exactly where most snagging falls apart — photos scattered across a phone, locations typed wrong, half the list forgotten by the time anyone chases it. SnagGrid is built to capture each snag in one pass as you move through the build. You snap a photo and drop a map pin, and the address auto-fills, so the location is right without typing. You add your rough notes — "cracked tile, hollow when tapped, by the window" — and AI drafts a clear, factual report from what you wrote. It never invents facts, and you approve every word before anything sends, so the report describes the snag you actually found and nothing more.

From there SnagGrid emails the report to the right recipient, logs every item to an audit trail, and gives you one-tap follow-up reminders so a snag can't quietly stall between "raised" and "fixed." A team dashboard with roles shows the whole list at a glance, per-category routing sends electrical, plumbing, and joinery items to the right people automatically, and you can export the list to CSV for records or hand it over with the build. There's a scoped REST API with webhooks if you want to wire snagging into your own systems, plus a public no-login report form with its own QR code so a site team or buyer can add snags without an account. Pricing is $29 per month per organization for one seat, plus $15 per month for each extra seat — so a snagging checklist stops being a pile of loose photos and becomes a record you can hand over and stand behind.