New Build Snagging Guide

Snagging is the process of identifying defects, unfinished work, and poor-quality finishes in a new-build property. Despite the high prices charged for new builds, it is extremely common for properties to be handed over with a range of issues, from minor cosmetic blemishes to more significant construction defects. A thorough snagging inspection helps ensure your new home is built to the standard you are paying for.

The term "snag" covers anything that is not built to the specification set out in the sales literature, does not meet the standards required by building regulations, or is simply poor workmanship. Common snags include badly applied paint, gaps in sealant, scratched surfaces, ill-fitting doors, uneven flooring, and incomplete external works. While many of these are cosmetic, some can indicate more serious underlying issues.

Ideally, you should carry out a snagging inspection before legal completion, while you still have maximum leverage over the developer. However, some developers resist pre- completion inspections and may only allow access after you have completed. Even if the developer does not allow a formal pre-completion inspection, you should have at least one pre-completion visit (sometimes called a "home demonstration" or "new home orientation") during which you can note obvious issues.

If you cannot inspect before completion, carry out your snagging inspection as soon as possible after moving in. You have the full two-year builder's warranty period to report defects, but it is far easier to get issues fixed when the developer's tradespeople are still on site and working on the development.

You can carry out a snagging inspection yourself or hire a professional snagging company. A professional inspection typically costs £300 to £600 depending on the size of the property, and the inspector will produce a detailed report with photographs that you can present to the developer.

Professional snagging inspectors know exactly what to look for and have the tools and experience to identify issues that a layperson might miss. They will check everything from floor levels and wall alignment to the operation of every window, door, socket, and tap. Their reports carry more weight with developers and can help resolve disputes if the developer is reluctant to fix issues.

If you prefer to do it yourself, allow at least three to four hours for a thorough inspection of a standard three-bedroom house. Bring a torch, a spirit level, a tape measure, a ladder (if needed), sticky notes or coloured tape to mark defects, and a notebook or phone for recording issues and taking photos.

Start your inspection outside the property. Walk around the entire exterior and check the following:

Brickwork and render: Look for cracked, chipped, or poorly pointed bricks. Check that the mortar joints are consistent and properly finished. Render should be smooth and free from cracks or bubbles. Check the damp-proof course (DPC) is visible and unobstructed — no soil, paving, or render should bridge above it.

Roof: Check for missing, cracked, or misaligned tiles or slates from ground level. Inspect the gutters and downpipes for proper alignment and check that they are securely fixed. Look for any signs of lead flashing around chimneys, vents, and where the roof meets walls.

Windows and doors: Check all external window and door frames for damage, scratches, and proper sealing. Open and close every window and door to check they operate smoothly. Check that locks and handles work correctly and that rubber seals are properly fitted.

Drainage and grounds: Check that paths, patios, and driveways slope away from the property to prevent water pooling against walls. Inspect manhole covers for proper seating and check that drainage grates are clear. If fencing, turf, or landscaping was included, check these are complete and properly installed.

Work through each room methodically, checking the following in every space:

Walls and ceilings: Look for cracks, dents, nail pops, uneven plaster, and poor paintwork. Pay particular attention to corners, edges, and around light fittings where finish quality often drops. Check that walls are plumb using a spirit level.

Floors: Walk across every floor, feeling for unevenness, squeaking, or bouncing. Check that skirting boards are straight, properly fitted, and sealed at joints. If hard flooring is fitted, check for scratches, chips, and proper alignment of tiles or planks.

Doors: Open and close every internal door. Check that they hang straight, close properly without sticking, and have properly fitted handles and hinges. Fire doors should have intumescent strips and close-fitting frames.

Windows: Open and close every window from inside. Check locks, handles, trickle vents, and weather seals. Look for scratches or marks on the glass and check that condensation channels drain properly.

Electrics: Test every socket with a socket tester (available for a few pounds from DIY stores). Check all light switches work, and inspect the consumer unit (fuse board) for proper labelling.

Open and close every cupboard door and drawer. Check alignment, that soft-close mechanisms work, and that handles are secure. Run every tap and check water pressure. Test the oven, hob, extractor fan, and any other fitted appliances. Check worktop joints for gaps and ensure the sealant between the worktop and the wall (and around the sink) is complete. Check that splashbacks are properly fitted and that tile grout is consistent.

Fill and drain each bath, sink, and shower tray. Check for leaks underneath and slow drainage. Run the shower and check water pressure and temperature consistency. Flush every toilet and check that the cistern refills correctly. Inspect all sealant around baths, showers, and basins — this is one of the most common areas for poor workmanship. Check that towel rails, toilet roll holders, and any other fittings are secure.

Turn on the central heating and check that every radiator heats up properly. Check the hot water system delivers consistent hot water to all taps. If the property has underfloor heating, test each zone. Locate and check the boiler, making sure it has been commissioned and that you have the operating manual and warranty documentation.

Check the ventilation system, including extractor fans in the kitchen and bathrooms and any whole-house mechanical ventilation with heat recovery (MVHR) system. These should be working and free from construction dust and debris.

Compile your snagging list in writing, with a clear description and photograph of each defect and its location. Number each item for easy reference. Submit the list to the developer's customer care team (or site manager if the development is still under construction) by email, keeping a copy for your records with proof of sending.

The developer should acknowledge your list and provide a timeline for addressing the issues. Minor cosmetic snags may be batched and fixed in a single visit, while more significant issues may require specialist tradespeople. Follow up regularly and keep records of all communications.