What Is a Snagging List — And How Do You Use One? Primary keyword: snagging list new build London URL slug: /blog/snagging-list-new-build-london Word count: approx 930
What Is a Snagging List — And How Do You Use One?
Whether you're taking possession of a new build home, a completed extension, or a freshly refurbished property, the snagging process is one of the most important steps between the end of construction and the start of your enjoyment of the space. And yet it's one that many homeowners either skip or don't fully understand.
This guide explains what a snagging list is, how to use one effectively, what to look for room by room, and how a structured snagging process protects both you and your contractor.
What Is Snagging?
Snagging is the process of identifying defects, incomplete work, or items that fall short of the agreed specification at or before practical completion — the point at which a building is considered sufficiently finished for occupation, but before the final account is settled and retention is released.
The term comes from the construction industry and refers to the minor (and sometimes not-so-minor) issues that must be rectified before a project is formally handed over. Snags can range from a paint chip on a door frame or a poorly fitted window seal to a squeaky floorboard or a bathroom tap that drips.
A snagging list is the documented record of all these items — typically a numbered list with descriptions, locations, and photographs — that the contractor is required to remedy before final sign-off.
When Should Snagging Take Place?
Snagging should take place before you formally accept the completed works and before any final payments or retention releases are made. Once you have signed off the works and moved in, your leverage to have defects remedied diminishes significantly.
In practice, a good principal contractor will carry out their own internal snagging before presenting the property to you — addressing the most obvious issues before the client handover inspection. The client inspection then acts as a final independent check.
Do not rush this stage. Take your time, visit in good daylight, and work through every room methodically.
What to Check: A Room-by-Room Guide
A thorough snagging inspection should cover the following:
Doors and windows: Do all doors and windows open, close, and lock properly? Look for gaps in seals, scratched glass, damaged ironmongery, and poor paint finishes around frames.
Flooring: Check for uneven joins, lifting edges, squeaks, and areas where adhesive has failed. Tile grout should be consistent in colour and completely cured.
Walls and ceilings: Look for visible cracks (particularly around new openings), uneven plaster, poorly finished corners, and inconsistent paint coverage. A torch held at a low angle picks up surface imperfections that are otherwise invisible.
Electrical: Check that all sockets, switches, and light fittings are correctly installed and working. Look for missing faceplates, misaligned boxes, or lights that don't function.
Plumbing and heating: Run all taps and showers. Check under sinks for leaks. Test radiators or underfloor heating systems. Confirm that stop valves are accessible and labelled.
Kitchen and bathrooms: Inspect worktop joints, door alignment, drawer runners, sealant lines, and tile grout. Check that appliances are connected and operational where they form part of the contracted scope.
Joinery and carpentry: Check that skirting boards, architraves, and window boards are correctly fitted and painted. Look for gaps, splits, or areas where filler hasn't been finished properly.
External works: Check drainage gullies, any external render or cladding, roof abutments, and new fencing or paving where applicable.
Professional Snagging vs Self-Snagging
Self-snagging — working through the property yourself — is entirely reasonable for smaller refurbishment or extension projects, provided you are thorough, methodical, and put everything in writing before any final payment is made.
For larger new build homes, some buyers instruct a professional snagging surveyor: an independent specialist who carries out a detailed inspection using calibrated equipment. Professional snagging reports can identify issues that are difficult for a layperson to detect, particularly relating to insulation continuity, thermal performance, structural tolerances, and M&E installations.
New Builds: NHBC Buildmark Warranty Protection
If you're purchasing a new build home covered by an NHBC Buildmark warranty, you benefit from additional statutory protection. The Buildmark warranty includes a two-year builder warranty period during which the developer is obliged to remedy defects arising from failure to build to the NHBC's Technical Standards. After this two-year period, the NHBC's own structural warranty covers major structural defects for a total of ten years from legal completion.
Even with an NHBC warranty in place, a thorough snagging inspection before legal completion remains important — it establishes the condition of the property at handover and creates a clear documented basis for claiming remediation under the developer's obligation.
How RCB Design & Build Handles Snagging
At RCB Design & Build, snagging is a formal stage of our delivery process — not an afterthought. Our project managers carry out a pre-handover internal inspection before presenting the property to the client. The client then conducts their own inspection, and any items identified are recorded on a formal, numbered snag list document.
Contractor obligations to remedy snagged items are built into our programme and commercial structure: snags must be resolved before retention is released. This gives both parties a clear, contractually protected mechanism for achieving a finished result that meets the agreed specification.
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