New Build Snagging Explained: The Complete UK Guide

New build snagging is the process of going through a brand-new home and noting down everything that has not been finished properly, so the developer can put it right. A "snag" is any defect or unfinished bit of work: a scuffed skirting board, a door that does not close cleanly, a radiator that will not heat up, a tile that is cracked, a window that sticks. Snagging is simply finding those problems, recording them clearly, and reporting them to the people responsible for fixing them. This guide walks through the whole thing in plain English for UK buyers: what snagging is, when it happens, what to look for, who pays, how your warranty fits in, and how to log snags so they actually get sorted.

It is worth saying up front: a brand-new home is not the same as a perfect home. Houses are built fast, by lots of different trades, often in poor weather, and almost every new build has snags. That is normal. Snagging is not about being difficult - it is about getting the home you paid for finished to the standard you were promised.

What is new build snagging?

Snagging is the inspection and reporting process that catches the small (and occasionally not-so-small) faults in a newly built property. The list of issues you produce is usually called a "snagging list" or "snag list".

Snags tend to fall into a few buckets:

• Cosmetic - scuffs, paint splashes, chipped tiles, marked worktops, poor caulking and filler, uneven paintwork.
• Functional - doors and windows that stick or do not seal, taps that drip, sockets that do not work, heating or hot water faults, extractor fans that do nothing.
• Fit and finish - gaps around skirting and architrave, badly hung doors, cupboards that are not level, missing trim or seals.
• Bigger build issues - leaks, damp, poor insulation, drainage problems, or anything that hints at a structural fault. These are rarer but more important.

The point of snagging is to separate "this needs fixing" from "this is just how a lived-in home behaves", and to put the first list in front of your developer in a form they cannot easily wave away.

Why snagging matters

Two reasons, really.

First, money and hassle. The faults in a new home are the developer's responsibility to fix, not yours - but only if you report them properly and within the right window. Miss the window, or fail to evidence the problem, and you can end up paying to fix something that was never your fault.

Second, leverage. Once you have moved in and the developer has been paid, your strongest bit of leverage is gone. A clear, dated, well-documented snagging list - ideally raised early - is what keeps the pressure on. Developers deal with a lot of buyers, and the ones with vague verbal complaints get deprioritised. The ones with a tidy written list of evidence get sorted.

For a fuller picture of where you stand legally, see our guide to your new build rights.

When does snagging happen? The timeline

Snagging is tied to a few key moments in the buying process. Every developer runs things slightly differently, so treat this as the typical shape rather than a fixed rulebook.

Reservation and build

You reserve the property, often off-plan or part-built. There is nothing to snag yet, but this is when you should start reading the paperwork - the reservation agreement, and any consumer code or warranty information - so you understand your rights before completion.

Pre-completion inspection (the home tour)

Many developers offer a "home tour", "home demonstration" or pre-completion inspection (PCI) shortly before you legally complete. This is your chance to walk the property before you own it. If your developer is signed up to the New Homes Quality Code, they are obliged to let you (or a professional acting for you) carry out a pre-completion inspection before handover.

A pre-completion inspection is the strongest moment to snag, because defects logged while the home is still being handed over are harder for the developer to deprioritise. A professional pre-completion survey is usually booked one to two weeks before your legal completion date.

Completion and handover

You complete, get the keys, and the home is yours. If you did not snag before completion, this is the moment to start - ideally in the first days, while everything is fresh and you can clearly separate build defects from any marks you make moving in.

The early reporting window

Many developers follow an early-reporting convention - the NHBC, for example, references reporting cosmetic snags (paint nicks, marks, minor finish issues) within the first few days of getting your keys. The exact period varies by builder; some say seven days, some say less. This is not a hard legal deadline for all defects, but cosmetic items in particular are easier to get fixed if you flag them quickly, before there is any argument about who caused the mark.

For a deeper look at deadlines and responsibility, read the snagging period explained.

What to look for when you snag

Every home is different, so there is no universal checklist that catches everything - the specific defects in your home depend on who built it, how, and in what conditions. Rather than a room-by-room tick sheet, it helps to snag with a consistent method and a few principles in mind.

Work room by room, in a logical order, and in good light. For each room, look at:

• Walls and ceilings - cracks, uneven plaster, paint coverage, marks, nail pops.
• Floors - level, squeaks, lifting boards, scratched or cracked tiles, gaps at the edges.
• Doors and windows - do they open, close, lock and seal cleanly? Any draughts, sticking, or misalignment?
• Joinery and trim - skirting, architrave, stairs and handrails: gaps, poor fit, rough finish.
• Sockets, switches and lights - test that everything actually works.
• Kitchen and bathrooms - units level and secure, sealant neat, taps and shower running, no leaks under sinks, tiling even.
• Heating and hot water - every radiator heats up, the boiler and thermostat work, hot water runs.
• Outside - render and brickwork, guttering, drainage, paths, fences, and any external doors.

Take your time. A thorough self-snag of an average home can take a few hours. Open everything, run everything, and look closely - the snags that get missed are usually the ones nobody bothered to test.

Who is responsible for fixing snags?

In almost all cases, the answer is the developer who built the home. Snags are defects in their work, and putting them right is their responsibility, at no cost to you, provided you report them within the relevant period.

You do not pay tradespeople to fix new build snags. You do not claim on your own home insurance. You report the snags to the developer, and they arrange the repairs. If they drag their feet, the job is to keep the pressure on with clear, documented communication - not to start fixing things yourself (which can muddy who was responsible).

If your developer is not responding, there is a proper escalation path, which we cover in how to get your developer to fix your snags. The short version: keep everything in writing, follow the developer's formal complaints process, and escalate to your warranty provider or the New Homes Ombudsman if needed.

How warranties and codes fit in

This is the part most buyers find confusing, so here is the plain-English version.

The new home warranty

Most new homes in the UK come with a 10-year warranty - the best known is NHBC Buildmark, which covers a large share of new builds, though there are other providers. These warranties are generally structured in two phases:

• Years 1-2 (the builder period) - the developer is responsible for putting right defects that fall short of the warranty provider's standards. This is the period most ordinary snags fall into. The builder, not the warranty provider, does the fixing.
• Years 3-10 (the structural period) - cover shifts to the warranty provider and narrows to major structural problems - things like load-bearing walls, foundations, the roof structure and so on. Everyday cosmetic snags are not covered this far out.

So when people say a new build has a "two-year warranty" and a "ten-year warranty", both are true - they are describing the two phases of the same cover. The first two years are where snagging lives.

The New Homes Quality Code and the New Homes Ombudsman

Alongside the warranty, there is a consumer-protection framework. The New Homes Quality Code sets standards for how developers should treat buyers - including handover, the right to a pre-completion inspection, and how complaints are handled. The New Homes Ombudsman Service (NHOS) is the free, independent body that buyers can escalate to if a registered developer does not resolve a complaint through its own process.

In broad terms: you raise the issue with your developer first and give them a fair chance to put it right. If you are not satisfied with their response - or they fail to respond in time - you can take the complaint to the Ombudsman. Whether this route is open to you depends on whether your developer is registered with the scheme, so check which code and warranty apply to your purchase.

DIY snagging vs a professional survey

You have two honest options, and the right one depends on your budget, your confidence, and the home.

Do it yourself. Free, and perfectly doable for most cosmetic and functional snags if you are methodical and patient. You know your home, you can take your time, and a well-documented DIY list is taken seriously - especially if it is properly evidenced with photos, dates and locations.

Hire a professional snagging surveyor. Typically costs somewhere in the region of a few hundred pounds (commonly around £300-£600 depending on property size and location). A professional brings experience, will often spot issues a homeowner would miss (insulation gaps, drainage, technical compliance), and produces a formal report that some buyers feel carries more weight with a developer.

Neither is "right". A pro survey is money well spent on a larger or more complex property, or if you simply do not have the time or confidence. For a smaller home, a careful DIY snag with good documentation does the job for nothing. The thing that matters most is not who does the snagging - it is how well the snags are recorded.

We weigh this up properly, including realistic costs, in DIY vs a professional snagging survey.

How to log and report snags effectively

Whether you snag yourself or use a surveyor, the quality of the report decides whether snags get fixed quickly or get argued over. A good snag record has four things:

1. A clear description - what is wrong, in plain terms. "Deep scratch across the kitchen worktop near the sink", not "worktop damaged".
2. A photo (or two) - one showing the defect close up, one showing where it is in the room. Photos are your evidence.
3. A location - which room, and ideally where in the room. Pinning the snag to a floor plan removes all doubt.
4. A date - when you found it. This is what protects you if there is ever a dispute about whether a mark was there at handover or caused later.

Group your snags by room, number them, and put the whole thing in a single document you can send to the developer - a PDF is the standard. Keep a copy for yourself, and send it in a way that creates a record (email, or the developer's portal), not a phone call you cannot later prove.

For the full method, see how to document snags.

What happens after you submit your snag list

Once your developer has the list, the process usually runs like this:

1. Acknowledgement - the developer confirms they have received it. If they do not, chase in writing.
2. Triage - they prioritise. Safety issues (electrical faults, leaks) should jump the queue; cosmetic items get scheduled in.
3. Scheduling - they book trades to come and fix the items, often in batches. This can take a few visits.
4. Repairs and sign-off - the work is done. Check each fixed item yourself before you consider it closed, and keep your list updated. It is common for a fix to be partial or to create a new snag.
5. Follow-up - anything not resolved goes back on the list. Persistent or ignored snags move into the developer's formal complaints process, and then potentially to the warranty provider or Ombudsman.

Expect this to take weeks rather than days, and to need a bit of polite persistence. Keep your documentation current, log every interaction, and do not sign anything off until you are genuinely happy with it.

Frequently asked questions

Is snagging really necessary on a brand-new home?

Yes. Almost every new build has snags - they are a normal consequence of how homes are built. Snagging is how you make sure the defects get fixed by the developer rather than becoming your problem later.

How long do I have to report snags?

It depends on the type of snag and your warranty. Cosmetic snags are easiest to get fixed if reported within the first days of moving in. Functional and build defects are generally covered for the first two years under the builder period of your warranty. Always check your own warranty documents for the exact terms.

Do I have to pay to fix snags?

No. Snags are the developer's responsibility to fix at no cost to you, provided you report them within the relevant period. You should not be paying tradespeople or claiming on your own insurance for genuine new build defects.

Can I do my own snagging instead of paying for a survey?

Absolutely. A careful, well-documented DIY snag is free and is taken seriously, especially with clear photos, dates and locations. A professional survey adds expertise and a formal report, which can be worth it on larger or more complex homes. See DIY vs a professional snagging survey for the full comparison.

What if my developer ignores my snag list?

Keep everything in writing and follow the developer's formal complaints process. If that does not resolve it, you can escalate to your warranty provider or, where the developer is registered, the New Homes Ombudsman. Good documentation is what makes escalation work - read how to document snags and your new build rights.

The bottom line

New build snagging is straightforward when you break it down: walk the home methodically, record every defect clearly with a photo, location and date, send a tidy list to your developer, and keep polite pressure on until each item is fixed. Your warranty covers you, the developer pays, and the law is on your side - but only if you snag properly and report it well.

If you are buying or have just moved into a new build, the buyer-focused walkthrough at for new build buyers ties all of this together. And when you are ready to start your list, SnagPal is a free, offline, no-account iOS app that turns your photos and notes into a developer-ready PDF in minutes.