Snagging, Warranties and Defects: Who Pays After Completion?

Completion can feel like the finish line.

The purchase price has been paid.

The keys have been released.

The apartment is finally yours.

But for a new-build property investor, one important part of the transaction may only just be beginning:

What happens when something is wrong with the property?

Perhaps a door does not close properly.

There is damaged flooring.

A socket does not work.

Water begins appearing around a window.

Or, several years later, a much more serious issue develops with the structure of the building.

Who pays?

The developer?

The warranty provider?

The freeholder?

The management company?

Or the property owner?

The answer depends on what the problem is, when it appears, where it is located and — most importantly — what the contracts, lease and warranty actually say.

That is why investors should understand snagging, warranties and defects before completion, rather than discovering the process when something goes wrong.

Start With the Difference Between a Snag and a Defect

The terms are often used interchangeably, but they can describe very different problems.

A snag is generally a relatively minor issue with the finish or completion of a new property.

Examples might include:

• poor paintwork;
• chipped tiles;
• misaligned doors;
• damaged kitchen units;
• loose fittings;
• sealant problems;
• incomplete finishes; or
• sockets and switches that do not work correctly.

A more significant defect may involve the way part of the property was designed, constructed or installed.

Examples could include:

• persistent water penetration;
• incorrectly installed windows;
• plumbing faults;
• serious electrical issues;
• defective roofing;
• problems with structural elements; or
• other construction failures.

The distinction matters because different protections may apply.

A cosmetic snag identified shortly after completion is not necessarily treated in the same way as structural damage appearing six years later.

The Best Time to Find Problems Is Before Completion

For investors buying off-plan, the temptation is to concentrate on the completion statement, mortgage funds and handover date.

The physical property deserves the same attention.

Where the purchase arrangements permit it, a pre-completion inspection or professional snagging survey can help identify unfinished, defective or damaged work before the property begins operating as a rental investment.

A snagging inspection could examine items such as:

• walls and ceilings;
• flooring;
• doors;
• windows;
• kitchen units;
• sanitaryware;
• electrical fittings;
• plumbing;
• heating controls;
• balconies;
• fixtures and fittings; and
• visible workmanship.

Photographs should ideally be taken and issues recorded in writing.

This creates something extremely valuable:

evidence of the property’s condition at handover.

That evidence can make later conversations considerably clearer.

It also fits into the wider due-diligence process discussed in Residence Index UK’s guide to developer due diligence and the documents investors rarely request.

What Usually Happens During the First Two Years?

Many mainstream new-build warranty structures separate the post-completion period into two stages.

For example, NHBC’s Buildmark protection normally includes a builder warranty period during the first two years following legal completion, followed by a further insurance period covering specified defects and damage. Read NHBC’s explanation of Buildmark protection.

During the initial builder warranty period, qualifying defects are generally raised with the builder or developer.

That could potentially include problems with:

• workmanship;
• plumbing;
• electrics;
• windows;
• fixtures;
• finishes; or
• other elements that do not meet the relevant warranty standards.

But investors should never assume that every problem automatically qualifies.

The policy wording matters.

So does the nature of the issue.

Wear and tear, damage caused by occupants, inadequate maintenance or matters outside the warranty specification may be treated differently.

A “10-Year Warranty” Does Not Mean Everything Is Covered for Ten Years

This is one of the easiest phrases in new-build property to misunderstand.

A development brochure might state:

“10-year new-build warranty.”

That sounds reassuring.

But it does not normally mean the developer is responsible for repairing every fault for ten years.

Using NHBC Buildmark as an example, the builder warranty generally operates during the first two years. The subsequent insurance period can provide protection against damage resulting from specified defects in particular parts of the property. NHBC explains its years 3–10 cover here.

The scope is therefore narrower than many investors initially assume.

Other warranty providers may have different terms.

Before purchasing, establish:

• Who is the warranty provider?
• When does the policy begin?
• When does it expire?
• What is covered during years one and two?
• What changes after that?
• What exclusions apply?
• Are minimum claim values applicable?
• Who is entitled to make a claim?
• Are common parts covered?
• Does the warranty transfer to a future buyer?

The phrase “10-year warranty” should begin the due-diligence conversation, not end it.

Who Pays for a Defect Inside the Apartment?

Suppose a fault appears inside your flat shortly after completion.

The first question is whether it relates to defective construction or something that happened afterwards.

If the issue arose because the developer’s contractor installed something incorrectly and it falls within the applicable warranty arrangements, responsibility may sit with the developer during the initial defects period.

However, if the damage results from:

• tenant misuse;
• accidental damage;
• normal wear and tear;
• inadequate maintenance; or
• alterations carried out after completion,

the owner may ultimately be responsible.

The difficulty is sometimes proving which category applies.

This is another reason photographs, inspection reports and written communication should be retained from completion onwards.

What About Appliances?

Appliances create another layer.

A developer may supply:

• ovens;
• hobs;
• refrigerators;
• dishwashers;
• washing machines; or
• other equipment.

But those appliances may have their own manufacturer warranties.

The relevant route could therefore be the developer, manufacturer, retailer or warranty provider depending on the problem and documentation.

Investors should keep:

• appliance model numbers;
• serial numbers;
• warranty certificates;
• operating manuals;
• invoices where available; and
• handover documentation.

For a professionally managed investment, make sure the property manager also knows where this information is stored.

What If the Problem Is in a Communal Area?

Apartments become more complicated when the defect is not inside the flat.

Imagine the problem involves:

• the roof;
• external façade;
• communal heating;
• lifts;
• corridors;
• shared drainage;
• entrance systems; or
• other common parts.

For a leasehold flat, the lease will normally determine responsibility for maintaining different parts of the building.

The Leasehold Advisory Service explains that the freeholder will commonly be responsible for structural and communal elements including roofs, external walls and shared areas, although individual lease terms must always be checked. See LEASE guidance on repairs and maintenance.

That does not necessarily mean the freeholder personally absorbs the cost.

Ordinary repair and maintenance expenditure can potentially be recovered from leaseholders through service charges where the lease permits it.

This distinction is extremely important.

Who arranges the repair and who ultimately funds it are not always the same party.

Should Leaseholders Pay for a Construction Defect?

Ideally, a genuine construction defect covered by a developer obligation or building warranty should be pursued through that route rather than simply treated as routine service-charge expenditure.

But reality can become complicated.

Questions can arise around:

• whether the issue meets the warranty definition of a defect;
• whether the warranty has expired;
• whether exclusions apply;
• whether the defect affects the individual unit or common parts;
• who has authority to submit the claim;
• whether the freeholder or managing agent has pursued the developer; and
• whether the remedial cost is fully recoverable.

For investors buying apartments, this is why service-charge due diligence and warranty due diligence should be considered together.

Our guide to reading a service-charge budget before buying explains why communal building costs deserve examination before acquisition.

The Management Company Can Become Crucial

A good property manager does more than collect rent.

When a defect is reported by a tenant, somebody needs to establish whether it is:

1. a tenant issue;
2. normal landlord maintenance;
3. a developer defect;
4. a warranty matter; or
5. a building-management issue.

If everything is automatically sent to a contractor and charged to the owner, an investor could end up paying for work that another party should have addressed.

Your management arrangement should therefore make clear:

• how defects are reported;
• who contacts the developer;
• who manages warranty claims;
• whether contractors can be instructed without approval;
• what emergency spending authority exists; and
• what records are retained.

This is one reason we argue that investors should examine what a property management agreement can quietly do to returns.

Poor defect management can become an investment cost.

Do Consumer Protection Codes Help?

Potentially — but investors need to check eligibility carefully.

Consumer schemes can provide important additional protections for qualifying new-home buyers.

For example, the Consumer Code for Home Builders includes requirements around after-sales service and dealing with qualifying snags and defective work during the first two years following legal completion. See the Consumer Code requirements.

The New Homes Quality Code also requires registered developers to provide an after-sales service for qualifying customers and provides access to the New Homes Ombudsman Service in eligible cases. Read the New Homes Quality Board’s after-sales guidance.

However, investors should not assume these consumer protections automatically apply to every investment purchase.

The Consumer Code specifically contains exclusions covering certain corporate purchasers and people acting in the course of business when buying homes for investment purposes. Check who is covered by the Consumer Code.

This distinction matters enormously for buy-to-let purchasers.

The property warranty and the consumer redress scheme are not necessarily the same protection.

Ask your solicitor to establish exactly what applies to your transaction.

Keep an Evidence File After Completion

The evidence file should not stop when you exchange contracts.

Our guide to building a property investment evidence file before reserving explains the value of keeping the documents supporting an investment decision.

After completion, add:

• the snagging report;
• completion photographs;
• warranty certificate;
• policy wording;
• building-control documentation;
• appliance warranties;
• handover documents;
• developer contact details;
• defect reports;
• emails with the developer;
• repair invoices;
• property-management correspondence; and
• evidence showing when problems first appeared.

If a defect becomes disputed years later, this paperwork can be far more useful than relying on memory.

A Simple Post-Completion Defect Process

When something goes wrong, avoid immediately asking:

“How much will this cost me?”

First determine responsibility.

A practical process is:

Document the issue.
Take photographs and videos and record when the problem was identified.

Prevent additional damage.
Urgent action may be required if there is water penetration, an electrical hazard or another safety issue.

Check the warranty.
Identify the provider, policy period and relevant section.

Check the lease.
For apartments, establish whether the affected area sits within the owner’s demise or the building’s common parts.

Contact the correct party in writing.
That could be the developer, managing agent, freeholder, warranty provider or insurer.

Keep a timeline.
Record dates, responses, inspections and promised remedial works.

Do not assume responsibility too quickly.
A repair invoice does not automatically mean the property owner should bear the final cost.

Defects Should Be Part of the Investment Model

Investors frequently model:

• rent;
• service charges;
• management fees;
• finance;
• voids;
• insurance; and
• maintenance.

Construction defects are harder to model because they are unpredictable.

But they still affect risk.

Imagine two otherwise comparable apartments.

Property A has:

• a reputable developer;
• clear snagging procedures;
• strong handover documentation;
• a recognised warranty;
• responsive building management; and
• clear responsibility for communal defects.

Property B has:

• unclear warranty documentation;
• weak after-sales support;
• unanswered defects;
• limited management records; and
• confusion about common-area responsibility.

The headline yields may look identical.

The operational risk is not.

Completion Is a Handover, Not the End of Due Diligence

The most important lesson is simple:

Do not wait for a defect before learning who is responsible for it.

Before completion, investors should understand:

• who handles snagging;
• how long the developer remains responsible;
• what the warranty actually covers;
• when structural insurance begins;
• who deals with common-area defects;
• how the lease allocates responsibility;
• who submits building-level warranty claims;
• what the property manager will do; and
• which protections actually apply to an investment buyer.

A property can look perfect on completion day and still develop problems later.

That does not automatically make it a poor investment.

Buildings require maintenance and occasional defects occur.

The difference is whether the investor enters ownership with a clear process for identifying the problem, establishing responsibility and protecting their position.

Investors comparing new-build and off-plan opportunities can explore current Residence Index UK properties or visit the Residence Index UK property investment blog for further due-diligence insights.