Nhbc snagging: UK New Home Defect Liability Terms

The UK New Home Defect Liability Terms carries 4 published figures read from 2 sources' own pages; the 3 published figures given by term run from 1 to 15 year, read 7 November 2026.

1 to 15 year Range by term 3 published figures, not one market: read the rows
4 Published figures from 2 source pages, read 8 Nov 2026
5 of 18 Sources read that publish one 28% publish a figure at all
  1. Building Safety Act 2022 s.135 (limitation)30 year
  2. Building Safety Act 2022 s.135 (limitation)15 year
  3. NHBC warranty and insurance cover8 year
  4. Building Safety Act 2022 s.135 (limitation)1 year
Every published figure, highest first.
Table view
RowValue
Building Safety Act 2022 s.135 (limitation)30 year
Building Safety Act 2022 s.135 (limitation)15 year
NHBC warranty and insurance cover8 year
Building Safety Act 2022 s.135 (limitation)1 year

5 of the 18 named sources read in full publish a figure; 13 publish none, read 7 November 2026.

By term and time

BreakdownMedianRangeSources
termstructural insurance period after builder warranty (Buildmark years 3-10)8year8 to 8year1
termlimitation period (prospective)15year15 to 15year1
terminitial period (transitional)1year1 to 1year1
timeright of action accrued before commencement30year30 to 30year1

Every figure, with its source

One row per published figure: the figure as the source's own page publishes it, the page, and the day it was read. A figure that is not on a page we read is not on this one.

SourceFigureBreakdownRead
New Homes Quality Code v2 (March 2026)150GBP2026-11-07
NHBC Buildmark: the first two years30day2026-11-07
New Homes Quality Code v2 (March 2026)30day2026-11-07
New Homes Quality Code v2 (March 2026)30day2026-11-07
Building Safety Act 2022 s.135 (limitation)30yearright of action accrued before commencement2026-11-02
New Homes Quality Code v2 (March 2026)24hour2026-11-07
Building Safety Act 2022 s.135 (limitation)15yearlimitation period (prospective)2026-11-02
JCT: making good with rectification periods14day2026-11-07
New Homes Quality Code v2 (March 2026)14day2026-11-07
NHBC warranty and insurance cover8yearstructural insurance period after builder warranty (Buildmark years 3-10)2026-11-07
Building Safety Act 2022 s.135 (limitation)1yearinitial period (transitional)2026-11-02
The sentence each figure was read from (11)
  • New Homes Quality Code v2 (March 2026), read 2026-11-07: a) they must not charge more than £150 (or any future maximum amount that we may set).
  • NHBC Buildmark: the first two years, read 2026-11-07: have gone through the entire builder's complaint process and received a final written response from the builder (within 30 days of sending a formal complaint).
  • New Homes Quality Code v2 (March 2026), read 2026-11-07: keeping to the Code, and the developer must provide this within 30 days.
  • New Homes Quality Code v2 (March 2026), read 2026-11-07: for addressing these, ideally before legal completion or within 30 days if this is not possible.
  • Building Safety Act 2022 s.135 (limitation), read 2026-11-02: Where by virtue of section 1 of the Defective Premises Act 1972 a person became entitled, before the commencement date, to bring an action against any other person, this section applies in relation to the action as if the reference in subsection (1) to 15 years were a reference to 30 years.
  • New Homes Quality Code v2 (March 2026), read 2026-11-07: If a developer charges a fee, they must refund this in full if the customer tells them, within 24 hours
  • Building Safety Act 2022 s.135 (limitation), read 2026-11-02: Where by virtue of a relevant provision a person becomes entitled to bring an action against any other person, no action may be brought after the expiration of 15 years from the date on which the right of action accrued.
  • JCT: making good with rectification periods, read 2026-11-07: (In both cases, this is because the certificate relates only to the defects notified to the Contractor within 14 days of the expiry of the Rectification Period).
  • New Homes Quality Code v2 (March 2026), read 2026-11-07: All Reservation Agreements must include a cooling-off period of at least 14 days.
  • NHBC warranty and insurance cover, read 2026-11-07: This was the foundation for our current Buildmark policy which comprises deposit protection, a two-year builder warranty period backed by the NHBC resolution service and a further eight years’ insurance cover against damage caused by defects in the structure of the property.
  • Building Safety Act 2022 s.135 (limitation), read 2026-11-02: “the initial period” means the period of one year beginning with the day on which this section comes into force.

Read in full, publishes no figure

13 named sources were read in full on the dates shown and print no usable figure. They are counted, never filled in.

Methodology

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).

5 of the 18 named sources that could be read published a usable figure; 13 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere.

The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in year (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 4 figures, never sentences; 16 candidate sentence(s) were refused by a reviewer with the reason recorded.

The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per regime per term, quoted verbatim from the body that writes it with its effective date: the builder liability window (NHBC Buildmark and the other warranty providers), the Code obligations and the complaint clock (New Homes Quality Code, Consumer Code for Home Builders, New Homes Ombudsman), the contractual rectification period (JCT), the statutory floor (Defective Premises Act 1972 as extended by Building Safety Act 2022 s.135) and the technical standard a defect is measured against (Building Regulations 2010 and the Approved Documents in England, the Welsh regulations, the Scottish technical handbooks).

The derivation is the CROSS-REGIME comparison - which clock is shortest for a given home, which edition applies by reservation or warrant date, and what changed at each edition - which no single body publishes because each publishes only its own

16 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.

Sources (18)
Cite or embed this figure

The UK New Home Defect Liability Terms carries 4 published figures read from 2 sources' own pages; the 3 published figures given by term run from 1 to 15 year, read 7 November 2026.

5 of the 18 named sources read in full publish a figure; 13 publish none, read 7 November 2026.

UK New Home Defect Liability Terms, term structural insurance period after builder warranty (Buildmark years 3-10): median 8 year across 1 source, read 7 November 2026.

UK New Home Defect Liability Terms, term limitation period (prospective): median 15 year across 1 source, read 7 November 2026.

UK New Home Defect Liability Terms, term initial period (transitional): median 1 year across 1 source, read 7 November 2026.

UK New Home Defect Liability Terms, time right of action accrued before commencement: median 30 year across 1 source, read 7 November 2026.

Cite as: "snaggingsoftware.co.uk UK New Home Defect Liability Terms", updated 2026-11-08, https://snaggingsoftware.co.uk/datasets/uk-new-home-defect-liability-terms/.

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1 to 15 year

3 of 4 published figures (term), UK New Home Defect Liability Terms, across 2 sources, read 7 November 2026

Source: snaggingsoftware.co.uk UK New Home Defect Liability Terms

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Download the CSV (11 rows, computed 2026-11-08)

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Questions this data answers

What standard is a snag judged against in the UK, how long is the builder on the hook, and who adjudicates?

The UK New Home Defect Liability Terms carries 4 published figures read from 2 sources' own pages; the 3 published figures given by term run from 1 to 15 year, read 7 November 2026.

Where do the figures in the UK New Home Defect Liability Terms come from?

Every figure is quoted from its source's own page and dated (last read 7 Nov 2026). 18 named sources were read and 5 publish a figure; the 13 that publish none are recorded as not published, never estimated.

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