Construction type is assessed on specifics rather than on labels, and the pattern is not the one most people expect. This sets out one provider's published lists in their own words, including a date band that declines mid-century timber frame while referring Tudor.
Knowing your house is timber framed tells you almost nothing. Knowing when it was built tells you almost everything, and the pattern is not the one you would guess.
Equity release may involve a lifetime mortgage, secured against your property, or a home reversion plan. It will reduce the value of your estate and impact funding long-term care.
The oldest timber-framed houses do better than the middle-aged ones. A Tudor frame is looked at; an interwar one is not. Knowing "timber frame" tells you nothing here. Knowing the decade tells you almost everything.
These are Legal & General’s published criteria, opened 6 September 2026. One provider on one date, quoted as an example of how such rules are written. Other lenders draw their lines in different places.
Quoted rather than summarised, because a construction list is only useful if you can match your own survey’s words against it. If your report uses one of these terms, that is the term to take to an adviser.
None of that is a decision about your property, and no list like it can be. It is one provider’s published position on one date, and criteria change. What it does give you is the vocabulary: the exact terms to look for in your own survey, and the ones worth asking about.
“Wimpey no fines or Mundic properties with current A1 category report held”
Legal & General, opened 6 September 2026
Two named construction types move from a problem to accepted on the strength of a report. If your survey has ever mentioned Mundic or Wimpey No-Fines, whether a current A1 category report exists is the first thing to establish, and it may already be in your purchase paperwork.
That is one lender's published position and it names one category of report. It is not a general rule that a report fixes a construction type, and no report changes what a property is.
Legislation that allowed certain system-built house types to be formally designated as defective by reason of their design or construction. The criteria above decline properties defective under it by name, which is why the designation matters rather than the appearance of the building.
Whether a particular property falls under it is a question for a surveyor and a solicitor. We are not going to tell you whether yours does, and nobody can from a description.
One document does most of the work: whatever survey you had when you bought the place. Find it and read what it says the walls are made of. That sentence is what everything else here turns on.
Equity release may involve a lifetime mortgage, secured against your property, or a home reversion plan. It will reduce the value of your estate and impact funding long-term care.
We cannot classify your property, and we will not try. Nobody can identify a construction system from a description or a photograph, which is exactly why the lists above end in a surveyor going and looking. We are also not telling you whether yours is designated defective, whether a report would help, or whether any lender would proceed.
Bring your survey's own words to the first one. It makes every question after it easier to answer.
What exactly does my survey say the walls and frame are made of?
Bring the words, not the impression. The published lists name specific systems and a general description cannot be matched against them.
If it is Mundic or Wimpey No-Fines, is there a current A1 category report?
For those two types this is the question that changes the answer, on the criteria quoted here.
Is the property designated defective under the 1984 Act?
A question for a surveyor and a solicitor. It is a formal designation, not a judgement about how the house looks.
Which lenders publish criteria my construction type could meet?
For an adviser with the whole market. One lender's decline list is one lender's list.
Would a fuller survey help my case, and what would it need to establish?
Ask what it would need to say before commissioning one. A Level 3 building survey costs money and is worth commissioning deliberately rather than hopefully.
Short answers to the things that come up most. None of it is advice, and every figure on this page carries its source.
Not on its own, and the decade decides it. One lender publishes timber-framed properties built after 1960 as accepted, before 1900 as referred, and between 1900 and 1960 as declined. The oldest houses do better than the middle-aged ones.
On that lender published list: standard brick or solid stone, timber frame after 1960, steel frame after 2001 subject to valuer comments, and Wimpey No-Fines or Mundic properties with a current A1 category report held.
For two named types it can. Wimpey No-Fines and Mundic move from a problem to accepted on the strength of a current A1 category report. That is one lender position naming one category of report, not a general rule that a report fixes a construction type.
Both have published thresholds. Single skin walls up to 20% of the exterior area are referred, single skin on two floors is declined, and an extension exceeding 50% of total floor area is referred.
Whatever your last survey called the construction. Your homebuyer report or valuation from when you bought is the single most useful document here, and most people have one somewhere.
Equity release may involve a lifetime mortgage, secured against your property, or a home reversion plan. It will reduce the value of your estate and impact funding long-term care.
One qualified equity release adviser. They will go through your figures and tell you if there is a better answer. It costs nothing and commits you to nothing.
Google Analytics, Microsoft Clarity and Vimeo. Say no and none of them loads. What each one stores, and what Microsoft use theirs for.