Hi , i’m in the process of buying a B.I.S.F semi and got a bad call from the surveyor saying he’ll put a nil value on the house because he doesn’t know if the house when bought from the council was later refurbished through an approved scheme (his words) and next door told him theirs wasn’t! nobody can find any documents confirming that it had been.
Ironically the current owner is mortgaged through the nationwide and my mortgage company is its subsidiary The Mortgage Works , also this it has been bought twice in the 2000’s.
I’m busy banging my head at the moment feedback is greatly welcome . karn

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Ed is 100% correct on this.

Your potential new house does NOT require certification.

Any house designated as defective under the defective housing Act of 1984 and later incorporated into the housing act of 1985 DOES require repair work which must be carried out under an approved renovation scheme. There are several types of defective housing, many of which are made of PRC (Precast Reinforced Concrete).

Here is a list of the majority of defective houses in the UK

*Defective Housing Part XVI Housing Act 1985.

England and Wales
Airey House
Boot House
Boswell house
Cornish Type 1 House
Cornish Type 2 House
Dorran House
Dyke House
Gregory House
Hawksley House
Lileshall House
Myton House
Newland House
Orlit House
Parkinson Frame House
Reema Hollow Panel House
Schindler House
Smith House
Stent House
Stonecrete House
Terran House
Underdown House
Unity House
Butterley House
Waller House
Wates house
Wessex House
Winget House
Woolaway House

Blackburn Orlit House
Boot House
Dorran House
Lileshall House
Lindsay House
Myton Clyde House
Orlit House
Tarran House
Tarran Clyde House
Tee Beam
Unitroy House
Whitson Fairhurst House
Winget House*

The BISF house is a steel framed house. It has never been classed as defective and does NOT require approved certification.

Pass this information on to your surveyor and remember that he is working for you too, as you are paying him.

He should at least know what type of house he is surveying. This is not good practice on his behalf Karn and simple mistakes like this can seriously jeopardise your sale.

Good luck and please let us know how you get on.


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Hi and welcome, this sounds like another case of a surveyor mistaking the house for a precast reinforced concrete (PRC) house. These, unlike a BISF house, are not generally mortgageable unless they have been “repaired” under an approved scheme. By “repair” it means the house has its external walls pretty much removed and rebuilt. This is NOT necessary for a BISF house. I would suggest nobody can find the documents because they don’t exist, because no such “scheme” exists for a BISF house. I would ask the surveyor if he has any experience of BISF houses and also exactly what approved scheme he’s looking for.

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