Crosswall Property Buildings Insurance

RN7

Hello 

I am purchasing a crosswall property. 

Speaking to a broker they suggested that we put it down as 100% brick since the only structural walls are indeed brick built. 

However by square m of wall, the majority of the external walls are not brick. They are clad stud walling. 

Insurance forms include options for timber frame - which isn't strictly true, this would imply structural timbers which is a different can of worms. 
Equally calling it brick built is not quite right either - though the bits that really matter, i.e. the main structure are brick. 

Does anyone have any experience with this? How have you insured crosswalls?

DullGreyGuy

How does the surveyor define the construction?

RN7

"The property comprises a 2-storey mid terraced Local Authority built house constructed in approximately 1965 of cross walled construction clad and tile hung externally, under a tiled roof on a pitched timber frame. A single storey extension was installed 1986 of cavity brick walls with a mono-pitched concrete tiled roof."

RN7

Also - would party walls actually count as external?