I read it as a terrace roof, ie a flat terraceIf it's a terraced house in the borough then of course it'll be pitched and in slate or clay tiles (if original) with lead flashings etcAssuming this, good access and no additional repairs to carcass or masonry etc I'd goScaffold £400Strip £475 (might save on this if reclaiming slate and scrapping a decent chunk of lead)Re-roof with felt, batten, Spanish slate, lead flashings and new ridge tiles only (nothing to parapet dividers) £2,900Above costs without seeing it, are cost and nett of VAT
Colin Goodman ● 4061d