Consider budgeting in a 15% contingency fund to cover surprising costs or
desain ubin luar ruangan upgrades that crop up during building. For example, based on RemodelingImage.com, putting in a flat roof on a 1,500-square-foot home prices $6,000 to $15,000 on average. For a gable roof, the typical two-pitch roof, the set up price is $15,000 to $20,000 and as much as $30,000 whenever you think about the cost of asphalt shingles. An even more complex roof, the Mansard roof – with a flat rooftop and multiple pitches – can have set up costs of $30,000 to $60,000 on average.