• what are you doing for roof for the bit half way down the alley? cant work out how that will work if you're going to boundary edge and extension out back is pitched, will the alley also be pitched with a gutter right at boundary?

    Nobody on our road has built a dormer extension, unsure why. If we do just the downstairs we end up with a very generous kitchen diner/ living room but remain 2 bed so unsure if the outlay is worth it. Do you know what % of the cost is for downstairs extension?

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