Complex sentence: The modest, wood-frame buildings clearly reflect the constraints of time, money, and materials placed on publicly-funded housing construction during the period, simple in design, although they have full-dimension clear fir framing, and heavy interior plaster.
Split into simpler sentences: The modest, wood-frame buildings clearly reflect the constraints of time, money and materials placed on publicly-funded housing construction during the period. Though simple in design, they have full-dimension clear fir framing and heavy interior plaster.