;December 2020;December 2020;December 2020; Change from last month, per cent;Change from last year, per cent;Index; Residential buildings;0.3;2.8;115.5; Residential buildings, labour cost;0.0;2.3;113.6; Residential buildings, materials;0.2;3.9;117.7; Detached houses of wood;0.0;2.8;115.4; Detached houses of wood, materials;0.0;4.0;117.5; Detached houses of wood, other building work;0.0;3.4;116.3; Detached houses of wood, other building work, materials;0.0;4.6;118.4; Multi-dwelling houses;0.4;2.8;115.7; Multi-dwelling houses, materialsr;0.5;3.9;118.1;