Garden cottage builders in gauteng. manhattan construction specialises in the building of standard or custom designed garden cottages. a garden cottage adds value to your property, and is an opportunity to bring in extra income.. Garden cottage plans shelley is a single-bedroom house plan with economic solutions to save you money on water and heating. self-sufficient and comfortable, garden cottage plans shelley is a solution for owners of smaller properties. shelley can serve either as a weekend house, or a house plan for a small. Download and print this garden plan