a stylish staircase with wide concrete steps adjoins a wooden deck below. upstairs is the porch of an advanced eco-friendly home

design house outdoor stairway exterior building home modern architecture nobody urban structure stair staircase background stone white construction outside stairs contemporary material pattern wall entrance style front path step nature surface metal city window door dark old railing down light luxury residential concrete ladder steps interior outdoors green decking rendering stylish wide adjoins wooden deck below upstairs porch advanced eco-friendly trim below trim rendering suitable banner for advertising real estate