From the top down..

*De-cobwebbing the ceiling and upper corners in all rooms.
*Dust the blades of overhead fans.

*Dust or vacuum window coverings (draperies, blinds, curtains).

*Thoroughly clean and degrease kitchen appliances:  stovetop (including cooker hood), refrigerator, microwave and dishwasher. (Ovens optional extra)

*Wipe down all kitchen worktops, back splashes, cupboard doors, etc.

*Check kitchen walls for grease splatters and other food stains.

*Dust/vacuum/clean inside cupboards and drawers.

Scour & clean all bathrooms: tubs, showers, sinks and toilets. Inc tiles and fixtures.

*Wipe down bathroom countertops and cupboard doors, as well as inside cupboards and drawers.

*Vacuum/dust/clean bedroom wardrobes and other storage compartments.

*Do the same in other areas: dining room, living room, home office, etc.  wipe shelves, drawers and furniture surfaces.

*Vacuum thoroughly.

*Treat carpets with freshening agent, to remove lingering odours

*Steam hard floors

*Wipe & clean all baseboards.

*Wipe all doors, doorframes, doorknobs, drawer pulls, closet handles, etc.

*Clean mirrors, windows and other shiny surfaces.
* Generally leave your home spotlessly clean and smelling fresh.