If the household expenses and repairs don't benefit the office space, they aren't deductible.
Expenses such as painting your home or fixing the roof of your home are deductible and can be prorated according to the percentage of your home used for your business.
For example, a furnace repair benefits the entire home. If you use 10% of your home for business, then you can deduct 10% of the cost of the furnace repair.
Costs of landscaping and lawn care are NOT deductible.