Excel Property Calculator Development

I'm looking for a skilled Excel developer to create a comprehensive property calculator for residential properties. The calculator should handle the following calculations:

- Mortgage payments
- Rental income
- ROI (Return on Investment)

Additionally, it should incorporate essential financial variables:
- Property taxes
- Insurance costs
- Maintenance costs

Ideal skills and experience:
- Advanced proficiency in Excel
- Experience with financial modeling
- Knowledge of real estate calculations
- Attention to detail and accuracy

Please provide samples of similar work done.