I need a spreadsheet designed

I'm looking for a skilled Excel or Google Sheets specialist to create an interactive, all-in-one property investment spreadsheet for me.

The ideal freelancer will be able to design a user-friendly, automated tool that will help by quickly and accurately assess potential deals and investment outcomes.

Project Overview
I want a spreadsheet that can calculate and model a range of property investment scenarios, including:
Buy-to-sell (flip) projects — factoring in purchase costs, refurbishment costs, and sale profits
Buy-to-let investments — including rental income, running costs, and yield calculations
Tax and cost analysis — automatic calculation of stamp duty, capital gains tax, and other related costs where applicable

Key Features Required:
Easy-to-use interface with editable inputs and automated results

Built-in formulas for:
- Purchase price, deposit, mortgage, and finance costs
- Refurbishment and development costs
- Profit margins and ROI
- Rental yields (gross and net) and cash flow
- Stamp Duty and Capital Gains Tax (with adjustable thresholds)
- Visual outputs such as charts or summary dashboards would be a bonus but this isn't a necessity

Skills & Experience:
- Advanced proficiency in Microsoft Excel and/or Google Sheets
- Experience building financial models or property analysis tools
- An understanding of property investment metrics (preferred but not essential if you can follow clear specs)

How to Apply
Please send:
Examples of previous financial or property-related spreadsheets you’ve built
A brief outline of your approach and estimated timeline