The OS for small property
developers.
Appraise deals in minutes, track projects to completion, manage budgets and collaborate with your team — all in one place. No Excel required.
No credit card required. Free forever for 1 project.
Quick Deal Appraisal
Adjust the numbers to see your profit instantly
Everything you need to run a property development
From first appraisal to final sale, Marginly keeps you in control of every cost and every decision.
Deal Appraisal
Instantly model the full financials of any development deal. Purchase costs, SDLT, build, finance, and exit — all calculated live as you type.
Project Timeline
Plan and track your build programme with a Gantt-style timeline. Set milestones, assign tasks and keep the whole project on schedule.
Budget & Spend
Set your budget, log invoices and see exactly where every pound is going. Scan invoices with OCR — or enter them manually in seconds.
Cashflow Forecasting
Model your cash position month by month. See when you'll need drawdowns, plan for contingencies, and never be caught short.
Document Vault
Store planning consents, warranties, contractor contracts and all your project docs in one secure, searchable place.
Team Access
Invite your project manager, architect, accountant, quantity surveyor or JV partner. Control what each person can see and edit.
Your numbers in seconds
Marginly is built around the way property developers actually work.
Enter your deal
Put in the purchase price, build cost and expected sale value. Marginly calculates SDLT, finance costs and selling costs automatically.
See the numbers
Instantly see your gross profit, margin on GDV, ROI and cash required. Colour-coded health indicator tells you if the deal stacks.
Plan & track the build
Once you've bought, switch to project mode. Timeline, budget tracker, invoice scanning, and your whole team in one workspace.
Simple, honest pricing
Start free. Pay only when you need more.
Starter
Perfect for developers doing 1–3 projects a year
- Up to 3 deal scenarios
- Project timeline
- Budget & spend tracking
- PDF export
- 3 team members
Pro
For developers running multiple projects simultaneously
- Up to 10 deal scenarios
- Everything in Starter
- Cashflow forecasting
- OCR invoice scanning
- 10 team members
Business
For portfolio builders and growing development companies
- Unlimited scenarios
- Everything in Pro
- API access
- Priority support
- Unlimited team members
Start your first appraisal free
No signup required. No spreadsheet needed. Just enter your deal details and get instant results.
Free forever for 1 project · No credit card required · Cancel anytime