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Marginly

The operating system for small UK property developers. Appraise deals, track projects, manage budgets.

marginly.co.uk
Owned & operated by Syntaxion Ltd.

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  • Free Calculator
  • Changelog

Resources

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  • API Reference

Company

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Disclaimer: Marginly is a planning and estimation tool. All appraisals, calculations, tax figures and forecasts are indicative only and rely on the data you enter. It is your responsibility to verify every input, assumption and result, and to take independent professional advice (legal, tax, financial) before making investment or purchase decisions. Marginly and Syntaxion Ltd accept no liability for decisions made using the software.

© 2026 Syntaxion Ltd. All rights reserved. Registered in England & Wales.

Marginly.co.uk is owned and operated by Syntaxion Ltd.

Built for UK property developers.