this guide will walk through writing a commercial lease letter of intent and how to lay the foundation to get terms you can agree to. the letter will include a broad overview of the final lease agreement, showing that the company is serious about renting the space if terms can be reached. there is also information that every letter of intent should include to ensure the process goes smoothly. perhaps the most important thing to include in your letter of intent is a clause making it clear that the letter is not legally binding. it is a good idea to discuss a reasonable expiry date for the letter of intent with other decision-makers within your organization.