---
title: The Tenant Advocate (4)
description: The Tenant Advocate - Commercial Real Estate Blog (4)
---

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# The Tenant Advocate

## The Tenant Advocate

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*By Benjamin Osgood - March 10, 2020*

#### My landlord asked me to sign an estoppel. What is it?

An Estoppel Letter or Certificate is a document that a landlord or lender may send to a tenant for their signature from time to time during their tenancy.  

[Read More](https://www.recreatecre.com/blog/my-landlord-asked-me-to-sign-an-estoppel.-what-is-it)

[

*By Benjamin Osgood - February 18, 2020*

#### The Truth About Green Offices

](https://www.recreatecre.com/blog/the-truth-about-green-offices)

[

*By Benjamin Osgood - February 17, 2020*

#### The Basics of an Office Sublease

](https://www.recreatecre.com/blog/the-basics-of-an-office-sublease)

[

*By Benjamin Osgood - February 17, 2020*

#### Should I Hire a Broker When Renewing My Office Lease?

](https://www.recreatecre.com/blog/should-i-hire-a-broker-when-renewing-my-office-lease)

[

*By Benjamin Osgood - February 17, 2020*

#### Is “Free Rent” Really Free?

](https://www.recreatecre.com/blog/is-free-rent-really-free)

[

*By Benjamin Osgood - February 17, 2020*

#### Lease Structure Key to Energy Savings

](https://www.recreatecre.com/blog/lease-structure-key-to-energy-savings)

[

*By Benjamin Osgood - February 17, 2020*

#### Why the sale of a building can be expensive for the tenants

](https://www.recreatecre.com/blog/why-the-sale-of-a-building-can-be-expensive-for-the-tenants)

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#### Recent blog posts

[

**Additional Rent: The Office Lease Expense That Deserves More Attention**

 24 June 2026 

](https://www.recreatecre.com/blog/additional-rent-the-office-lease-expense-that-deserves-more-attention) [

**Is the San Francisco Office Market Finally Rebalancing?**

 15 February 2026 

](https://www.recreatecre.com/blog/is-the-san-francisco-office-market-finally-rebalancing)

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