Here are some practical ideas when looking to buy storage units and office chairs:
•    Shelving (or storage units) is something that you will require if your workplace has a constant flow of documents and information in paper or paperless format (magazines, books, files, discs, CDs, etc). You need to consider the amount of space available to fit in your documents.
•    When you buy a used storage unit, desk or any furniture, check whether the moving parts are properly functional. Check if the drawers smoothly open and shut. See if the keyboard racks move properly.
•    If there is a lock, ensure that it is functional. See to it that you are given keys to it!
•    Take into account your budget. Pine wood is always cheaper than other alternative woods.
•    When buying chairs for your employees, it is critical to understand that they will be using the chairs for many hours a day, hence they should be as comfortable, supportive and relaxing as possible.
•    Sitting in adjustable and flexible height chairs - with arm supports and a high-back- your employees will feel comfortable, and can keep a healthy posture. This will result in increased productivity.

deally, you should use a company such as Space Planning UK to ensure you get the optimum space from your office.  When doing their office design, Space Planning UK will also re-use your old or existing furniture.