To improve the appearance of your cinder block foundation and make it look more like a poured foundation, you can apply a layer of stucco or a cement-based resurfacer. These materials can create a smooth, uniform finish that can significantly enhance the look of your foundation.
First, clean the cinder blocks thoroughly to remove any dirt, mold, or loose debris. You can use a pressure washer or a stiff brush with a cleaning solution. Once dry, you should apply a bonding agent to help the new material adhere properly.
For stucco, mix it according to the manufacturer's instructions and apply it with a trowel in a thin layer, smoothing it out as you go. If you opt for a cement-based resurfacer, follow similar steps, ensuring to work in sections for a consistent finish.
Cost for materials can range from $0.50 to $2.00 per square foot, but this can vary by location and product choice. If you're unfamiliar with this type of work, consider hiring a licensed contractor, especially if your foundation has structural issues.
As a next step, get 2-3 local quotes on Handyman.com to find a professional who can help with this project.
— Assisted answer