They're shady builders with poor quality construction.

I wouldn't use them to complete the job, they've already shown they aren't doing quality work.

Also, where can I buy low cost blinds that are decent quality? 

ADUs can significantly enhance your property's value by adding living space that can be used for rental income or as additional living quarters for family members.The increase in value from an ADU can vary widely depending on several factors such as the size, quality, and functionality of the ADU, as well as its integration with the main property.

Yes, prices are high, but there is good potential for appreciation, and tenants are generally reliable and high quality. 

That is all about your experience, skillset, and appetite for risk, as well as the quality of your renovations.

Then, obtain quotes from at least three actual contractors. ( insurance and all that depending on the work)You'll likely encounter three types of contractors:The Super Expensive Guy: Highly skilled but often in high demand, resulting in premium pricing.The Average Guy: Offers good quality work at a reasonable price.

@Karl Kauper with a SF you can require the tenant to take care of lawn and snow, but they might not be up to your standards. 

Other qualities are being a member of National Notary Association.

Experienced investor looking for new (quality) direct skip and cold calling companies