What is the most economical way to make an 1100 sq home more energy efficient?
Sealing attic, rodent proof attic, cleaning/repair duct work, insulation, updating light switches, light fixtures, and update water heater, weathrize, footing, paint, bathroom remodel kitchen remodel bump out master bedroom and bath to add walk in closet/bathtub make up area, move washer and dryer
What you are talking about here is a very extensive energy efficiency upgrade renovation, and there is a lot of information in our guide pages to help you find the most economical way to do all these things. The best way forward depends on a lot of issues, most of which is your budget. so i'll point you to a few relevant pages to read, and please feel free to follow up if you don't find all you need on these pages. This page is probably your first step to getting off on a good start -
Top tips for planning and building a green home on a budget
And here are some more:
How to insulate an attic properly - it is very important when insulating an attic that you maintain proper ventilation. A lot of people when doing a DIY renovation don't realize that blocking soffit vents with insulation stops airflow and leads to frost in attics.
Here is our page about how to keep rodents out of your house.
See here to learn about choosing the right insulation for attics and walls
Here you can read find design ideas for durable kitchen and bathrooms
That is a start to a lot of the topics you asked about, and you can search for more building guide topics with our keyword search bar at the top of the page.
Here you can find where to buy healthy green building materials, and here is our directory of local green building general contractors. By listing your location you can narrow the search to find products and builders in your area.