You might want to look into AB2299 for the state of California. Add additional living area and raise the value 160k-400K to all R1 Properties. We build these for a living and are seeing a 2% return rate on your investment.
Direct added value to your home:
Finish out unfinished living areas
Upgrades to bathroom and kitchen
Add additional living area
All other items completed to home have negligible value added benifits in terms of Apprasial added value.
Same as others said, Remodeling magazine's Cost Vs. Value report is a great resource!
As a roofing contractor, of course I am going to suggest an upgrade to your roofing system. And that's not just a biased opinion either. Working with a lot of realtors in our area it has been proven that the roof can be as much as 40% of your curb appeal. Especially when the system incudes things like the right color drip edge on the rakes and eaves, and high profile ridge caps. Both of those items are relatively inexpensive and can make a very noticibale difference compared to homes that don't have them. Selecting the proper type of shingle of course also plays a huge role. About 95% of re-roofs these days use a standard architectural tpye compositions shingle but picking something from the designer line can realy make your home stand apart. Then again, other rof covering options besides ashphalt shingles can make an even greater impact.
As a GAF Master Elite Copntractor, we are partial to their line of products and I have included a link below to their designer apshpalt series.
Good luck!
http://www.gaf.com/Roofing/Residential/Products/Shingles/Designer
I agree with Chris. The Cost vs Value report is the "go to" guide and is impartial. Personally, I like to focus on first impressions and curb appeal. Exterior dressings like corwn mouldings and simple shrub pruning is a great low cost way to give the home a wow factor.
You might also contact a couple of local realtors to see what people in your area are looking for in the home they want to purchase.
Check out the 2018 Cost vs Value Report from Remodeling Magazine.
2018 Remodeling Cost vs Value Report
This will give you an idea of the average return on your investment in the region where you live.
The one factor it will not give you is number of intangibles you may receive from the project you're considering.
Make sure those are also part of your equation before making a final decision on the impact a remodeling project may make on the "value" of your home.
I would recommend that you look at remodeling magazine. They do an annual study of cost versus value For mini interior and exterior home improvements.
1. to make sure all crawl space vents are close .
2. you can check all exterior doors and windows do not have air leak .
3. check attick insulation should be minimum 10'' or you can add more insulation .
4. you can cover large exterior window's glass with clear 3mil plastic .
5. you may check your heater system , and air filter need to repace every month .
You must have paid without inspecting the work. Building code requires a weather barrier under the siding and that it be taped at openings and all seams. Was there a permit obtained to do the work? If not, did your locality require one. If they did, report the contractor to the inspection department as having not pulled a permit and gotten the right inspections. They may be able to help you and it oculd be a license violation in your state. Although most will refuse if a permit was not obtained and the proper inspections performed. Maybe they will go after the contractor and have them make it right. Have you checked your ceiling insulation? Heat rises and if the attic is not properly insulated(This is where 2/3 of the heat escapes from a house. and the soffits(overhang)need to be vented. Heat will escape through the roof. How about your windows. Caulking around the j- channels where it meets the frame may stop some air and water infiltration.Do this with a clear caulking made for that purposed. A lot of heat escapes through windows if they are not properly sealed. You may be able to put some plastic film over the windows and inside casings like 3-M. This may also help you with heat loss. There are foam inserts that you could put in the electrical outlets by removing the cover screw ,,pulling the cover, putting them in place and then puttng the screw back in. Maybe the walls should have been insulated while you had the siding off. There are many things you havent't told us but these are ideas that may help your situation. It sounds like you do not have a foundation with blocks. But they are also a souce of heat loss. If you do, you could insulate the rim joists with a high density foam sheet and cut them to fit. and then use caulk or spray foam to seal around the edges. Hope this helps you.
Doing a water test to determine where the water is entering may locate the issue. Also checking your roof vents, flashing, chimney, gutters and downspouts
Are you asking how to repair or solve the problem? Always need to look at flashing gutters and downs and roof penetrations to locate the leak.