100K+ to +++. Buy something else.

We did it. I hated to toss away a perfectly good roof, but it made sense to add on over an existing porch. It could cost up to $100 depending on what you put it. Consider heating, electrical, shoring up the downstairs room, matching the roof.

If it's the right place and the right price, it makes sense. It might make sense to find a bigger house. Only you know that.

My house had an existing sunroom, fully insulated and a full basement beneath. It is 8x13. The roof abutted our master bedroom. We added a bath room above it. Our existing roof was in good shape and our siding and roofing tiles were still available. No plumbing preexisted on this side of the house so trenches had to be dug in our front yard through walk way and driveway. Both of those cost close to $10 k to replace. Our costs without counting the architect, 5k, driveway and without having to reroof whole house and reside whole house( if we could not have matched roofing it would have added 7k) was $67,000. We provided and made our vanity out of an antique dresser thereby saving thousands and we painted walls, ceiling and wood work ourselves, estimated painting cost were $1900. We did no bath tub and very little frills.

Here are pictures of before and after. We lost a lot of curb appeal

bathroom is pretty basic but has great natural light.

670,000 or 67,000?

Your house is beautiful

Oops I edited to read 67k. I am making dinner, kids homework and packing for a last minute ski trip while typing sorry!

Location? That is key to answer this question. My friend did a similar addition to her house that she'd lived in for 10 years in Arlington, MA, right next to Boston. The addition cost about $350k. Money well spent cause she didn't want to move and have to change her kids' schools, and in that town, a larger home would cost $1.5-2 million, if it could even be found there, and would likely still need renovation.

So you need to tell us general locale to be able to answer your questions, as e.g. Waterloo Iowa will be very different from Scarsdale New York.

I too lived in this house for eleven years prior to the small addition. I had no more mortgage and live on the metro north commuter line. I also played love it or list it for a full year before committing to an addition. Nothing I liked as much as my house ever entered my market in my price range. I was not looking at gaining profit at resale and have no intention to ever move. If this is a stepping stone house it is not a wise endeavor nor investment. You would have to live in the house great market or not, for at least a few years to make it worth the expense and effort, I believe.

Yikes, I had to edit the amount in my post above. I checked with my friend and she told me that her addition was "at least" $350k which is not including the new furniture, rugs and window treatments for the added space.