Agents are paid for their insight, opinions and market knowledge. It's not information given away for free, but a good agent will work hard for their client.
Best of luck.
You didn't state whether this is in an area where there are numerous remodels being offered. That will make a big difference for you and what you should offer. The only general guideline we follow is what the market has recently dictated. SOLD data of similar homes tell us what is a fair offer price. The reason that is important is it tells us what other buyers have been willing to pay in that particular area, or the max a seller has been able to get for homes in a particular area.
If there are a number of remodeled homes, it makes it much easier. It becomes a sort of "market of its own" with a notable $/SqFt. If there are not, then it gets a little trickier.
If you are unsure, interview a couple of agents to find the expertise you are seeking. You need a Realtor that is familar with remodeling and home valuation in the neighborhood you are looking in.
I wish you all the best!
So let's look at your side. Has it been brought up to a standard that you value. Does more work need to be done? Was the work done of a quality that you appreciate. Are you will to pay X monthly for the house.
A good maxium to follow is: It is easier to get in than to get out. So when you are ready to sell, what will be the condition of the house. These are all decision paths your Realtor should help you with.
In general, I find older homes, well taken care of or updated through the years represent good values. They are also, as a general rule, in closer in better locations. On the down side, lifestyles change over time and has house may have a dated layout. As an example, older ranch houses have 8 ft. ceilings and most homes today have a lot higher and more detailed and trimed ceilings, a hard thing to change.