This list gives you, the owner, and me a overview of your house. It helps us set priorities and gives us a record
You want a new wing that will open out to your back yard. You also want another bedroom and bath,
Your septic system's placement will determine where you can add on.You will not want large trucks driving over it during construction.
If the field should be expanded, now is the time to consider that.
If you have the opportunity to connect to a town system, now may be the time. That work and expense should be included in the job.
Despite this list when we renovate existing houses we find things. I remember the excavation of unknown septic systems at two different jobs. Both were disconnected - we checked to be sure! - but one needed to pumped.