First Time: For this home, it would be very unlikely that being connected to sewer would significantly increase price. A quick call to an appraiser would confirm this. Some buyers absolutely won't consider a home with a septic system. Some buyers are indifferent to whether a home has a septic system so long as the house and property fit their needs. But I've also had buyers who only want a home in the country and septic or well is preferred so they don't have monthly charges. Other buyers only want city/county sewer. If you appreciate an answer, please give thumbs up. For the most helpful answer, please say thanks with a best answer click.