def find_home_listing_urls(soup):
    """
    Finds all the relative individual house data links on a landing page.

    :param soup: a bs4 Soup object
    :return:  list of strings. Each string is a relative URL representing one house listing.
    """
    listing_url_list = []
    for url in soup.find_all("a", class_="cover-all"):
        listing_url_list.append(url['href'])

    return listing_url_list