Website HTML -> Wordpress Upgrade Consequences?

Discussion in 'White Hat SEO' started by ColonelSoldier, Jul 28, 2013.

  1. ColonelSoldier

    ColonelSoldier Junior Member

    May 18, 2011
    Likes Received:
    Hey all,
    My question is:

    A client has offered 50% on sales of his product, he is #1 for keyword, however he has not updated the site in 2 years and all links are broken.

    He currently uses a simple outdated HTML design. If I was to upgrade it a complex WordPress design, including woocommerce shop are there any negatives or is it possible to drop ranking significantly if we change the site up? The actual text content remain the same however modern look will look much different on the source side. I'm sure Google has algorithm for dealing with upgrades, however I would like your opinion :).

    What are your experiences with changing websites entirely and it's SEO? Will I have to match the current website's meta data, titles etc.?

    Thanks in advance, I have used the search but could not find any threads in the mean time.