from looking into the code of your theme (page.php and content-page.php):
yes – this seems to be intended.
there is no code in these files to show a featured image.
If you’d like to add a featured image to pages, you would need to first create a child theme, so your tweaks won’t be overwritten when updating the theme. Here are some guides in case you haven’t made one before:
http://codex.ww.wp.xz.cn/Child_Themes
http://op111.net/53/
http://vimeo.com/39023468
You’d then make a copy of content-page.php and place it in your child theme directory. You can then output the featured image by adding the function the_post_thumbnail() to the file, as explained here in the Codex:
https://codex.ww.wp.xz.cn/Function_Reference/the_post_thumbnail
You can then style it with CSS in your child theme’s stylesheet.
This should point you in the right direction – just let us know if you get stuck at any point.
Thanks Kathryn,
Got it working: http://www.warnerblake.com/4-elwell-house-1888/
(the quick and dirty way, need to tackle the child-theme thing next)
Glad you got it working! Marking this as resolved.