It’s hard for life sciences startups to find lab space, and there’s a good reason. The sector has been on a tear, according to a report tallying venture capital and real estate transactions in Seattle and other life science clusters within the last year. Venture capital funding for the life sciences hit record highs nationally, reaching more than $30 billion in the year through September, according to the report by real estate firm CBRE. And while major clusters such as Boston reeled in billions, the Seattle area pulled in a whopping $898 million.