Beyond LinkedIn
Choosing the Right Platforms for BD and Recruiting
In Part 1 of this series, we established that social media in AEC serves two distinct audiences: the business development audience you want to win work from, and the recruiting audience you want to attract talent from. We made the case that LinkedIn is the platform where both audiences are most actively engaged and where a disciplined strategy pays the highest dividends.
But LinkedIn is not the whole picture. Instagram, Facebook, YouTube, and TikTok each play a role in a complete AEC social media strategy, and each one serves your two audiences differently. Some are stronger for BD. Some are almost entirely recruiting tools. Some are worth significant investment. Others deserve a presence but not much more than that.
Here is an honest, audience-aware breakdown of each platform and what it actually means for AEC firms in 2026.
Instagram: primarily a recruiting platform, and that is not a knock
Instagram's average engagement rate sits at 0.48%, which looks modest until you understand what the platform is actually doing for AEC firms that use it well. Instagram is not a business development tool in any meaningful sense for this industry. Decision-makers are not scrolling Instagram to evaluate engineering firms. But candidates absolutely are.
For recruiting, Instagram is one of the most powerful platforms available to AEC firms, precisely because it is visual and informal. Project photography with real context, construction progress from the field, team culture moments, community impact, and employee stories all perform well here. This is the content that lets a prospective hire see past the job description and understand what your firm actually looks and feels like day to day. Young architects, engineers, and coordinators are evaluating this before they ever submit an application.
On the format side, Reels generate 36% more reach than static posts, making them the strongest tool for reaching new audiences on the platform. Carousels earn 12% more engagement and consistently generate the highest number of saves, which signals to the algorithm that your content is worth keeping. Both formats work well for recruiting content when the underlying material is genuine.
The honest answer for most small to mid-size AEC firms: Instagram earns its place in your strategy if you have strong project photography and someone who can post consistently. It is not worth forcing if neither of those conditions is true. A neglected Instagram account does more damage to your recruiting brand than no account at all.
Facebook: not dead, but be honest about what it is for
Facebook's average engagement rate holds at 0.15%, flat year over year. That number is not inspiring, and for most AEC firms, it is not a platform worth significant organic content investment. Your clients are not discovering firms on Facebook, and your best candidates are not evaluating your culture there either.
Where Facebook still has genuine utility for AEC is in two specific areas. The first is paid advertising. Facebook ads convert at an average of 9.2%, making it one of the strongest platforms for targeted, direct-response campaigns. If you have a specific message for a specific audience, a local developer community, a municipal stakeholder group, or a targeted candidate pool in a specific geography, a modest Facebook ad budget can reach them with precision that organic content cannot match.
The second is community visibility. Firms doing school construction, municipal projects, healthcare facilities, or other community-facing work benefit from a Facebook presence that keeps them visible to the broader public, elected officials, and civic stakeholders who may not be on LinkedIn. This is a light-touch BD function, more about awareness than active engagement.
The practical approach: maintain a presence, cross-post from LinkedIn, and reserve meaningful investment for paid campaigns when you have a specific goal to accomplish.
YouTube: the most underused platform in AEC, for both audiences
YouTube does not get enough attention in AEC social media conversations, and that is a significant missed opportunity. It sits in a unique position as both a social platform and the world's second-largest search engine. Content on LinkedIn has a lifespan measured in hours. A well-titled YouTube video keeps generating views for years.
For BD, YouTube is where long-form authority lives. Project walkthroughs, process explainers, recorded presentations, and thought leadership interviews all perform well here because they show up in search results when owners, developers, and agencies are actively looking for answers. A firm with a library of ten genuinely useful videos on topics its clients care about is more findable, and more credible, than a firm with a polished website and nothing else.
For recruiting, YouTube offers something Instagram cannot: depth. A ten-minute video of a project manager walking through a complex coordination challenge, or a principal discussing how the firm approaches design review, tells a candidate far more about your culture and your standards than any photo carousel. Candidates who find and watch that content are self-selecting at a high level of interest before they ever reach out.
Production quality is a common concern here, and it should not be. In AEC, helpful content beats highly produced content every time. A clear, well-lit 60-second video shot on a phone that explains a specific detail or answers a question your clients ask repeatedly is more valuable than an expensive brand film that sits unwatched. Start with the questions you already answer every day and build from there.
TikTok: watch it closely, but know your audience first
TikTok's engagement rate of 3.70%, up 49% year over year, makes it the highest-engagement platform in raw numbers. But for AEC firms, engagement rate is the wrong starting question. The right question is whether your specific audiences are there.
For BD, the honest answer is not yet in meaningful numbers. Owners, developers, and public agency decision-makers are not discovering engineering and architecture firms on TikTok. That may change as the platform's user base ages and diversifies, but it is not the reality today.
For recruiting, the picture is more interesting. The construction trades have a genuinely active TikTok presence. Contractors, superintendents, and field crews sharing project progress, equipment operations, and problem-solving in the field have built real audiences there. If your firm targets field talent or wants to attract younger candidates into construction management or engineering roles, TikTok is worth exploring seriously.
For most MARKETLINK clients right now, TikTok belongs in the monitor-and-watch category rather than the active investment category. Keep an eye on what forward-thinking AEC firms are doing there. When the audience data starts to shift, you will want to be ready to move quickly rather than starting from scratch.
Build your platform strategy around your audiences, not the trends
The firms that get the most out of social media are not the ones on every platform. They are the ones that have made deliberate decisions about where their two audiences actually spend time, what content serves each audience well on each platform, and how to show up consistently without burning out the people responsible for making it happen.
A practical starting point for most AEC firms: LinkedIn as the primary platform for both BD and recruiting, Instagram as a dedicated recruiting and culture channel, YouTube as a long-term authority-building investment, Facebook for paid campaigns and community visibility when relevant, and TikTok as a future consideration. That is not a complicated strategy. It is a clear one, and clarity is what most AEC social media programs are missing.
One final note worth keeping in mind across all of it: social media platforms are not owned real estate. Algorithms change, platforms rise and fall, and reach that exists today can disappear tomorrow. The firms that are most resilient build social media as a traffic source that feeds owned channels, email lists, direct relationships, and a website that works hard on their behalf. Platform risk is real in 2026. Build accordingly.
