Write retargeting ads

I work in marketing at a construction firm. Help me write ads for people who visited our site and left.

Context: A homeowner who looked at extensions may take months to decide. A commercial visitor was probably checking the firm out for a tender list or after a recommendation.

Before you start, ask me for anything missing from this list:
- Which page they visited
- What usually stops people getting in touch
- What we can offer as a next step

Then:
1. Write for someone who already knows us.
2. Answer one doubt per ad.
3. Offer a small next step.

Give me:
- Four short ads
- The doubt each one answers

Rules:
- Use only the facts I give you. Where something is missing, write [detail needed]. Never invent a number, a name, a quote or a source.
- Describe building work in general terms only. Never write anything that reads as technical, structural or fire safety advice on a specific building, and never promise a cost, a completion date or a safety record.
- Write in plain English, in our voice if I have given you a sample.
- Do not tell me what the rules or regulations say. If something may be restricted, flag it and I will check.

Finish with a list headed "Check before this goes out". Include these, plus anything else the director who approves marketing or our health, safety and quality lead should see:
- Cookie consent for the retargeting audience
- Offers or time-limited prices, and whether they are real
- Project photos and client names in the ads, cleared for advertising use