Ask a client for a referral

I work in marketing at a construction firm. Help me ask a happy client for a referral.

Context: Residential work arrives largely by recommendation from neighbours and friends. Commercial work comes through architects, surveyors and clients who put a contractor's name forward for the next tender list.

Before you start, ask me for anything missing from this list:
- The client and what we did for them
- The kind of person we would like to meet
- Any house rules on referral rewards

Then:
1. Thank them for something specific.
2. Describe who we help in one sentence they could repeat.
3. Make the ask easy: one line they can forward.

Give me:
- The email
- A forwardable two-line introduction

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:
- Any reward for referrals, and whether the client's gift rules allow it
- That the request shares no detail of the client's project or address