4 · Deliver and learn

The leaflet, and what good looks like

Evaluate the tenant-rights leaflet and its proposed referral support. Check delivery, plausible contribution to outcomes and resources used. Leaflet theory of change · Separate policy and future work.

Magenta Book 2026 · proposed plan

Learn what works, for whom and why

Process

Did people receive and understand the advice? Did the reporting and referral pathway work?

Impact

What changed, and how plausibly did the leaflet and support contribute? Check other explanations.

Value for money

What did delivery cost? Consider outcomes, access and harms alongside cost per recipient.

Evaluation questions and evidence
Proposed questions for the leaflet pilot
QuestionEvidence neededDecision supported

Plan collection before rollout

Relative to the agreed pilot start; no start date or delivery commitment has been set.

Six-stage evaluation schedule and decision gates
    Readiness, data quality and ethical safeguards
    Outcome measures and success definitions

    Proposed measures · no pilot results connected

    Measure success along the whole pathway

    Definitions, timing and responsible roles
    Stage / measureHow to calculate or recordWhen / ownerWhat good looks like

    Targets below are proposed standards for discussion, not agreed commitments or observed results. Set numeric improvement targets after a baseline and capacity review. Show denominators, missing records and follow-up response rates alongside every result.

    Follow-up, humidity protocol and attribution limits

    Before distribution

    Use a short knowledge check and record existing reports, housing condition and barriers. Log the leaflet version, distribution date and venue code. Agree follow-up consent.

    2–4 weeks later

    Repeat the knowledge check; ask about reporting, service response and obstacles. Deduplicate households privately and distinguish a newly reported problem from newly occurring damp.

    8–12 weeks later

    Check repair evidence, tenant-confirmed improvement, repeated comparable readings and recurrence. Official guidance recommends inspecting at least six weeks after remedial work; schedule this from the repair date even if it falls beyond the pilot check. Record unresolved cases and suitability of accommodation separately.

    Before estimating additional impact: assess data quality, suitable comparison units, realistic sample size, season, spillovers and analytical capacity. If feasible, evaluate enhanced outreach using an approved comparison or random phased design, with standard rights information and urgent support available to all. Pre-specify the primary outcome, timing and analysis. A few willing venues or a simple before-and-after change do not establish a causal effect.

    Winter check: where feasible, revisit cases in colder weather to identify seasonal recurrence. Keep urgent and unresolved cases in active follow-up rather than waiting for the evaluation date.

    Humidity protocol: compare the same room, device, placement and times of day over multiple days; record temperature and conditions. Lower humidity without temperature or condition evidence does not establish a successful repair.

    Data: case IDs, dates, tenure, area, referral channel, consent, inspection/repair milestones, condition/readings and follow-up status belong in an approved private case system. Publish only appropriate aggregates with small-cell suppression under Porchlight’s disclosure rules.

    Assess costs and value for money

    Start with a transparent cost-and-outcome table. Unit costs alone do not establish value for money or a causal benefit.

    Proposed economic evidence; no costs or results are connected
    MeasureDefinitionInterpretation

    Details