Guide
Section 106 for small sites
How Section 106 planning obligations apply to small and medium residential developments. Covers what SME developers can expect, affordable housing thresholds, and proportionate negotiation.
If you are building 10 or more homes, you may need a Section 106 agreement with the council. Check if your development meets the affordable housing threshold. Know the 3 tests for valid S106 obligations.
- Check local plan for S106 policies before applying
- Discuss S106 obligations at pre-application stage
- Affordable housing required on sites with 10+ homes
- Small sites under 10 homes exempt from affordable housing
- Every S106 must pass 3 tests: necessary, directly related, proportionate
- Challenge obligations that do not meet the 3 tests
- Medium sites (10-49 homes) have simpler S106 rules
- S106 negotiation should take no longer than 13 weeks
- Keep records of all S106 agreements and payments
- Contact your local planning authority for help
Section 106 (S106) agreements are planning obligations negotiated between developers and local planning authorities. For SME developers building small or medium sites, S106 can be a significant cost and source of delay.
This guide explains what to expect and how to navigate S106 proportionately for smaller schemes.
When S106 applies to small sites
Affordable housing thresholds
The National Planning Policy Framework sets thresholds for when affordable housing contributions can be required through S106:
- 10+ dwellings: Affordable housing contributions normally required (typically 10-40% depending on local policy)
- Under 10 dwellings: Affordable housing contributions should not normally be sought
- Designated rural areas: Contributions may be sought on sites of 6-9 dwellings
- First Homes: 25% of affordable housing must be First Homes (discounted market sale)
Even below the affordable housing threshold, other S106 obligations (highways, open space, education) may still apply.
The three tests for valid S106 obligations
S106 for the new medium sites category (10-49 units)
Government reforms recognise that S106 can be disproportionately burdensome for medium-sized developments. Key easements include:
- Proportionate process: LPAs should not require the same level of negotiation as for major sites
- Standardised heads of terms: Template S106 heads of terms are being developed for medium sites
- Viability testing: Medium sites should not routinely require independent viability assessment
- Time limits: S106 negotiation for medium sites should complete within the 13-week determination period
Negotiating S106 as an SME developer
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Check the local plan policy
Before submitting your application, read the local plan's S106 and affordable housing policies. This tells you what the LPA will likely seek.
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Discuss S106 at pre-application stage
Raise S106 early in pre-application discussions. Understanding likely obligations before you submit helps you factor costs into your land purchase and scheme viability.
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Know the three tests
Every S106 obligation must pass three legal tests - necessary, directly related, and fairly and reasonably related to the development. Challenge any obligation that fails these tests.
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Consider viability if obligations are excessive
If S106 obligations make your scheme unviable, you can submit a viability assessment. This is an independent appraisal showing the scheme cannot bear the full policy-compliant obligations.
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Negotiate phased payments
For small sites, cash flow is critical. Negotiate trigger points that align with your development programme - for example, payments on occupation rather than commencement.
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Get legal advice on the agreement
S106 is a legally binding agreement. Ensure you understand every clause, particularly the consequences of non-compliance and any provisions for modification.
Keep records of S106 costs. Track all S106-related expenditure against your original budget. If circumstances change, you may be able to apply to modify the agreement under Section 106A.