Self Build Mortgages in Hertfordshire
Hertfordshire councils granted 262 self-build plot permissions in the year to October 2024, more than any of the other counties we cover outside London, against a register of 758 people. Plots do come forward here. We arrange self build mortgages across Hertfordshire so you are ready when one does.
- Permissions in Hertsmere, North Herts and St Albans
- Register fees and local connection rules
- Plot policies on the largest sites
- Stage releases and VAT relief
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Self-build in Hertfordshire by the numbers
At 30 October 2024, Hertfordshire’s ten councils had 758 individuals and 7 groups on their self-build registers, and granted 262 self-build plot permissions in the year. Dacorum had the longest register (229). Hertsmere granted the most permissions (91), followed by North Hertfordshire (67), St Albans (50) and Dacorum (40).
Registers in St Albans and North Hertfordshire fell sharply during the year, from 799 to 17 and from 436 to 88, so the numbers are a rough guide to demand rather than an exact count.
Sources: MHCLG self-build and custom housebuilding data (to 30 October 2024, published September 2025; the Hertfordshire totals are our sums); East Herts Council; North Herts Council guidance.
Where Hertfordshire plots come from
Five councils report adopted policies for self-build plots on larger sites: East Herts, North Herts, Stevenage, Watford and Welwyn Hatfield. North Hertfordshire’s policy SP8 requires at least 1% of homes on sites of more than 600 homes to be self or custom-build plots. With the Gilston villages and Hemel Garden Communities planned for thousands of homes, those policies could release a meaningful number of plots over time.
Check the register rules before you apply. East Herts introduced a £25 fee from 1 April 2026, and Part 1 requires 12 months living or working in the district, adult relatives resident for five years or more, or armed forces service. Hertsmere also charges a fee. North Hertfordshire’s register is free with no local connection test.
Self-builders can usually reclaim VAT on materials through HMRC’s DIY housebuilders scheme, and claim an exemption from the Community Infrastructure Levy if they apply before starting work and live in the home for at least three years.
What a lender will need for a Herts self-build
Money is released in stages as the build progresses, either after each stage is checked or, with fewer lenders, in advance. Plan for a deposit of around 25% of total costs.
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Read More From Our Guides
The questions that come up most often on a Hertfordshire build.
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Current rates, first-time buyer relief and the surcharges that catch people out.
Planning a self-build in Hertfordshire?
Tell us about the plot or the site you are watching. We will line up a lender with the right stage releases before you need it.
Read our mortgage guide, view our frequently asked questions, or explore mortgage advice across Hertfordshire.
Where to go next
Related pages for Hertfordshire borrowers, and the national guides behind them.
Self Build Mortgages in Hertfordshire: Frequently Asked Questions
How many self-build plots are approved in Hertfordshire?
Hertfordshire councils granted 262 self-build plot permissions in the year to 30 October 2024, led by Hertsmere (91), North Hertfordshire (67) and St Albans (50).
Do Hertfordshire councils charge to join the register?
Some do. East Herts charges £25 from 1 April 2026 and Hertsmere also charges a fee. North Hertfordshire’s register is free.
Will the big new communities include self-build plots?
Possibly. Several councils have policies requiring plots on larger sites, such as North Hertfordshire’s 1% on sites of more than 600 homes. Ask the council and developer about plot releases.
Can I reclaim VAT on a self-build in Hertfordshire?
Usually yes, on many building materials, through HMRC’s DIY housebuilders scheme. The claim has a strict deadline after completion, so keep every invoice.
How much deposit do I need?
Usually around 25% of the total project cost. Buying the land first, before the build loan, often needs a larger deposit on the plot.
Have a different question? Get in touch or read our full mortgage FAQs.
Written and reviewed by Osman Emin, CeMAP, mortgage and protection adviser · FCA register OCE01003 · Updated