How to Check Planning Constraints on Any UK Site — Without Paying for LandInsight

If you work in UK property development, planning consultancy, or surveying, you'll know the name LandInsight. It's one of the most established site-sourcing and planning data platforms in the market, used by developers and agents across the country.

It's also expensive. Individual licences start at around £45/month, and enterprise plans can run to £6,000+ per year. For solo consultants, small practices, or early-stage developers, that's a significant commitment — especially when much of the underlying data is publicly available.

So: can you check planning constraints on a UK site without paying for LandInsight? Yes. Here's how.

What Planning Constraints Do You Actually Need to Check?

Before comparing tools, let's establish what a thorough constraint check actually involves. For any development site in England, you should be checking:

• Flood risk — EA Flood Zones 2 and 3, surface water flooding, reservoir flood risk
• Conservation areas — affects PD rights, design requirements, and demolition
• Listed buildings — Grade I, II*, and II, plus their settings
• Tree Preservation Orders (TPOs) — individual trees, groups, areas, and woodlands
• Article 4 directions — removal of specific permitted development rights
• Green Belt — severely restricts new development
• Sites of Special Scientific Interest (SSSIs) — ecological designations
• Ancient woodland — effectively a development blocker
• Scheduled monuments — archaeological designations
• Areas of Outstanding Natural Beauty (AONBs) — landscape designations
• Local Plan allocations — housing, employment, mixed-use designations
• Brownfield register entries — sites identified by councils as suitable for residential development

That's a minimum of 12 separate checks — each potentially requiring a different data source.

Option 1: Free Government Data Sources (Manual)

Every constraint listed above is, in theory, available for free through official government sources. Here's where to find each one:

Flood Risk

The Environment Agency Flood Map for Planning (flood-map-for-planning.service.gov.uk) shows Flood Zones 2 and 3 for any location in England. For surface water flood risk, use the Long Term Flood Risk tool on GOV.UK.

Conservation Areas

There is no single national dataset. You need to check the relevant Local Planning Authority's website — look for their interactive policies map or conservation area appraisals. Historic England maintains a partial dataset, but it's not comprehensive.

Listed Buildings

The National Heritage List for England (historicengland.org.uk) is the definitive source. It's free, searchable, and reasonably good — though it doesn't show the setting of listed buildings on a map, which is what you really need for planning purposes.

TPOs

No national dataset exists. You must contact the relevant LPA or search their online planning records. Some councils have TPO maps; many don't.

Green Belt, AONBs, SSSIs, Ancient Woodland

Available via MAGIC Map (magic.defra.gov.uk) — a free government GIS viewer that overlays environmental and landscape designations. It's powerful but has a steep learning curve and a dated interface.

The Verdict on Free Sources

Yes, the data is available for free. But checking all 12+ constraints manually using 5–8 different websites takes 45 minutes to over an hour per site. For anyone appraising multiple sites per week, this is unsustainable — and the risk of missing something is real.

Option 2: LandInsight

LandInsight aggregates most of these data layers into a single mapping interface. It's well-designed, reasonably fast, and widely used by developers and agents.

What it does well:

• Site sourcing — finding development opportunities based on ownership and planning history
• Title boundary overlays (via Land Registry integration)
• Planning application search and alerts
• Constraint overlays for major designations

What it costs:

• Starter: ~£45/month (limited searches)
• Professional: ~£150–250/month
• Enterprise/Team: £3,000–6,000+/year

Limitations:

• Primarily designed for site sourcing, not deep constraint analysis
• Some constraint layers (like Article 4 directions) are incomplete or absent
• EPC data integration is limited
• Brownfield register data may not be current for all LPAs
• Pricing is prohibitive for solo consultants and small practices

Option 3: LandLens™ — Purpose-Built for Constraint Checking

LandLens™ was built specifically for the constraint-checking workflow that planning consultants, surveyors, and developers perform daily. Rather than being a site-sourcing tool with constraint layers bolted on, it starts with constraints and builds outward.

What LandLens™ includes:

• 20+ constraint layers — flood risk (EA Zones 2 & 3, surface water, reservoir), conservation areas, listed buildings, TPOs, Article 4 directions, Green Belt, SSSIs, ancient woodland, AONBs, scheduled monuments, and more
• Brownfield register data — searchable and filterable across all participating LPAs
• EPC Intelligence — energy performance data for any address, with ratings, recommendations, and historical certificates
• Use Classes reference — comprehensive guide to all current and former use classes, with permitted development rights
• Site reports — exportable constraint summaries for client presentations and due diligence

Head-to-Head: LandInsight vs LandLens™ vs Manual

When LandInsight Is the Better Choice

To be fair, LandInsight does things that LandLens™ doesn't focus on:

• Site sourcing — finding off-market development opportunities by ownership, planning history, and size
• Title boundary overlays — integrated Land Registry data showing ownership boundaries
• Comparable evidence — planning application outcomes in the area

If your primary workflow is finding sites to acquire, LandInsight is built for that. If your primary workflow is checking what constraints apply to a known site — which is what most planning consultants, surveyors, and development managers do daily — LandLens™ is the more efficient choice.

The Workflow That Saves the Most Time

Here's the practical workflow we recommend for any site appraisal:

1. Search the site on LandLens™ — enter the postcode or address and review all constraint layers in one view
2. Check EPC data — if the site has existing buildings, pull the EPC certificates to understand energy performance and potential retrofit costs
3. Review use class implications — use the Use Classes reference to understand what changes of use are available
4. Check for Article 4 directions — critical if you're relying on permitted development rights for a change of use or conversion
5. Export or screenshot the constraint summary — for your client report or internal appraisal document

Total time: under 3 minutes. No toggling between 8 government websites. No downloading PDFs. No calling the council to ask about TPOs.

The Bottom Line

LandInsight is a good product, and for large developers doing volume site sourcing, it may justify the price. But for the thousands of planning consultants, chartered surveyors, and small developers who simply need to check what constraints apply to a site — quickly, accurately, and affordably — there are better options.

The underlying data is published by government agencies and is freely available. The question is how you access and layer it. LandLens™ brings it all together in one place, purpose-built for the constraint-checking workflow.

Book a free demo and see for yourself.