8 Sebastian Mews, High Street, Great Gonerby, Grantham, NG31 8PR

UPRN:10007252114Purpose Built Flat1 bedsBuilt 1983-1990

LeaseholdCouncil Tax: -EPC: D (68)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 4mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

8 Sebastian Mews, High Street, Great Gonerby, Grantham, NG31 8PR

HP Score

/ 100

Mixed

Verdict

today

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate

Evidence

19 of 21 sources

Sale Estimate

£103,000

£97k - £108kHigh

Estimate

£103k

Range

£97k – £108k

Rent Estimate (pcm)

£650

£600 - £650

Monthly

£650

Yield

7.80%

Verdict

Derived from HomePortfolio scores

8 Sebastian Mews earns an INVESTIGATE rating with HP Score 64/100. Investment score 53/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (26/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is leasehold. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesEPC RegisterPortal listingsOfcom Connected NationsOfcom mobile coverageMarket estimates (third-party AVM)HM Land Registry sales matched to addressDefra strategic noise mapping, England Round 4 (Contains Defra data © Crown copyright and database right 2023-2024, Open Government Licence v3.0)Walk ScoreONS Census 2021Police.ukHM Land Registry company ownershipHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

64/ 100

Mixed

Investment Score

53/ 100

Moderate

Crime Score

23/ 100

Moderate

Walkability

26/ 100

Low

Transit & Bike

Transit 15Bike 28

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 10 Nov 2026

This rests largely on a single source. Treat the score as a prompt to investigate, not a conclusion.

Check before relying on this score: leasehold with no service charge disclosed - the stress test assumes GBP 0. It ranks after every home whose inputs are verified.

Valuation edge0/15
claims [AVM +2.9% (HIGH)] → measured edge +0.00pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp
Market estimate used (HIGH confidence) · snapshot 9 Nov 2026
- valuation_snapshotsestimate for 10007252114· as of 9 Nov 2026
Rental economics22.4/40
gross yield 7.8%; range width penalty ×1.00
- valuation_snapshotsrent estimate 650/mo (range 600-650)· as of 9 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -75/mo, -12% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing; leasehold with no service charge disclosed - the stress assumes GBP 0
- listing_factsservice charge / ground rent from the advert· as of 10 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 250 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge
- portal_listingsprice_changes + first_published_date· as of 10 Nov 2026
Risk & liquidity14.5/15
509 sales/12mo in area; valuation range width 11%
- property_intelligencetransactions_12mo

4 of 4 components scored. Ranks on gross yield, the stress margin, risk and disclosed facts. A pricing claim earns only its measured edge: today 0 for the market estimate and at most +0.5pp for sold evidence. The score itself is not yet checked against the outcomes of homes it scored.

Economics

What happens to your money

Price sensitivity

£75,000£115,000

The same scorer re-run at hypothetical asking prices, holding rent, comps and listing history constant. Not a prediction of what the seller would accept.

Your assumptions

Purchase price£100,000

At the asking price

Monthly rent£650/mo

Evidenced range £600-£650

Interest rate5.4%

Loan to value75%

Cash required: £31,300
Net cash flow: £112/mo
Cash on cash: 4.3%
Score at this price: 37

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.93 - clears the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.

Evidence

Where every number comes from

valuation_snapshotsestimate for 10007252114Valuation edge · as of 9 Nov 2026
valuation_snapshotsrent estimate 650/mo (range 600-650)Rental economics · as of 9 Nov 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 10 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 10 Nov 2026
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion
Rental economics needs verification before you rely on it
rent estimate 650/mo (range 600-650)
Stress margin needs verification before you rely on it
service charge / ground rent from the advert

Plan

Before you offer

1. Get two written rental appraisals from local lettings agents.
The rent estimate rests on area-level evidence, not lettings on this street.
2. Treat the gap to the estimate as unproven - compare recent sold prices on the street yourself before pricing an offer around it.
On later completions, homes listed below their estimate sold at the same share of the asking price as the rest.
3. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Every step above was generated from a specific gap or flag in the evidence - no generic advice, no invented tasks.

Valuation & Market

Sale Estimate£103,000

Rent Estimate (pcm)£650

Gross Yield7.80%

1y Growth-

3y Growth+2.9%

5y Growth+3.5%

10y Growth+4.1%

Last Sold Price£90,000 (2022-02-04)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0NG31 8PR

Approval Rate

-12mo

Development

low

S26/1381
Erection of a front first floor extension with installation of a box bay window to ground floor and porch. Erection of 2 metre fence to garden area. Internal alterations.
Pending
S26/1273
To install two 13m light wooden poles.
Approved
S26/1190
Submission of details reserved by part of Conditions 3 (Materials to be used in construction) of planning permission S25/1599 (Two storey extension to bungalow attached by glass link corridor).
Conditions

View Planning Timeline

Ownership

Corporate Ownership64.3%
Overseas OwnershipNo
Lease Term Remaining999+ yrs
CovenantsNone
Lease TypeLeasehold
Last Ownership Change2022-02-04
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

4 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£29,071

Population Density-

Owner Occupied64%

Age Distribution

0-15 16%16-64 55%65+ 29%

View Area Profile

Schools Nearby

The St Sebastian's Church of England Primary School, Great Gonerby
0.1 mi
Good
The Gonerby Hill Foot Church of England Primary School
0.8 mi
Good
Poplar Farm School
0.8 mi
Good
The Priory Ruskin Academy
1.3 mi
Report card2026
Ofsted no longer awards a single overall grade.

6 of 13 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

5 Sebastian Mews
-
£80k
-
6 Sebastian Mews
-
£100k
-
9 Sebastian Mews
-
£90k
-
8 Sebastian Mews
-
£90k
-

Boundary data not available for this property

No registered title polygon, building footprint, or street match for this property yet.

Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN

Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN