12 Derwent Close, Seaham, SR7 7BS

UPRN:100110457613Semi-Detached House2 bedsBuilt 1950-1966

FreeholdCouncil Tax: Band AEPC: D (68)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· 1mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

HP Score

/ 100

Strong

Verdict

5 days ago

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Strong fundamentals; flood risk not assessed

Evidence

20 of 21 sources

Sale Estimate

£133,000

£126k - £139kHigh

Estimate

£133k

Range

£126k – £139k

Rent Estimate (pcm)

£950

£900 - £1k

Monthly

£950

Yield

8.77%

Verdict

Derived from HomePortfolio scores

12 Derwent Close earns an INVESTIGATE rating with HP Score 78/100. Investment score 76/100 reflects strong fundamentals. Crime intensity is low. Walkability is limited (64/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is freehold. 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 covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

78/ 100

Strong

Investment Score

76/ 100

High

Crime Score

22/ 100

Moderate

Walkability

64/ 100

Moderate

Transit & Bike

Transit 27Bike 56

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Reduced confidence2 independent sourcesListing checked 4 Nov 2026

Fewer independent sources agree, or a component could not be scored.

Valuation edge0/15
claims [AVM +2.3% (HIGH), sold-comps -16.1%, £/sqft -16.1%] → 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 13 Oct 2026
- valuation_snapshotsestimate for 100110457613· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 7 comps, dispersion 8.2%· as of 5 Nov 2026
Rental economics29.8/40
gross yield 8.8%; range width penalty ×0.99
- valuation_snapshotsrent estimate 950/mo (range 900-1000)· as of 13 Oct 2026· verify before relying on this
Stress margin2.1/30
stressed cash flow +20/mo, +2% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); passes the stress
- underwriting_assumptionscosts not disclosed by the advert· as of 4 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 339 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 4 Nov 2026
Risk & liquidity14.7/15
360 sales/12mo in area; valuation range width 10%
- 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 sensitivityScores 70+ up to £97,500

£97,500£149,500

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£130,000

At the asking price

Monthly rent£950/mo

Evidenced range £900-£1,000

Interest rate5.4%

Loan to value75%

Cash required: £40,400
Net cash flow: £219/mo
Cash on cash: 6.5%
Score at this price: 47

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.17 - 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 100110457613Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 7 comps, dispersion 8.2%Valuation edge · as of 5 Nov 2026
valuation_snapshotsrent estimate 950/mo (range 900-1000)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 4 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 4 Nov 2026

Risks

What could kill this deal

Score confidence is reduced
fewer independent sources agree, or a component could not be scored
Rental economics needs verification before you rely on it
rent estimate 950/mo (range 900-1000)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 339 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge

Property risk deep-dive →

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. Ask the agent why the price was reduced and whether a previous sale fell through.
1 price cut(s) recorded on the listing history.
3. Set your walk-away price before viewing - above £97,500 the deal stops scoring well.
Computed by re-running the score at higher prices.
4. 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.

Valuation & Market

Sale Estimate£133,000

Rent Estimate (pcm)£950

Gross Yield8.77%

1y Growth+4.3%

3y Growth+5.7%

5y Growth-0.3%

10y Growth+3.3%

Last Sold Price£89,950 (2005-08-31)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseBelow 40 dB

View Full Risk Report

Planning Activity

Recent Apps

0SR7 7BS

Approval Rate

-12mo

Development

low

DM/26/02751/FPA
Construction of timber shed in rear garden (retrospective).
Pending
DM/26/02645/DRC
Discharge of Conditions 10 (Highway Adoptions Details), 18 (Contamination Verification), and 24 (Tree Planting) pursuant to consent DM/24/03202/FPA.
Pending
DM/26/02663/FPA
Conversion of former bank to mixed use building comprising office (Use Class E) to the ground-floor and short-term respite accommodation for up to two people to the first-floor
Pending

View Planning Timeline

Ownership

Corporate Ownership74.9%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2005-08-31
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

16 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£29,718

Population Density3,931 /km²

Owner Occupied75%

Age Distribution

0-15 12%16-64 59%65+ 29%

View Area Profile

Schools Nearby

St Mary Magdalen's Catholic Primary School
0.2 mi
Inspected as St Mary Magdalen's Roman Catholic Voluntary Aided Primary School, Seaham (URN 114236) on 1 Nov 2017
Seaham Trinity Primary School
0.4 mi
Good
Seaview Primary School
0.7 mi
Good
Seaham High School
0.7 mi
Good

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

View All Schools

Comparables

View All

33 Derwent Close
-
£160k
-
10 Derwent Close
-
£120k
-
53 Derwent Close
-
£115k
-
23 Derwent Close
-
£134k
-

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