16 Forster Street, Gainsborough, DN21 2LL

UPRN:100030950797Semi-Detached House3 bedsBuilt 1930-1949

FreeholdCouncil Tax: Band AEPC: D (64)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· 3mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021Council Tax· 4mo ago

16 Forster Street, Gainsborough, DN21 2LL

HP Score

/ 100

Mixed

Verdict

3 days ago

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

Evidence

19 of 21 sources

Sale Estimate

£125,000

£118k - £131kHigh

Estimate

£125k

Range

£118k – £131k

Rent Estimate (pcm)

£800

£750 - £850

Monthly

£800

Yield

10.67%

Verdict

Derived from HomePortfolio scores

16 Forster Street earns an INVESTIGATE rating with HP Score 55/100. Investment score 55/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is good (84/100). 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 Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

55/ 100

Mixed

Investment Score

55/ 100

Moderate

100

Crime Score

100/ 100

Elevated

Walkability

84/ 100

High

Transit & Bike

Transit 22Bike 52

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 3 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: the estimate sits 28% above the ask. It ranks after every home whose inputs are verified.

Valuation edge0/15
claims [AVM +28.0% (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 Oct 2026
- valuation_snapshotsestimate for 100030950797· as of 9 Oct 2026
Rental economics38/40
gross yield 10.7%; range width penalty ×0.95; the estimate this rent rides on sits 28% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 800/mo (range 750-850)· as of 9 Oct 2026· verify before relying on this
- valuation_snapshotssale estimate 28% above the ask on the same snapshot - verify the rent describes this home· as of 9 Oct 2026· verify before relying on this
Stress margin9.8/30
stressed cash flow +78/mo, +10% 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 3 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 51 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 3 Nov 2026
Risk & liquidity14.6/15
485 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 £76,500

£67,500£103,500

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£90,000

At the asking price

Monthly rent£800/mo

Evidenced range £750-£850

Interest rate5.4%

Loan to value75%

Cash required: £28,300
Net cash flow: £250/mo
Cash on cash: 10.6%
Score at this price: 62

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.63 - 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 100030950797Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 800/mo (range 750-850)Rental economics · as of 9 Oct 2026 · verify before relying on this
valuation_snapshotssale estimate 28% above the ask on the same snapshot - verify the rent describes this homeRental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 3 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 3 Nov 2026

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 800/mo (range 750-850)
Rental economics needs verification before you rely on it
sale estimate 28% above the ask on the same snapshot - verify the rent describes this home

Plan

Before you offer

1. Get two written rental appraisals from local lettings agents.
The market estimate this rent rides on sits far above the asking price, so the rent may describe a different home.
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 £76,500 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£125,000

Rent Estimate (pcm)£800

Gross Yield10.67%

1y Growth-

3y Growth-2.1%

5y Growth+1.1%

10y Growth+2.2%

Last Sold Price£100,000 (2021-10-04)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0DN21 2LL

Approval Rate

-12mo

Development

low

151400
Request for confirmation of compliance with condition 1 (commencement of works) of planning permission WL/2024/00817 granted 24 December 2024.
Pending
151427
Request for confirmation of compliance with condition 2 (methodology) of listed building consent WL/2025/01087 granted 11 February 2026.
Pending
151378
Application for non-material amendment to planning permission WL/2024/00689 granted 13 December 2024 - location of bin storage areas for the flats.
Approved

View Planning Timeline

Ownership

Corporate Ownership72.2%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2021-10-04
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£30,741

Population Density3,832 /km²

Owner Occupied37%

Age Distribution

0-15 19%16-64 63%65+ 18%

View Area Profile

Schools Nearby

Castles Education
0.0 mi
Inspected by ISI
The Gainsborough Parish Church Primary School
0.1 mi
Report card2026
Ofsted no longer awards a single overall grade.
Handel House Preparatory School
0.3 mi
Inspected by ISI
Mercer's Wood Academy
0.3 mi
Good

2 of 8 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

13 Forster Street
-
£130k
-
33 Forster Street
-
£124k
-
40 Forster Street
-
£125k
-
29 Forster Street
-
£123k
-

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