17 Marlborough Street, Gainsborough, DN21 1BT

UPRN:100030954030Mid Terrace House2 bedsBuilt 1900-1929

FreeholdCouncil Tax: Band AEPC: E (53)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 6mo agoRisk· 5mo agoCrime· freshConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

17 Marlborough Street, Gainsborough, DN21 1BT

HP Score

/ 100

Mixed

Verdict

2 days ago

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

Evidence

19 of 21 sources

Sale Estimate

£74,000

£70k - £78kHigh

Estimate

£74k

Range

£70k – £78k

Rent Estimate (pcm)

£500

£500 - £550

Monthly

£500

Yield

8.57%

Verdict

Derived from HomePortfolio scores

17 Marlborough Street earns an INVESTIGATE rating with HP Score 58/100. Investment score 57/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is good (75/100). 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

58/ 100

Mixed

Investment Score

57/ 100

Moderate

Crime Score

75/ 100

Elevated

Walkability

75/ 100

High

Transit & Bike

Transit 24Bike 62

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceListing checked 10 Nov 2026

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

Valuation edge0/15
claims [AVM +5.4% (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 12 Oct 2026
- valuation_snapshotsestimate for 100030954030· as of 12 Oct 2026
Rental economics28.6/40
gross yield 8.6%; range width penalty ×1.00
- valuation_snapshotsrent estimate 500/mo (range 500-550)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -58/mo, -12% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing
- underwriting_assumptionscosts not disclosed by the advert· as of 10 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 154 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
485 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

£52,500£80,500

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£70,000

At the asking price

Monthly rent£500/mo

Evidenced range £500-£550

Interest rate5.4%

Loan to value75%

Cash required: £22,300
Net cash flow: £110/mo
Cash on cash: 5.9%
Score at this price: 43

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.12 - 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 100030954030Valuation edge · as of 12 Oct 2026
valuation_snapshotsrent estimate 500/mo (range 500-550)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 10 Nov 2026
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 500/mo (range 500-550)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 154 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. 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.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£74,000

Rent Estimate (pcm)£500

Gross Yield8.57%

1y Growth-

3y Growth-2.1%

5y Growth+1.1%

10y Growth+2.2%

Last Sold Price£50,000 (2016-01-22)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0DN21 1BT

Approval Rate

-12mo

Development

low

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
151371
Planning application for the change of use from night club to place of worship and community use.
Pending

View Planning Timeline

Ownership

Corporate Ownership72.4%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2016-01-22
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 Density5,354 /km²

Owner Occupied30%

Age Distribution

0-15 16%16-64 73%65+ 11%

View Area Profile

Schools Nearby

Benjamin Adlard Primary School
0.4 mi
Report card2026
Ofsted no longer awards a single overall grade.
Warren Wood - A Specialist Academy
0.5 mi
Report card2026
Ofsted no longer awards a single overall grade.
The Gainsborough Parish Church Primary School
0.6 mi
Report card2026
Ofsted no longer awards a single overall grade.
The Gainsborough Hillcrest Early Years Academy
0.7 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.

2 of 9 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

27 Marlborough Street
-
£54k
-
39 Marlborough Street
-
£74k
-
47 Marlborough Street
-
£60k
-
23 Marlborough Street
-
£85k
-

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