101 Delta House, St Andrews Street, Northampton, NN1 2HA

UPRN:15111598Flat/Maisonette1 bedsBuilt 1996-2002

LeaseholdCouncil Tax: Band CEPC: D (66)

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

101 Delta House, St Andrews Street, Northampton, NN1 2HA

HP Score

/ 100

Mixed

Verdict

yesterday

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

Evidence

17 of 21 sources

Sale Estimate

£106,000

£100k - £111kHigh

Estimate

£106k

Range

£100k – £111k

Rent Estimate (pcm)

£500

£500 - £550

Monthly

£500

Yield

6.32%

Verdict

Derived from HomePortfolio scores

101 Delta House earns an INVESTIGATE rating with HP Score 66/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (90/100). 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 NationsMarket estimates (third-party AVM)Defra 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

66/ 100

Mixed

Investment Score

67/ 100

Moderate

Crime Score

69/ 100

Elevated

Walkability

90/ 100

Excellent

Transit & Bike

Transit 46Bike 67

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceListing checked 13 Nov 2026

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

Valuation edge2.5/15
claims [AVM +10.4% (HIGH), sold-comps +6.9%, £/sqft +7.0%] → measured edge +0.50pp 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 15111598· as of 9 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 24.2%· as of 9 Nov 2026
Rental economics10.5/40
gross yield 6.3%; range width penalty ×1.00
- valuation_snapshotsrent estimate 500/mo (range 500-550)· as of 9 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -394/mo, -79% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing
- listing_factsservice charge / ground rent from the advert· as of 13 Nov 2026
Seller motivationNot scored
context, not scored: 2 price cut(s), unknown 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 13 Nov 2026
Risk & liquidity14.6/15
342 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 sensitivity

£71,000£109,000

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£95,000

At the asking price

Monthly rent£500/mo

Evidenced range £500-£550

Interest rate5.4%

Loan to value75%

Cash required: £29,800
Net cash flow: £26/mo
Cash on cash: 1.0%
Score at this price: 28

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.56 - 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 15111598Valuation edge · as of 9 Nov 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 24.2%Valuation edge · as of 9 Nov 2026
valuation_snapshotsrent estimate 500/mo (range 500-550)Rental economics · as of 9 Nov 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advertStress margin · as of 13 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 13 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 500/mo (range 500-550)
Seller motivation could not be scored
context, not scored: 2 price cut(s), unknown 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.
2 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£106,000

Rent Estimate (pcm)£500

Gross Yield6.32%

1y Growth-

3y Growth-0.1%

5y Growth+0.7%

10y Growth+3.2%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0NN1 2HA

Approval Rate

-12mo

Development

low

2026/4520/COND
Discharge of Conditions 3 [Walls/Roof Materials, 4 [External Materials], 5 [Brick Sample], 6 [Painted Brick], 7 [Window Details], 8 [Cycles], 10 [CTMP], 11 [Waste], 14 [Noise Assessment], 15 [CMP] and 18 [Ecology] of Planning Permission 2025/0953/FULL [Remodelling and upward extension to upper level building façade along Gold Street and creation of third floor on vacant flat roof for the provision of 14 self-contained residential apartments (Use Class C3). at First And Second, Brix Building Solutions Ltd, 34 Gold Street, Northampton, NN1 1RS]
Pending
2026/4417/TCA
Works to Sycamore tree within a conservation area
Pending
2026/4064/PA
To determine if Prior Approval required [under Schedule 2, Part 3, Class MA of the above order] for the conversion of the Upper floors from offices to one 3x bed residential flat
Pending

View Planning Timeline

Ownership

Corporate Ownership65.4%
Overseas OwnershipNo
Lease Term Remaining105 yrs
CovenantsNone
Lease TypeLeasehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

15 Mbps

Mobile 4G/5G Coverage

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£33,059

Population Density5,742 /km²

Owner Occupied11%

Age Distribution

0-15 25%16-64 70%65+ 5%

View Area Profile

Schools Nearby

Spring Lane Primary School
0.1 mi
GoodConcerns
New Horizons Academy
0.1 mi
Inspected as The Spires Academy (URN 142926) on 14 Nov 2023
Castle Academy
0.2 mi
Report card2026
Ofsted no longer awards a single overall grade.
Northampton International Academy
0.3 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.

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

View All Schools

Comparables

View All

Delta House St Andrews Street
-
£115k
-
Delta House St Andrews Street
-
£141k
-
Delta House St Andrews Street
-
£118k
-
Delta House St Andrews Street
-
£142k
-

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