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Deal WizardHMO · Property Analysis
Allandale, Thundersley SS7, 3 bed semi-detached house for sale, £450,000 - Zoopla
Address: Allandale, Thundersley SS7Price: £450,0003 Bedroom(s)1 Bathroom(s)Analysis Date: Apr 14, 2026
ROCE: 25.3 %Tenure Type: FREEHOLDProperty Type: Semi DetachedEPC band: CCouncil Tax Band: DSize: 883 sq ft / 82 m²Risk: MediumProject Time: 10 weeks

HMO Investment Analysis

Subject Property: Allandale, Thundersley, SS7

Executive Summary

This 3-bed semi-detached property offers a high-value opportunity to convert into a 5-bedroom, high-yielding HMO. With an excellent location in Thundersley, solid bones, and large kitchen/diner space, it is prime for professional co-living. The project is highly feasible, provided Article 4 planning risks are mitigated by maintaining an excellent aesthetic standard and high-quality fire safety measures.

Acquisition Overview

Purchase Price
£450,000
Refurb Estimate
£45,000
Down Payment
£40,000
Bank Fee (3%)
£13,500
Total Est. Cost
£510,000

Investment assumes high-end finish to attract top-tier professional tenants.

Projected Rental Income (Post-Refurb)

Est. Room Rent (Avg)
£700 PCM
Total Monthly
£3,500
Annual Gross
£42,000

Market rents in Thundersley/Basildon area for professionally managed HMOs range between £650-£900. £700 is a conservative, achievable figure for a 5-bed setup.

Projected Cashflow & Returns

ROCE
25.3%
Gross Yield
9.3%
Net Yield
5.0%
Monthly Cashflow
£2,108
Calculated based on 75% LTV, interest-only mortgage @ 1% interest rate as per buyer parameters.

Licensing & Compliance

Amenity Standards: The kitchen-diner (approx 21m²) is sufficiently large to act as a communal area. A separate lounge is not strictly mandatory if the communal space meets minimums, but is highly recommended for professional tenants.

Property & Layout Analysis

Bedroom 1 (FF)
Size: 15.6m² (Approx)
Compliant
Bedroom 2 (FF)
Size: 7.3m² (Approx)
Compliant
Bedroom 3 (FF)
Size: 6.7m² (Approx)
Compliant
Bedroom 4 (Attic)
Size: 16.7m² (Approx)
Compliant
Bedroom 5 (GF)
Proposed Partition
Feasible

Capacity & Layout Options:

Option 1
5 Bed HMO
Pass
Option 2
4 Bed HMO
Pass

Recommended Layout: 5-Bed HMO. Sacrifice the lounge, use the large kitchen/diner as the main communal space.

Refurbishment Plan

Scope & Standard:

Full professional HMO conversion. High-end finish required to command £700/room. Priority: Fire safety (FD30s, alarms) and ensuite installation where feasible.

Refurb Breakdown:

Fire Safety (Doors, Alarms, E-Lighting)£8,000
Kitchen & Utility Installation£10,000
Bedroom Partitions & Joinery£6,000
Ensuite/Bathroom Works (x2)£12,000
Decorating & Flooring£5,000
Furnishing (Beds, Desks, etc.)£4,000
Total Estimated Refurbishment Cost£45,000

Shopping List:

Refurbishment Timeline:

Weeks: 10 || Months: 2.5

Phase 1: Strip-out & Structural partition || 2 weeks
Phase 2: First fix electrical/plumbing || 3 weeks
Phase 3: Plastering & Second fix || 3 weeks
Phase 4: Kitchen/Bathrooms & Decor || 2 weeks

Risks & Assumptions

Negotiation Points

Restricted Headroom in Loft
The attic room is listed with restricted headroom. This poses a potential risk to usable floor space for HMO compliance.
Damp Indicators
Check the roof and eaves carefully (Image 12, 13, 14 show exterior roofline). Potential for damp/leaks in loft room requires investigation.
Seller Motivation
Property has been on the market; price offers strong negotiation potential.

Market Value & Demand Analysis

The Thundersley/Basildon rental market is robust, driven by professionals commuting to London (via Rayleigh/Pitsea/Basildon stations) and hospital staff at Basildon University Hospital. Comps show rooms achieving £650-£800+ for high-spec doubles, particularly those with ensuite facilities. The subject property is ideally located near these commuter hubs. Post-refurbishment, the value is expected to uplift significantly as it will shift from a standard 3-bed residential house to a high-yielding, fully compliant commercial-style HMO investment asset. Current comparable data suggests strong demand for professionally finished rooms in this area.

Investment Case Summary

Short Recommendation

Proceed with caution due to planning constraints, but the rental demand is undeniable. Execute as a 5-bed HMO to maximize ROCE.

Detailed Recommendation

This is a solid HMO project. The property provides sufficient footprint to create 5 rentable rooms. By sacrificing the ground floor lounge, you create a dedicated bedroom while leveraging the existing kitchen/diner as the main communal space. The "Loft Room" is a critical asset but must be checked for ceiling height and structural compliance before purchase. Negotiate on the "restricted headroom" mentioned in the listing to reduce the purchase price. The ROCE is strong due to the leveraged cash-on-cash return, but ensure your compliance costs (fire safety) are factored in fully. As a first-time buyer, ensure your broker is aware of the HMO classification to secure appropriate lending. Conduct a thorough damp survey of the roof/loft area prior to exchange.