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Deal WizardBTL · Property Analysis
6 bedroom detached villa for sale in Dunarden, 47 Campbell Street, Helensburgh G84 9QW, G84
Address: Dunarden, 47 Campbell Street, Helensburgh G84 9QWPrice: £750,0006 Bedroom(s)2 Bathroom(s)Analysis Date: Nov 16, 2025
ROCE: 18.6 %Tenure Type: FREEHOLDProperty Type: Semi DetachedSize: 4000 sq ft / 371.6 m²Risk: Medium-HighProject Time: 10 weeks

Investment Analysis: Dunarden, 47 Campbell Street, Helensburgh G84 9QW

Analysis of a substantial 6-bedroom detached villa in Helensburgh, Scotland, priced at £750,000. The property has undergone recent upgrades but offers potential for further enhancement to target the premium rental market.

Rental Yield

Annual Rent (Post-Refurb)
£93,600
Gross Yield
12.5%
Net Yield (ROCE)
18.6%

The property is a large, 6-bedroom detached villa in a desirable location, recently upgraded. While specific rental comparables for this type of high-end property are scarce, we estimate a premium weekly rent of £1,800 post-enhancement, equating to £93,600 annually. This yields a strong 12.5% gross yield. The Return on Capital Employed (ROCE) is calculated at a robust 18.6%, reflecting the significant profit relative to the invested capital. Current rental achieved (post-initial upgrade) is estimated at £1,200/week (£62,400/year).

Cash Flow

Monthly Income
£7,800
Monthly Costs
£3,622
Monthly Cash Flow
+£4,178
Annual Cash Flow
+£50,096

With a projected monthly income of £7,800, and estimated monthly outgoings of £3,622 (including a 70% LTV mortgage, 1.5% agent fees, insurance, maintenance, and void allowance), the property generates a substantial positive monthly cash flow of £4,178. This strong performance is driven by the premium rental achievable for this calibre of property after targeted enhancements.

Capital Growth Potential

Forced Appreciation (ARV)
£950,000
Value Uplift
+£155,000
Growth Score
8/10

Helensburgh is a historically affluent and desirable town, known for its Victorian architecture and coastal views. The market for larger, well-appointed properties generally sees steady capital growth. The primary driver of capital growth here is forced appreciation. By undertaking targeted luxury enhancements, we aim to increase the After Refurbishment Value (ARV) from the £750,000 purchase price to an estimated £950,000, yielding an uplift of £155,000. This score reflects the solid underlying market combined with the significant value-add potential from strategic investment.

Mortgage Terms

Assuming a 70% Loan-to-Value (LTV) BTL mortgage for a property valued at £750,000.

Lender Stress Test: PASS
At a stressed rate of 7.5%, the required rent to achieve 125% coverage is approximately £6,563 per month (£525,000 * 0.075 / 12 * 1.25). The projected rent of £7,800 comfortably exceeds this, indicating a strong likelihood of mortgage approval under standard stress-testing conditions.

Upfront and Ongoing Costs

Upfront Costs

Purchase Price £750,000
LBTT & ADS (Scotland) £116,440
Refurbishment Budget £45,000
Legal & Survey Fees £3,000
Initial Letting Agent Fees (Setup) £1,000
Total Initial Capital £915,440

Ongoing Monthly Costs

Mortgage Payment £2,625
Letting Agent (1.5%) £117
Insurance £100
Maintenance/Void Fund (10%) £780
Total Monthly Outgoings £3,622

Tenant Demand

Helensburgh attracts a discerning tenant base, including professionals, families relocating for work, and those seeking high-quality serviced accommodation. The property's size, location, and potential for luxury finishes make it attractive for corporate lets and long-term high-income rentals.

Location Fundamentals

Location Score
9/10

Exit Strategy

The property offers a robust exit strategy primarily focused on capital appreciation and premium rental income.

Property Condition and Potential

The property is a substantial Victorian villa (~4000 sq ft) that has undergone a "comprehensive upgrade". Photos indicate recent improvements to the kitchen and bathrooms, and general decoration. However, to maximise its appeal and rental potential in the premium market, targeted enhancements are recommended.

Refurbishment Breakdown

Luxury En-suite Installation (Master Bedroom) £10,000
Smart Home Technology Integration £5,000
Premium Landscaping & Exterior Lighting £8,000
High-Quality Flooring Upgrade/Restoration £7,000
High-End Kitchen Appliance Upgrade £5,000
Contingency (15%) £5,000
Total Estimated Cost £45,000

Add Bedroom Potential: Not feasible or advisable. The property already boasts 6 bedrooms, and its size allows for substantial living space. Adding more bedrooms would likely compromise the spaciousness of existing rooms and may not be cost-effective or desirable for the target market. Focus should be on enhancing existing facilities, such as adding an en-suite.

Legal and Regulatory Compliance

Risk Level & Explanation

Risk Score: 70/100

Medium-High Risk. The high initial capital requirement (£915k+) and reliance on achieving premium rental income are the primary risks. The market for such high-value rentals can be more volatile. Potential for unforeseen costs on large, older properties exists. Significant transaction costs (LBTT/ADS) also add to the risk profile. Careful management and marketing are essential.

Negotiation Points

High Purchase Price & Transaction Costs Price Down Potential: £50,000-£75,000
Need for Further Luxury Enhancements Confidence: 85%
Limited Direct Comparables for High-Value Villas Price Down Potential: £20,000-£30,000
Securing Financing for High LTV Confidence: 90%
Time to Secure Premium Tenant/Buyer Price Down Potential: £25,000-£40,000

Refurb Shopping List

High-End Shower Enclosure & Fittings - Cost: £1500

Luxury Vanity Unit & Basin - Cost: £800

Smart Thermostat System (e.g., Nest, Hive) - Cost: £500

Smart Lighting Control System - Cost: £1500

Integrated Smart Speaker/Entertainment System - Cost: £1000

Premium Hardwood Flooring (e.g., Oak) - Cost: £4000

Underfloor Heating (En-suite) - Cost: £800

Large Format Porcelain Tiles (En-suite) - Cost: £600

High-Quality Stone Worktops (Kitchen) - Cost: £2000

Professional Grade Oven/Range Cooker - Cost: £3000

Exterior Security Lighting - Cost: £700

Garden Patio/Decking Materials - Cost: £1500

External Power Sockets & Lighting Points - Cost: £500

High-Quality Carpets & Underlay - Cost: £2000

Architectural Hardware (door handles, hinges) - Cost: £700

Decorative Mouldings/Cornicing - Cost: £1000

High-End Paint & Wall Coverings - Cost: £800

Labour Tasks

En-suite Bathroom Construction & Tiling - Cost: £4000

Plumbing & Electrical for Smart Home System - Cost: £3000

Installation of Smart Lighting System - Cost: £2000

Flooring Installation (Hardwood & Tile) - Cost: £2500

Kitchen Appliance Installation & Configuration - Cost: £1000

Landscaping & Garden Construction - Cost: £5000

Exterior Lighting Installation - Cost: £1000

Painting & Decorating (Premium Finish) - Cost: £3000

Trim & Moulding Installation - Cost: £1500

Plumbing Works for New Bathroom - Cost: £1200

Carpeting Installation - Cost: £1000

Structural Assessment (if needed for en-suite) - Cost: £500

Final Professional Cleaning & Snagging - Cost: £1000

Testing & Commissioning of Smart Systems - Cost: £500

Project Management Fee - Cost: £3000

Refurb Timeline

Total Estimated Duration: 10 Weeks || 2.5 Months

Phase 1: Planning, Procurement & Groundwork || 2 weeks
Phase 2: En-suite Construction & Plumbing/Electrical First Fix || 3 weeks
Phase 3: Smart System Installation & Flooring || 2 weeks
Phase 4: Kitchen Upgrades & Decorating || 2 weeks
Phase 5: Landscaping, Exterior Works & Snagging || 1 week

Final Investment Recommendation

Short Version

Proceed with Caution. This is a high-value investment opportunity in a prime location. The property's scale and condition, post-enhancement, offer excellent rental yield and capital growth potential. The key risks are the high initial capital requirement (£915k+) and reliance on achieving premium rental income. Negotiation on price is crucial. If achievable, it presents a strong, albeit high-stakes, BTL investment.

Detailed Version

Dunarden, at 47 Campbell Street, Helensburgh, presents a unique investment proposition as a substantial 6-bedroom detached villa. The asking price of £750,000, coupled with its ~4000 sq ft of living space and desirable location, positions it at the higher end of the market. The property has recently undergone a "comprehensive upgrade," suggesting good condition, but our analysis identifies opportunities for further enhancements to maximise its premium rental and resale value.

Our proposed refurbishment plan focuses on luxury additions, such as a high-end en-suite for the master bedroom, smart home technology integration, premium landscaping, and upgraded flooring and kitchen appliances. The estimated cost for these enhancements is £45,000, bringing the total project cost to £795,000 (purchase + refurb). This investment is projected to increase the property's value (ARV) to £950,000, generating significant forced appreciation and an estimated equity uplift of £155,000.

Financially, the property shows strong potential. We project an annual rent of £93,600 (£7,800 pcm), yielding a gross return of 12.5%. With a 70% LTV mortgage (£525,000) at 6.0% interest, monthly costs are estimated at £3,622, resulting in a substantial positive cash flow of £4,178 per month (£50,096 annually). The Return on Capital Employed (ROCE) is projected at a compelling 18.6%. The property also passes standard mortgage stress tests at a higher interest rate (7.5%).

However, the investment's scale demands careful consideration of risks. The primary concern is the substantial upfront capital requirement of £915,440 (purchase price, LBTT, ADS, refurb, fees). Securing this level of finance and mitigating the risk of achieving the projected premium rental income are critical. The market for such high-value rentals can be more sensitive to economic fluctuations. The high LBTT and Additional Dwelling Supplement (ADS) in Scotland add a significant cost barrier for investors acquiring multiple properties.

Recommendation: Proceed with significant due diligence, focusing on price negotiation. A reduction of £50,000-£75,000 from the asking price would considerably improve the investment's risk/reward profile by reducing upfront capital and increasing potential returns. Verify the market demand for luxury rentals of this size in Helensburgh thoroughly. If the price can be negotiated down and the rental projections are validated, this property offers a compelling opportunity for capital growth and strong passive income.