Phuket’s New Eco-Condos Promise 11% Returns — But Are They Worth It?

Phuket’s eco push lands in prime property Thailand locations

Phuket has long been a magnet for buyers hunting for a second home or an investment that combines lifestyle and rental income. Now a British developer with a strong sustainability record is targeting that appetite. The Zero, founded in London in 2019, has launched two eco-smart residential projects on Phuket that aim to marry British construction standards with low-impact design—and headline a projected circa 11% annual ROI and up to 25% capital growth.

Right away, two facts stand out: these are not small plays and they are explicitly pitched at international buyers who care about green credentials and hotel-style services. For anyone tracking the property Thailand market, The Zero’s entry is both an affirmation of Phuket’s continued appeal and a test of whether eco-premiums will translate into stronger returns.

The two developments at a glance

Here are the headline facts that investors and buyers need to know before reading deeper:

• The Zero Bang Tao: 85 residences, single seven-storey building, completion Q1 2027, prices from 4.6 million THB, projected ~11% ROI and up to 25% capital growth. First condominium on Phuket to be single-use plastic free.
• Silhouette by The Zero Phuket: 150 residences (studio to two-bedroom penthouses), beachfront location between Sirinat National Park and Nai Yang Beach, opening Q3 2028, prices from 4.4 million THB, projected ~11% ROI and up to 25% capital growth.
• Both developments are EIA-approved and incorporate solar power, rainwater harvesting and energy-efficient design.
• The Zero’s CEO is Anthony Bygraves MSyI; the company’s prior project Zero London was a sell-out zero-carbon development in the UK.

These numbers and approvals come from The Zero’s public materials and press releases. They offer a clear commercial case, but the detail behind occupancy, management contracts and legal title is where buyers need to focus.

The Zero Bang Tao: boutique, design-led condo near Bang Tao beach

The Zero Bang Tao is positioned inside Phuket’s luxury corridor, a short drive from Bang Tao Beach and many of the island’s high-end amenities. The project’s scale—85 units—suggests a boutique approach rather than a high-density resort.

Key features highlighted by the developer include:

• A single seven-storey building designed to maximise natural light
• Amenity set: pool, gym, gardens, restaurant
• The building will be single-use plastic free, a local first
• Completion planned for Q1 2027

Why this matters for buyers

Smaller buildings can mean lower overall on-site competition for rental guests and a more curated resident mix. The Bang Tao location places units within easy reach of golf courses, beach clubs and upscale retail, which can help upscale holiday-rental yields during the high season. That said, boutique supply also often means tighter management requirements: if occupancy dips, fixed overheads such as maintenance and security are spread across fewer units.

Silhouette by The Zero Phuket: low-density beachfront with hotel-style services

Silhouette is larger at 150 units and sits between Sirinat National Park and Nai Yang Beach, closer to Phuket International Airport than Bang Tao. The developer markets it as an eco-smart beachfront retreat, and the amenities list is long:

• Rooftop pool and bar
• Restaurant and spa
• Gym and kids’ club
• Golf simulator and padel courts
• Co-working spaces and hotel-style management

The developer expects Silhouette to open in Q3 2028, with prices starting from 4.4 million THB.

Why this matters for buyers

Beachfront and airport-adjacent locations tend to attract both short-stay tourists and longer-stay guests, including digital nomads. The hotel-style management offering is aimed at investors that want a hands-off income stream. In our analysis, the viability of that strategy will depend on the management company’s track record, marketing reach and the proportion of units reserved for owner use versus the rental pool.

Sustainability, certifications and social impact: more than marketing copy

What sets these two projects apart from mainstream condo launches is their explicit environmental and social framing. Both developments are EIA-approved, and the published sustainability measures include:

• Solar power integration
• Rainwater harvesting
• Energy-efficient design features
• A firm-wide pledge to reduce single-use plastics (Bang Tao claims to be the island’s first plastic-free condo)

The Zero also links development to long-term social contributions via its support of the Asia Center Foundation, which works with underprivileged children.

From a buyer’s perspective, green features can do three things:

• Lower ongoing utility and operating costs if systems are installed and maintained correctly
• Broaden the marketing appeal to a growing segment of eco-conscious travellers and owners
• Provide PR and award opportunities that boost perceived prestige; The Zero Bang Tao won Best Sustainable Residential Development – Phuket at the Dot Property Thailand Awards 2025

These are real advantages, but sustainability is only as effective as the implementation. Buyers should ask for third-party verification of energy savings, water yield estimates from rainwater systems, and post-handover performance guarantees.

The investment case: headline returns and the mechanics behind them

The developer projects circa 11% annual ROI and up to 25% capital growth for both projects. Those are headline numbers you will see in sales brochures; here is how to think about them practically.

What drives rental yield on Phuket property:

• Location and accessibility: proximity to beaches, airport and services matters
• Product quality and amenities: modern, well-run properties attract higher nightly rates
• Seasonality: Phuket has a pronounced high season and low season
• Marketing and management: hotel-style operations can lift occupancy if they reach global distribution channels

Costs and variables that will reduce net returns:

• Management fees and marketing commissions
• Maintenance, sinking funds and utilities
• Periods of low occupancy
• Exchange-rate volatility for international owners

We view the developer’s ~11% ROI as achievable in a strong recovery scenario where tourism remains buoyant and management is effective. But that outcome assumes relatively high average occupancy and day rates.