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Search homes new builds in TR21. New listings are added daily by local developer agents.
Three bedroom properties represent a significant portion of the TR21 housing market, offering space for families with multiple reception rooms and gardens in many cases. Browse detached, semi-detached, and terraced options ranging across new residential developments.
£988k
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Source: home.co.uk
Showing 2 results for 3 Bedroom Houses new builds in TR21. The median asking price is £987,500.
Source: home.co.uk
Detached
2 listings
Avg £987,500
Source: home.co.uk
Source: home.co.uk
TR21’s property market has a feel of its own, shaped by island life. homedata.co.uk shows the average sold house price in TR21 currently at £577,500, while home.co.uk reports an overall average price of £474,250 over the last year. The market has softened a little lately, with historical sold prices over the last 12 months running 9% below the previous year and 19% below the 2023 peak of £588,136. For buyers, that can mean a more approachable way into this sought-after area, while the long-term appeal remains tied to the simple fact that island homes are finite.
Detached homes sit at the top end in TR21, averaging around £670,000, which is no surprise given the premium attached to stand-alone homes with sea views and private gardens. Terraced properties, which make up most of the local housing stock according to recent sales data, average about £534,375. Flats on the Isles of Scilly come in at roughly £233,333, and that puts them within reach for first-time buyers or anyone wanting a manageable holiday base. There are no active new-build developments specifically within the TR21 postcode area, so buyers are looking at an established stock of homes, many of them full of history and built from local granite and slate.
The Isles of Scilly market does not behave like a mainland one. Stock is limited, demand stays steady from buyers drawn to island living, and values tend to hold up well over time. Tourism, agriculture and fishing underpin the local economy, so the market is small-scale, but each transaction still matters. We have seen that the better homes rarely linger, and competition can build quickly when something desirable comes up. If a property fits, moving fast is usually sensible.

Life on the Isles of Scilly is a major part of the appeal, and it is what brings many visitors back, then eventually on to permanent residence. St. Mary's, the largest island in the archipelago, is the main centre, with Hugh Town, Hugh Town Beach and its golden sands and clear waters, plus the key local facilities residents rely on. Thanks to the Gulf Stream, the climate is unusually mild, gardens bloom for much of the year, and outdoor time is possible in every season. With no heavy industry and little traffic congestion, the islands offer a calm that mainland living often struggles to match.
For such a small population, the community on the Isles of Scilly is strikingly varied. Long-standing island families live alongside newcomers who have fallen for the archipelago and chosen to stay for good. The result is a welcoming place, where new arrivals are usually folded into community life rather than left on the edge of it. Throughout the year there are cultural events, from the well-known Tresco Abbey Garden's flower festival, which attracts horticulture fans from around the world, to smaller music and arts gatherings that highlight local talent. Summer tourism still drives much of the economy, with visitors coming for sub-tropical gardens, clean beaches and wildlife watching, including puffins, seals and rare seabirds nesting on the cliffs.
St. Mary's covers the essentials for day-to-day living. Around Hugh Town you will find shops, cafes and restaurants, among them the popular Mallerymore restaurant and a number of pubs serving fresh local seafood. The Co-op handles the weekly shop, and local producers sell fish, vegetables and artisanal goods at different points across the island. There is a small hospital and a dental practice, while education comes through the islands' primary and secondary schools. For evenings out, residents have a cinema, pubs with live music and regular community events that keep the calendar ticking along.

Education on the Isles of Scilly is small in scale, but it works hard for the local community despite the remoteness. On St. Mary's, the main primary school is The Five Islands School, which teaches children from reception through to Year 6. It is the main option for families on the island, with satellite facilities on some of the outer islands for younger children. The school keeps close ties with the community and builds its curriculum around the islands themselves, with marine biology and coastal ecology benefiting from the exceptional natural surroundings.
For older pupils, The Five Islands School also provides secondary education up to GCSE level on St. Mary's. Anyone needing A-levels usually has to head to the mainland, and many families choose boarding in Cornwall or elsewhere for those final years. That distance to mainland colleges is an important part of the decision for families with teenagers, though many see it as a fair trade for the independence and adaptability it gives young people.
The smaller outer islands, including Tresco, Bryher and St. Martin's, each have small school arrangements for younger children, so families do not have to move to St. Mary's just to access early education. These satellite schools stay closely linked to the main school on St. Mary's and use technology to join up students across the islands for certain lessons and activities. For anyone thinking about TR21, the schooling sits well with island life and the close community values that define this part of Britain, though post-GCSE arrangements still need proper thought.

Travel to and from the Isles of Scilly is mainly by two routes, the Skybus aircraft from Land's End, Newquay and Exeter airports, or the traditional ferry from Penzance. During peak season, Skybus runs multiple flights each day, then cuts back in winter. The flight from Land's End to St. Mary's takes around 15 minutes, giving wide views across the archipelago and making the islands far more accessible than many people expect. We are often told buyers are surprised by just how connected the islands feel, especially for work, where the short hop to Land's End can make day trips to Bristol or London entirely realistic.
Getting about once you are there usually means a mix of hire vehicles, bicycles and the local bus service. St. Mary's is compact enough to explore by bike, and Hugh Town has several hire shops offering standard and electric bikes. Car hire is also available on St. Mary's, although plenty of residents opt for walking or cycling because it is easier and suits the island's scale. For trips between islands, the local ferry service links St. Mary's with Tresco, Bryher, St. Martin's and the Eastern Isles on a regular timetable through the year, so you can still get around all the islands without owning a boat.
For most residents, daily commuting from the Isles of Scilly to mainland Cornwall or further afield is not realistic, so the islands suit people who work remotely or who are retired. Still, the air and ferry links are dependable enough to make business trips to London, Bristol or other major centres possible as day trips if plans are made in advance. In that sense, the remoteness becomes part of the attraction. Many residents value the clean break it creates between work and home, and the distance from mainland pressures is exactly what they want.

We suggest starting with our listings of properties for sale in TR21. A clear grasp of the local market, from recent sale prices to the kinds of homes available, will help you set expectations that fit reality and spot the stronger opportunities. This is not a mainland market with a long, steady stock flow, it has limited supply and a distinct seasonal pattern to buyer interest. A visit to the islands is well worth making before you commit.
It is wise to sort a mortgage agreement in principle before the serious search begins. Island homes can be unusual in their construction, so some lenders may set out specific requirements for non-standard properties. Getting the finance side in order early keeps the purchase process moving when the right home appears, and a Decision in Principle can also give you a stronger hand if the property is competitive.
Once you have a shortlist, arrange viewings for the properties that fit. Remember the logistics of getting to the Isles of Scilly, and think about staying on the islands for a few days so you can get a proper sense of day-to-day life. Explore more than one area of St. Mary's if you can, and visit the outer islands as well, because each community feels slightly different. Many buyers make several trips before they settle on the right home, and we can help with the viewing arrangements.
Before you go through with the purchase, book a thorough property survey. Many homes in the Isles of Scilly are older, with traditional granite walls, slate roofs and lime-based renders, so a detailed survey is important for spotting defects or maintenance issues. That matters even more for granite cottages and period homes, where damp, timber decay or coastal exposure can all be part of the picture. We can put you in touch with surveyors who know island properties well.
A solicitor with experience of island transactions is worth choosing. They will deal with the legal side of your purchase, including searches for flood risk, coastal erosion and any planning restrictions that apply in this particular setting. If you are thinking about renovations or extensions, they can advise on the permissions needed from the local planning authority. Some homes are listed buildings too, which brings extra rules on maintenance and alterations. The conveyancing can take longer as documents travel between the mainland and the islands.
As soon as the legal work is complete and the mortgage is in place, completion can go ahead. From there, it is a matter of arranging the keys and planning the move to the Isles of Scilly. Household goods need careful coordination with the transport services, because ferry and air freight both have a role to play. The ferry can take vehicles and larger items, while smaller shipments go by air. For many buyers, the move becomes part of the story rather than a chore, and the logistics only add to the sense of island living.
Buying on the Isles of Scilly means thinking through a few issues that are specific to island life. Because the archipelago sits on the coast, flood risk needs to be taken seriously for any property under consideration. Our research shows that TR21 is inherently exposed to coastal flood risk because of its island setting, and that should feed into both your decision and your buildings insurance. We would also suggest discussing flood risk directly with surveyors during the assessment stage, since coastal flooding can vary from one part of an island to another depending on height and exposure.
The age and make-up of many Isles of Scilly homes deserve close attention during the survey. Traditional construction is common, with local granite stone walls, slate roofing and lime-based renders that are part of the islands' architectural character. These homes have plenty of charm, but they can also need more upkeep than newer builds. In older properties, damp penetration through stone walls, slate roof deterioration, timber rot in floor joists exposed to damp, and outdated plumbing and electrical systems all turn up from time to time. Our inspectors know these building methods well and can spot problems that less experienced surveyors might miss.
Many properties on the Isles of Scilly are affected by planning restrictions and conservation designations, which reflects the islands' historical and environmental value. Parts of St. Mary's and other areas across the Isles of Scilly sit within conservation areas, and a good number of homes are listed buildings because of their architectural and historical importance. Anyone planning renovations or extensions should speak with the local planning authority first to find out what permission is needed. The premium that comes with island living also means service charges and maintenance costs for flats or leasehold homes deserve a close look before you commit, because they can vary a great deal depending on the property and its upkeep.

homedata.co.uk puts the average sold house price in TR21 at £577,500, while home.co.uk reports an overall average price of £474,250 over the past year. Prices have eased recently, with sold values 9% below the previous year and 19% below the 2023 peak of £588,136. Detached homes average around £670,000, terraced properties usually sell for about £534,375, and flats sit nearer £233,333. That correction may open a window for buyers who have been waiting, although the limited supply of island homes has historically helped values remain resilient.
Council tax on the Isles of Scilly falls under Cornwall Council's jurisdiction, even though the islands are a separate unitary authority area. In TR21, the council tax bands follow the same system used across England, from Band A for the lowest valued homes through to Band H for the most expensive. The exact band depends on the property's valuation, so buyers should check it with the estate agent or during conveyancing. Because the islands are small and remote, council tax can work out as higher proportionally than mainland equivalents, helping to cover island-based services.
The Five Islands School provides both primary and secondary education on St. Mary's. It teaches children from reception through to GCSE level and has strong links with the local community, backed by small class sizes and teaching staff who know the pupils well. For A-levels, students generally head to mainland Cornwall, with many boarding in Truro, Falmouth or elsewhere. The outer islands also have satellite school provision for younger children, so families can live on Tresco, Bryher or St. Martin's and still have early years education within reach.
Skybus flights link the Isles of Scilly with Land's End, Newquay and Exeter airports, and the journey to St. Mary's takes about 15 minutes with wide views over the archipelago along the way. The ferry from Penzance takes around 2 hours and 45 minutes and carries vehicles, which makes it the practical option for moving belongings to the islands. Once you are there, people get around by hire cars, bicycles and the local bus service on St. Mary's. For trips between islands, the ferry network connects St. Mary's with Tresco, Bryher, St. Martin's and the Eastern Isles on a regular timetable throughout the year.
For investors looking for something outside the usual market, the Isles of Scilly has several strengths. There are no new-build developments in the postcode, so demand for existing homes stays steady, supported by tourism and the constant interest in holiday lets. Limited supply has helped prices stay resilient over time, though anyone buying for income should think about the seasonal shape of tourism, the practicalities of managing property on remote islands and the need for specialist coastal insurance. Holiday lets can command premium rates from May to September, but maintenance trips and other management costs are higher than on the mainland.
Stamp Duty Land Tax in TR21 follows the normal UK residential thresholds in England. There is no SDLT on the first £250,000 of value, 5% on the part between £250,001 and £925,000, 10% on the part between £925,001 and £1.5 million, and 12% on anything over £1.5 million. First-time buyers get relief on the first £425,000, with 5% between £425,001 and £625,000. At the current average price of £474,250, a standard buyer would pay about £11,213 in stamp duty, while a first-time buyer would pay nothing on the first £425,000.
Because the Isles of Scilly matter so much historically and environmentally, parts of St. Mary's, Hugh Town and the surrounding coastline are covered by conservation area designations. Across the islands, many traditional granite cottages and period homes are listed buildings because of their architectural and historical value. Anyone buying for renovation or extension needs to remember that listed building consent may be required for alterations, and the planning authority will have particular requirements on materials and methods to protect the islands' traditional character. A RICS Level 3 Building Survey may suit listed properties better than a Level 2, given their complexity and specialist needs.
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Getting the full cost picture is vital when buying in TR21. On top of the purchase price, buyers should allow for Stamp Duty Land Tax, which for residential property in England sits at 0% on the first £250,000, 5% on the portion from £250,001 to £925,000, 10% on the portion from £925,001 to £1.5 million, and 12% above £1.5 million. For a typical home in the Isles of Scilly at the current average price of £474,250, a standard buyer would face SDLT of around £11,213, while first-time buyers pay nothing on the first £425,000 of value.
There are other costs to plan for as well. Solicitor fees for conveyancing usually fall between £500 and £1,500, depending on how complex the transaction is and whether listed building issues or unusual title arrangements are involved. Survey costs should be included too, with RICS Level 2 Home Surveys normally ranging from £400 to £800 for standard homes, but often higher for larger, older or non-standard properties like those common on the islands. Because so many homes in TR21 are traditional and older, a detailed survey is especially sensible, and we strongly recommend a surveyor who knows traditional island construction methods.
If you are buying with a mortgage, arrangement fees usually sit somewhere between £0 and £2,000 depending on the lender and product, and valuation fees may also be charged, although lenders often fold these into the arrangement fee. Buildings insurance is essential for island homes and can cost more than mainland cover because of coastal flood risk exposure and the greater expense of rebuilding traditional granite construction. Removal costs should also cover transport of belongings by ferry service or air freight, which can be more expensive than a standard mainland move. As a rule, buyers should set aside an extra 3-5% of the purchase price for these related costs when working out the total moving budget.

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