Hartley Botanic vs Alitex: Premium Glasshouses

As of July 28, 2026, Gabriel Ash is no longer producing or selling new greenhouses. The company's official closure notice says existing orders will be completed, warranties will be honored, and replacement parts and spares will remain available. That changes a three-brand shortlist into two different decisions: Hartley Botanic versus Alitex for a new bespoke project, or a remaining, ex-display, or used Gabriel Ash with its condition and support verified in writing.

Our Gabriel Ash cost and closure guide records the last verified prices and the stop gates for remaining stock. Do not compare those historical prices with a live Hartley or Alitex quote as if all three order books were open.

Hartley Botanic and Alitex sit at the top of the same live market: hand-built aluminium glasshouses, made in Britain, priced bespoke, and built to be owned for 20 years or more. This is not a good-versus-bad question. Both are heirloom-grade, both back the structure for decades, and either will outlast most of the house around it. It is a which-one-fits-you question, and the answer turns on design language, pricing transparency, and whose service reaches you. And since Hartley does not publish prices, we assembled the real dated figures separately in what a Hartley Botanic actually costs.

We don't sell greenhouses, and premium-brand referrals here are flat-fee, named, and disclosed, never auctioned. We save you from buying the wrong one, and at this price the wrong one is usually the brand whose base cost surprised you or whose lead time you did not plan for. Both quote the structure and leave the base to you, which is the line that catches buyers off guard.

Before you fall for either brochure, price the whole project. The glasshouse is the structure only. The masonry base, the site prep, and professional assembly run thousands more, from the real cost of a greenhouse. If you are not certain you need glass at all, weigh glass vs polycarbonate first.

Live Comparison: Hartley Botanic vs Alitex at a Glance

Figures are current to the best available information and worth verifying at write time, since both price bespoke and terms change. Treat the ranges as planning numbers, not quotes.

Compare the Same Project Scope

This table is the decision. A cheaper proposal with three blank rows is not the cheaper project. Build the free Premium Greenhouse Project Brief, then compare the two written quotes against the same responsibilities.

Heritage and Build: A Near Tie at the Top

Both brands do the same core thing at a very high level. Hartley has built greenhouses in England since 1938 and leans on that heritage hard, with a range that spans modern architectural glasshouses and traditional Victorian styling, all hand-built from aluminium and glazed in 4mm toughened safety glass. Alitex is equally a hand-built British aluminium maker, with a design service and a reputation built on precision powder-coated frames.

On raw build quality, this is close to a tie, and you should treat it that way. Both are engineered to withstand severe weather, both use toughened glass, and both are bought by people who expect to keep the greenhouse for decades. The differences that decide it are not "who builds better," they are design language, how the pricing is presented, and the service that reaches your garden.

The National Trust Range: Alitex's Signature

Alitex's clearest distinction is its National Trust collection, a range of glasshouses developed with the Trust and styled after the greenhouses in its historic gardens: the Hidcote, the Tatton, the Scotney. For a buyer who wants a glasshouse with a documented design heritage and a specific classic look, this is a genuine draw, and it comes with the strongest guarantee on offer, lifetime on the NT range. It is the reason many heritage-minded buyers shortlist Alitex first.

Hartley's answer is its own long heritage and a broader spread of modern and period styling, so if your garden wants a contemporary architectural glasshouse rather than a Victorian one, Hartley's range may suit better. Design language is where these two genuinely diverge, so look at the actual model lines against your garden before anything else.

Warranty: Both Long, Alitex Publishes More Detail

Both back the structure for decades, which is what you are paying for. Hartley covers the structure with a roughly 30-year guarantee. Alitex offers 25 years or more on the structure, lifetime on the National Trust range, plus a separate 10-year warranty on standard finishes.

On paper these are both exceptional and neither is a weak point. The practical edge is that Alitex is more explicit about the finish warranty as a separate, stated term, which matters because the powder-coated finish is the part exposed to weather year-round. As always, a long warranty is only as good as the company honoring it and the service that reaches you, so ask both brands who handles a warranty claim in your region and how long a repair actually takes.

Pricing Transparency: Alitex Gives You a Real Anchor

This is a real, practical difference. Hartley does not publish pricing at all: you request a brochure with starting prices, then discuss your project by phone or in person, and the number is bespoke. Alitex prices bespoke work the same way, but its National Trust range carries full published prices on every model page, from £19,500 for the Hidcote to £55,600 for the Ickworth as of August 2026, including VAT, delivery, and installation in mainland England and Wales. That gives you a real anchor before you ever talk to a salesperson. We assembled the full price list, the US figures, and what still lands on top in what an Alitex actually costs.

Neither approach is wrong, but for a buyer who wants to know roughly where they stand before investing hours, Alitex's published examples are the friendlier starting point. Just read them carefully: those numbers are the structure. On both brands, the masonry base and the flooring are not included, so the project number is meaningfully higher than the quoted glasshouse.

The Base Is Extra on Both: Budget It Now

Here is the line that catches premium buyers, and it applies equally to both. The bespoke price you are quoted is the glasshouse. It does not include the masonry base, the site prep, the internal flooring, or in most cases the utility runs, and on an heirloom glasshouse the right base is a brick or block dwarf wall built by a mason, several thousand dollars on its own. Add professional assembly and you are meaningfully past the structure quote.

That is not a knock on either brand, it is how the premium lane works, and it is exactly why the project number matters more than the glasshouse number. Budget the base, the flooring, and the assembly into your figure from the start, using the real cost of a greenhouse and the foundation and base guide, so the quote holds no surprises.

Which One Fits You

Choose Hartley Botanic if you want the longest single heritage in the market, a broad spread of modern and period glasshouse styling, and you are comfortable starting the pricing conversation from a brochure. Its roughly 30-year structural guarantee and 4mm toughened glass are heirloom-grade.

Choose Alitex if you want the National Trust design heritage, the reassurance of published example prices before you engage, and an explicit 10-year finish warranty on top of the long structural cover. For the heritage-minded buyer who likes to know the number up front, it is the friendlier entry.

Either way, both are five-figure projects once the base is in, and both are worth it only for the buyer who wants an heirloom glasshouse and plans to keep it. If your real use is growing rather than showpiece looks, the honest answer may be the mid-market lane in best polycarbonate greenhouses or a Palram/Canopia, which grows the same plants for a fraction of the money. And if what you actually want is a heated room to work in, that is an office pod, not a glasshouse, weighed at backyardoffice.guide. Compare the wider field in best greenhouses and the brand directory.

Frequently Asked Questions

Can I still buy a new Gabriel Ash greenhouse?

No. Gabriel Ash announced that it is no longer producing or selling new greenhouses. Existing orders are being completed, warranties are being honored, and replacement parts remain available. A Gabriel Ash offered now should be treated as remaining, ex-display, or used stock. Get the model, condition, missing parts, delivery scope, and applicable warranty support in writing before paying.

Is Hartley Botanic or Alitex better?

Neither is better across the board, they are two of the finest hand-built aluminium glasshouse makers and both back the structure for decades. Hartley has the longest heritage (England since 1938) and a broad modern-and-period range. Alitex has the National Trust collection, published example pricing, and an explicit 10-year finish warranty. The right choice depends on which design language suits your garden and which brand's service reaches your region.

How much does a Hartley Botanic or Alitex greenhouse cost?

Both are five-figure purchases, and the base is extra on both. Alitex publishes full prices for its National Trust range, £19,500 for the Hidcote up to £55,600 for the Ickworth as of August 2026, including VAT, delivery, and installation in mainland England and Wales, while Hartley quotes from a brochure after a call. On both, the masonry base, flooring, and site prep are additional, so the finished project runs above the list price. The full Alitex ladder and the US Kew Collection figures are in what an Alitex actually costs. Budget the whole project, not the structure alone.

Does the price include the base and foundation?

No, and this is the surprise that catches buyers on both brands. The bespoke quote covers the aluminium glasshouse and its glazing. The masonry base or dwarf wall, the internal flooring, the site prep, and usually the utility runs are separate, and a proper dwarf wall built by a mason is several thousand dollars on its own. Price the base into your figure from the start, using the foundation and base guide.

What warranty do Hartley and Alitex offer?

Both are long. Hartley backs the structure with a roughly 30-year guarantee. Alitex offers 25 years or more on the structure, lifetime on the National Trust range, plus a separate 10-year warranty on standard finishes. Both are exceptional on paper. What matters as much as the term is who honors it in your region and how quickly a repair happens, so ask each brand about local service before you sign.

Do I actually need a glasshouse this expensive?

Only if you want an heirloom greenhouse that lasts decades and looks the part, and you are budgeting the full project including the base. If your real use is seed-starting, propagation, and overwintering, a mid-market polycarbonate greenhouse like a Palram/Canopia or a Yoderbilt grows exactly the same plants for a fraction of the price, and polycarbonate actually insulates better and resists hail. Pay for glass for the looks and the lifespan, not because it grows better plants.

Which is easier to buy from in the US?

Both are British makers that serve overseas buyers, so both involve delivery and installation logistics you should confirm early. Hartley has a long-established US presence, and Alitex sells internationally as well, but at this price you should treat delivery, install, and service coverage as part of the decision, not an afterthought. Ask each brand directly who installs and services in your area and what the lead time is before you commit.

Sources

• Gabriel Ash official closure notice
• Alitex: National Trust greenhouse pricing
• Alitex: Guarantee