In a city built with Lego, building a Lego skyscraper can be tricky.

It takes years of planning, extensive training and, eventually, a lot of money.

Here’s how to get started.

1.

Find an architect The first step is to find an architect who’s interested in building a new London skyscrapers.

London is a small, dense city, with a population of about 2.6 million.

In 2017, the city announced a $300 million plan to build up to 20 new skyscrapes.

Some of those are being built at an estimated cost of $2.5 billion.

You’ll also want to contact the local authority, the mayor or the planning minister before you decide which architects you want to choose.

The city is also considering using public-private partnerships to build towers of various sizes and heights, said a spokesperson.

2.

Pick the right architects The first rule of architecture is that it’s not about what kind of building you’re building, but about how you build it.

That’s why you need to have an architecture school or architecture firm in your area.

If you want an architect to build the next-generation skyscraper in your neighborhood, look for architects with expertise in urban planning, sustainability, design, public health and environmental concerns.

There are many more things you need a firm to do, too.

3.

Pick an architect’s price You need to look for a price that’s reasonable, said Robert Haddad, an architecture professor at the University of California, Santa Barbara, who specializes in building and urban design.

“You need to know that you’re paying for something that’s not going to cost you anything in the future,” he said.

So you can look at the price tag on your building, and determine whether it’s worth it.

“I don’t know that anyone is going to spend a lot more money than they are right now,” he added.

4.

Choose a design You may want to start with a design that has a “green footprint,” meaning that you don’t use more than 25 percent of your building’s energy.

“A lot of the energy is used for the facade, the roof, the exterior wall, the windows and the roof.

If it’s a building that you’d like to use more energy for, go with the green roof,” Haddid said.

5.

Design it with a mix of materials The next step is deciding what materials you want in your building.

“What materials you need, the building materials, the materials you’re going to be using to make the building, you have to be able to choose the building material that you want,” Haddon said.

The key is that the materials should be made of different materials, such as wood, steel and concrete, he said, and should also be made in different temperatures and pressures.

If the building is going be used as a home, you may want something with a minimum of structural strength, so it doesn’t collapse in a disaster.

But if you’re designing a hotel, a hotel should be able hold up to 15 percent more weight than it would if you built it from scratch.

You also need to weigh your materials carefully, so you know what your building will be used for.

6.

Plan your building before the building opens The first stage of your design is planning your building in advance.

“That’s why I like to put my architects and engineers and the materials department in charge of that, to make sure they know exactly what they’re doing,” HADDAD said.

Then you should start designing.

The architects need to determine what the building will look like when it opens, HADDID said.

That means you need an initial estimate of the building’s size.

“The best way to do that is to have a team that’s looking at every building that’s going to open in the next two to three years,” he explained.

This way, you can know how large the building needs to be, and you can design the building to hold that size, he added, adding that he thinks that is the best way of going about building a skyscraper.

7.

Set your price You’ll want to negotiate a price, Hadd said, so that you know how much the building should cost.

“Once you have a price set, then you can start to negotiate,” he continued.

The final step is the building itself.

The biggest hurdle in building your own building is figuring out how to balance costs with benefits, said Jason Condon, the managing partner at Condon & Partners, who has been designing buildings in New York City for 20 years.

“We are looking at building as a process, rather than as a fixed project,” he told The Salt.

“There is a lot to think about.”

8.

Choose the right materials If you’re planning to build an office tower, Condon recommends using the same materials as a typical office building, such a steel-framed building.

But you may need to make some changes