TOKYO BUYING TIPS
Tokyo Realty Buyer’s Guide
A smart guide to buying land and building a house in Japan
Buying land and building your own house can be one of the best ways to get exactly the home you want. But the order matters. The land, the road, the planning rules, the builder and the design all need to work together before you commit to the site.
Start with the essentialsAt a glance
The first things to understand
A good piece of land is not simply a plot in the right neighbourhood. It has to support the house you actually want to build.
Start with the house you want
Before buying land, decide roughly how much floor area, parking, garden, number of floors and room layout you need. That gives you something real to test the land against.
Check the road first
Road classification, width, frontage and setbacks can affect how much of the site can actually be used and what can be built there.
Know the planning limits
Building coverage, floor-area ratio, height limits, fire rules and local planning controls all shape the maximum building envelope.
Budget beyond the land price
Demolition, ground improvement, utility connections, retaining walls, design fees, permits and landscaping can materially change the total cost.
Choose the builder carefully
Housemakers, architects and local builders work in different ways. The right team depends on how much design freedom, budget certainty and project management you want.
Allow more time than you think
Land purchase, design, surveys, finance, approvals and construction all take time. A new-build project should be treated as a process rather than a single property purchase.
Already found a piece of land?
Send Paul & Yuuki the listing before you make an offer and we can help
identify the questions worth checking with the agent, builder and local authorities.
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The land itself
The site has to work before the house can
The legal status of the land and the physical shape of the site can be just as important as the location.
Road frontage and access
Building Site
Road
Neighbouring Property
In general, a building site needs sufficient frontage on a legally recognised road. The road type, width and exact point where the site meets the road should be checked before assuming that a normal new house can be built.
A narrow road can also trigger a setback, reducing the effective site area. Even where rebuilding is legally possible, a difficult road can affect vehicle access, construction logistics and the type of house that is practical.
Six site questions worth asking
Are the boundaries confirmed?
Check boundary markers, survey status and whether there are any encroachments.
Is a road setback required?
A narrow road may mean part of the site cannot be used for the future building.
Is the site flat?
Slopes, level differences and retaining walls can have a large effect on build cost.
Are utilities already connected?
Water, sewer, gas and electricity may require new connections or upgrades.
Is demolition required?
An old house or structure may need to be demolished before construction starts.
How easy is construction access?
Narrow roads and tight sites can make cranes, concrete trucks and material deliveries more difficult.
Important:
A large land area does not automatically mean a large house. The usable building
envelope depends on road access, setbacks, zoning, building coverage, floor-area
ratio, height controls, fire regulations and the shape of the site.
Design first, then land
Reverse the normal way people search
Many buyers search for land first and only later ask what kind of house will fit. A safer approach is to define the house first, then search for land capable of supporting it.
01
Define your home
Decide the rough floor area, number of bedrooms, parking, garden, storage and any special requirements.
02
Set the total budget
Separate the budget into land, building, design, tax, finance and site-development costs.
03
Test likely sites
Use zoning, coverage, FAR, road access and site dimensions to see whether the land supports the concept.
04
Confirm with the builder
Ask the builder or architect to review the site before you commit to it.
05
Buy with a real plan
Once the site, house concept and overall budget line up, you can move toward the land contract with much more confidence.
Why this matters:
A cheaper site can become expensive if it needs demolition, retaining-wall work,
ground improvement, difficult utility connections or an unusually costly building design.
A more expensive piece of land may actually produce the better total project.
What can actually be built?
The planning numbers shape the house
The headline land area is only the starting point. Several rules determine the size and form of the building that can go on it.
Building Coverage
How much of the land can the building cover?
The building coverage ratio limits the proportion of the site that can be occupied by the building footprint.
Floor-Area Ratio
How much total floor area can be built?
FAR limits the total floor area relative to the site area. The front road can sometimes impose an additional restriction.
Height
How tall can the house be?
Height districts, slant-plane rules, shadow controls and neighbourhood rules can affect roof shape, upper floors and ceiling heights.
Fire Rules
What construction is required?
Fire-prevention and quasi-fire-prevention zones can affect windows, exterior materials and structural specifications.
Setbacks
Where on the site can the house sit?
Road, boundary, local-plan and wall-setback requirements can reduce the usable building footprint.
Site Shape
Does the geometry work?
Narrow frontage, flagpole access, irregular corners and steep slopes can make an otherwise generous site much harder to design efficiently.
Have a particular house size in mind?
Tell us the rough floor area and layout you want and we can help check
whether a site appears realistic before you spend too much time on it.
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Total project cost
The land price is only one part of the budget
A land-and-build project is easier to manage when the entire project is budgeted from the beginning rather than treating the land and house separately.
🌳
Land
- Purchase price
- Brokerage fee
- Registration costs
- Stamp duty where applicable
- Acquisition tax after purchase
- Survey or boundary work where required
🏗️
Site preparation
- Demolition and disposal
- Ground investigation
- Ground improvement
- Retaining-wall work
- Utility connections
- Temporary works and difficult-site access
🏠
House + completion
- Building contract
- Architect or design fees where applicable
- Building confirmation and inspections
- Exterior works and landscaping
- Air conditioning, curtains and furniture
- Loan and mortgage-related costs
Keep a contingency
New-build projects often reveal costs after the site is studied in more detail. Ground improvement, demolition conditions, retaining walls, utility upgrades and specification changes are common reasons the budget moves. A contingency makes those decisions much easier to absorb.
Choosing who builds it
Housemaker, architect or local builder?
There is no single correct route. The best choice depends on how much design freedom, budget certainty and support you want.
Major housemaker
Usually offers a structured process, established specifications, showrooms, warranty systems and relatively predictable project management.
The trade-off can be less freedom and a higher price for customised work.
Architect + contractor
Often gives the greatest design freedom and can make excellent use of unusual urban sites.
Budget control and contractor selection need careful management.
Local builder / komuten
Can offer good flexibility, local knowledge and strong value, particularly where the builder is familiar with the area and site conditions.
Quality, documentation and project-management style vary more from company to company.
Do not compare building prices only by the headline price per tsubo
Check what is actually included: design, structure, windows, insulation, kitchen and bathroom specifications, external works, utility connections, air conditioning, lighting, curtains, landscaping and any site-specific work. Two quotes can look similar at first and end up very different once exclusions are added.
Typical project flow
Think in stages, not just a move-in date
The exact timing varies, but a land-and-build purchase usually involves several linked decisions rather than one simple transaction.
STEP 01
Plan
Budget, target area, house size, builder route and loan strategy.
STEP 02
Find land
Search, inspect and check road, boundaries, planning rules and site conditions.
STEP 03
Site check
Builder or architect tests the site against the intended house and budget.
STEP 04
Buy the land
Contract, financing, settlement and ownership transfer.
STEP 05
Design + approvals
Final plans, specifications, building confirmation and contractor arrangements.
STEP 06
Build + handover
Construction, inspections, completion, final payment and move-in.
Finance point:
Land-and-build financing can be more complicated than buying a completed house
because the land and construction payments happen at different times. The loan
structure should be considered early, particularly if the builder requires staged payments.
Quick Q & A
Common questions about buying land and building
Should I choose the builder before I buy the land?
You do not necessarily need a final building contract first, but it is very useful to have a builder or architect involved before committing to the land. They can help test whether the site actually supports the house you want.
Can I buy any residential land and build a normal house?
No. Road access, zoning, building coverage, FAR, height controls, fire rules, local planning restrictions, site shape and physical conditions all need checking.
Is an old house on the land a problem?
Not necessarily. Sometimes the seller removes it, sometimes the buyer does. What matters is understanding demolition cost, utilities, any asbestos-related requirements and whether the old structure reveals anything useful about the site.
Can I get a mortgage for the land and construction together?
It can be possible, but the structure varies by lender and project. Land payment, construction deposits and staged progress payments can require bridge financing or a loan designed specifically for a land-and-build project.
How much should I allow for construction costs?
There is no meaningful single figure without knowing the site, builder, structure, floor area and specification. The useful comparison is the total finished-project budget, including site preparation and excluded items.
What if I want to buy the land now and build later?
That can be possible, but check finance, holding costs, construction deadlines attached to any land sale, and whether the planning rules could change before you build.
The most useful land-and-build rule
Do not ask only, “Is this good land?” Ask, “Can this land produce the house I want at a total cost I am comfortable with?” That one question keeps the land, design, builder and budget connected from the beginning.
Thinking about land + build?
Ask Paul & Yuuki to take a look.
If you have already found land, send us the listing. If you are just starting, tell us the areas, budget, preferred house size and what you want the finished home to feel like.
We can help you look at the site as a complete project — road access, boundaries, planning restrictions, likely buildability, total-cost questions and the points worth confirming with the builder before you make an offer.