In a hotel site business plan, the “volume” rules — zoning, floor-area ratio, height — get priced in early. Design rules governing exterior wall colour, roof form and sign lighting are different: they tend to surface only in the design review that follows schematic design, so they reach the exterior cost estimate late. Under Japan’s Landscape Act, Landscape Planning Areas (景観計画区域) and Landscape Districts (景観地区) are the instruments that regulate this design side head-on. This article first sets out how the two differ in binding force, then lines up the standards of six municipalities — Higashiyama Ward in Kyoto City, Kanazawa, Kurashiki, Nikko, Kamakura and Kutchan Town in Hokkaido — from primary sources, and builds up the cost gap against a standard specification as per-room Capex for a 100-room model.

A Two-Tier Landscape Act — “Notify and Be Advised” vs “No Construction Without Certification”

The Landscape Act, enacted in 2004, provides two levels of design control. The lower tier is the Landscape Planning Area: an area for which a landscape administrative body has adopted a landscape plan. Within it, new construction, extensions and alterations of buildings, repairs or remodelling that change the exterior, and changes of colour generally require a notification at least 30 days before the work begins. The authority checks conformity with the plan’s standards and, where the design does not conform, can recommend changes. The regime centres on the notification duty and recommendations; a non-conforming project is not automatically stopped from starting.

The upper tier is the Landscape District. It is designated by the municipality as a city planning decision, and it can set not only restrictions on form and design but also maximum building heights and minimum site areas. The decisive difference is procedural: to build within a Landscape District, work cannot begin until the mayor certifies that the design conforms to the form-and-design restrictions. If the design does not meet the standards, the project physically cannot move forward, so in a business plan it becomes a critical path on a par with building confirmation.

There is also the Quasi-Landscape District (準景観地区) framework for protecting good landscapes outside City Planning Areas and Quasi-City Planning Areas. Even outside City Planning Areas, a municipality can impose rules equivalent to a Landscape District by designation. Design controls operating in resort areas far from urban centres, as in Kutchan Town in Hokkaido, trace back to this lineage of Quasi-City Planning Areas and quasi-landscape controls.

One more layer matters in practice: the Outdoor Advertisement Ordinance (屋外広告物条例). These are prefectural and municipal ordinances based on the Outdoor Advertisements Act — a separate statute from the Landscape Act — and they regulate maximum sign area, placement, colour and light sources (internally lit and flashing lighting). Because a hotel’s signage is mostly self-use advertising displaying its own name, how this ordinance applies directly determines how much freedom the signage plan has.

Source: Prepared by MetroEngines Research & Consulting based on MLIT, “Overview of the Landscape Act” and “Landscape Districts and Quasi-Landscape Districts”

Six Municipalities’ Standards From Primary Sources — Colour, Roofs, Materials, Signs

The content of design rules differs by municipality, and even by district within the same municipality. Here we took the standards for six municipalities with a deep track record in landscape administration from their published primary sources. Where a municipality has many district categories, we list the representative categories in which hotel development is realistically plausible.

Source: Prepared by MetroEngines Research & Consulting from each municipality’s landscape plans, ordinances and guidelines (primary sources; URLs listed at the end of the article)

The table shows that “landscape regulation” works in three distinct ways. First, Kurashiki and Kyoto have districts that require traditional styles themselves. In Kurashiki’s Class 1 Bikan District, a height of 10m or less and maintaining the characteristics of traditional architectural styles are conditions for certification, so exteriors gravitate toward specifications such as hon-gawara tiles, plaster and lattices. Second, Kamakura combines a volume limit — 15m in height — with relatively lenient colour rules that avoid primary and garish colours, leaving comparatively more freedom in materials. Third, Kutchan Town constrains grading on sloping land itself to “follow the terrain”, which bites on earthworks and site works more than on the exterior.

What stands out in Kanazawa is that, where areas overlap the former castle town’s cultural landscape area, even indoor advertising is treated as outdoor advertising. Signs placed behind glass and illuminated signs facing the street from the lobby fall under the placement, area and colour standards, so the facade plan and the interior plan cannot be considered separately. It is a type of regulation that affects the order of the design process.

Nikko casts a wide net with its entire city designated as a Landscape Planning Area, while offering a landscape formation subsidy for work that conforms to the standards. Exterior work, gates and fences, retaining walls and railings are covered up to 1/2 of cost with a ¥300,000 cap (¥700,000 where a wall setback is involved in a landscape formation priority area); screening of building equipment and colour changes up to 1/2 with a ¥300,000 cap; and planting and signs up to 1/2 with a ¥100,000 cap. Its contribution to a full renovation of a lodging property is limited, but it is a meaningful level for one-off townscape improvements such as site works, signage and equipment screening. For renewal plans at existing properties, it is worth confirming at pre-consultation whether the work can be split by cost line for separate applications.

Building Up a 100-Room Model — Walls, Roof and Signage Add ¥59k–¥507k per Room

This is the core of the article. We build up, across three cost lines — exterior walls, roof and signage — the difference between building a hotel to a standard specification and making it conform to design rules. It is a simplified estimate with every assumption disclosed; actual quotes move significantly with site conditions, structure and specification grade.

Source: MetroEngines Research & Consulting (simplified estimate; actual investment decisions require a detailed feasibility study)

Source: MetroEngines Research & Consulting (±20% applied only to unit-cost-linked lines such as wall materials and pitched roof; rooftop equipment screening, signage and notification work held fixed)

Even with unit costs moving ±20%, Level 3 per-room Capex stays within ¥438,000–¥576,000, or 2.07–2.72% of construction cost. Even after allowing for uncertainty in unit cost assumptions, the exterior cost of design rules does not exceed 3% of construction cost. This cost line alone is not structured to make or break a project.

In sum, the exterior Capex added by design rules themselves falls within ¥59,000 to ¥507,000 per room, or 0.28% to 2.39% of construction cost. That is not a scale that decides a business plan. Given that the per-tsubo construction cost rose 41% in two years, from ¥1.38M in 2022 to ¥1.95M in 2024, the design-rule premium is small enough to be lost within construction price swings. Looking “at design alone”, landscape regulation is not the main driver of cost — that is the first conclusion.

There is, however, an item deliberately left out of this estimate. A pitched-roof requirement changes character once it is multiplied by a height limit.

Pitched Roofs Eat Into Height Limits — How Design Rules Turn Into Volume Rules

Kyoto City’s “Design Standards for Buildings” define a pitched roof as a gable, hip or hip-and-gable roof (among others) with a pitch of 3/10 to 4.5/10. Put a 3/10 gable roof on a building 20m deep and the height from eaves to ridge is 20m ÷ 2 × 0.3 = 3.0m. Because building height is measured to the ridge, those 3.0m consume the height allowance in full.

Consider a zone with a 15m maximum height. With a flat roof and 3.6m floor-to-floor, four storeys at 14.4m fit, and 25 rooms per typical floor secures 100 rooms. Put a 3/10 pitched roof on the same site and the eaves must stay at or below 15m − 3.0m = 12.0m, which with 3.6m floor-to-floor allows only three storeys at 10.8m. The fourth storey cuts into the roof space, so only part of it is usable as guest rooms.

25 rooms per typical floor × 4 storeys = 100 rooms becomes 3 storeys of 75 rooms + 10 roof-space rooms = 85 rooms, a difference of 15 rooms. Taking Higashiyama Ward’s estimated settled ADR (12-month average) of ¥23,600, 75% occupancy (a full-year assumption) and a 30% GOP margin, annual GOP per room is about ¥1.94M, or about ¥29M a year for 15 rooms. That matches the ¥50.72M total exterior Capex built up in the previous section in less than two years.

Source: MetroEngines Research & Consulting (15 rooms lost × estimated settled ADR × 365 days × occupancy × 30% GOP margin. The shaded cell is the base case in the text: Higashiyama Ward’s estimated settled ADR of ¥23,600 and 75% full-year occupancy)

Across both axes, the annual GOP opportunity cost of losing 15 rooms ranges from about ¥19M to just under ¥41M. Even the most conservative combination (ADR ¥18,000, 65% full-year occupancy) gives about ¥19M, overtaking the ¥50.72M total Level 3 exterior Capex from the previous section in under three years. This confirms that the relationship holds whichever way the assumptions move: design rules affect project economics not through exterior cost itself, but when they translate into lost rooms via roof form. Conversely, where the section design avoids losing rooms, the cost of design rules stays within the band in Table 3-2 (¥438,000–¥576,000 per room).

That said, this is the upper-bound picture that assumes no design solution. In practice, designers create room to absorb the impact by compressing floor-to-floor height to around 3.2m, turning the roof space into guest rooms that exploit the ceiling height, lowering ridge height with mono-pitch or hip roofs, or articulating the plan depth so that smaller roofs are laid over separate sections. Whether design rules translate into lost volume depends on whether roof form and floor-to-floor height were studied together at the earliest stage of schematic planning. That is the practical reason to put a review of the section plan — ahead of the exterior estimate — on the agenda for pre-consultation with the landscape authority. Height constraints as such, including the feasibility line worked back from an absolute height limit, are a separate question from the design rules discussed here.

Room Stock and Rates in Tightly Regulated Towns — 9.3 Rooms per Property in Higashiyama vs 27.7 in Shimogyo

Having looked at the cost of design rules, we next lay out the markets these towns actually face. For the six municipalities, we aggregated the properties tracked by MetroEngines Research with a confirmed listing record on OTAs and similar channels, and calculated the number of properties, room stock and the average estimated settled ADR over the most recent 12 months (September 2025–August 2026).

Source: MetroEngines Research & Consulting. Properties covered for ADR: Kutchan Town N=21, Higashiyama Ward N=47, Kamakura N=18, Nikko N=117, Kanazawa N=116, Kurashiki N=42, Shimogyo Ward N=162, Nakagyo Ward N=105 (properties in the estimated settled ADR calculation; monthly median)

The first thing that stands out is the contrast within Kyoto City. Higashiyama Ward has 9.3 rooms per property, Shimogyo Ward 27.7 and Nakagyo Ward 27.3 — a roughly threefold gap within the same city. Higashiyama concentrates historic-heritage-type Aesthetic Districts and Historic Landscape Preservation and Improvement Districts, and it is where the most detailed height and design standards apply. Buildings there struggle to grow in scale, and the room stock has consequently formed as a collection of small properties. Estimated settled ADR is ¥23,600 in Higashiyama against ¥15,600 in Shimogyo and ¥16,900 in Nakagyo, putting Higashiyama at about 1.5 times Shimogyo’s level.

Kamakura’s figures are even more extreme. Its room stock is just 133 properties and 1,644 rooms. According to the city, total visitor arrivals in 2024 were about 15.94 million, with 504,000 overnight guests. This structure — a thin room base relative to visitor volume — can be read in its estimated settled ADR of ¥19,800, +40.4% above the Kanagawa Prefecture average. The Kamakura Landscape District of about 224.8 ha and its 15m height cap are among the factors shaping this thin supply.

The scatter plot shows that municipalities and wards with fewer rooms per property tend to have higher estimated settled ADR. However, this is correlation, not causation. Areas with strict design rules are, in the first place, where tourism assets such as shrines and temples, traditional streetscapes and ski resorts are concentrated, and the numbers alone cannot separate demand-side factors from regulatory ones. We cannot rule out that rates would have been high even without regulation. What can be said is limited to confirming that regulation and high rates coexist.

Kanazawa is the only case below its prefectural average, by 8.2%, but this reflects the nature of the benchmark rather than a low level in the city. The Ishikawa Prefecture average includes high-priced onsen ryokan, starting with Wakura Onsen, and its property-type mix differs sharply from that within Kanazawa City (mainly limited-service and city hotels). Kanazawa’s room stock of 17,335 is the largest of the six municipalities, and its rate level is best read as that of a city where supply has accumulated. Kanazawa is also the second-largest cluster of machiya (traditional townhouse) lodgings after Kyoto — a lodging format characteristic of towns with strong design rules.

Finally, it is worth looking at how rates move in a strongly regulated town, including seasonality. Kutchan Town has a Landscape District within its Quasi-City Planning Area, regulating form and design across 17 districts and about 2,438 ha, and since 1 June 2024 a development permit under the Landscape District ordinance has also been required. It is a market with clear supply-side constraints, and by the same token, rate increases in peak demand periods show through directly.

Estimated settled ADR in February 2026 was ¥63,500, 4.9 times the ¥13,100 of October 2025, the trough within the same 12-month period. It also keeps stepping up from ¥38,200 in February 2024 and ¥53,300 in February 2025. On an annual average basis the increase is +2.7% YoY, but isolating peak-season rates shows far stronger growth. In a market where supply cannot be added, rising demand flows into rate rather than room count — the textbook picture appears here. Landscape regulation is one of the mechanisms that institutionally locks in that “cannot be added”.

Reading Design Rules — A Mechanism That Adds Cost, and One That Protects Scarcity

We summarise the article in three points.

In collateral valuation and due diligence, the first thing to pin down is which layer the site sits in. There are four points: whether it is in a Landscape Planning Area or a Landscape District, whether it is in a Quasi-Landscape District, and which regulatory zone of the Outdoor Advertisement Ordinance applies. In a Landscape District, certification becomes a condition for starting construction, so for deals that anticipate a renewal involving design changes after acquisition, stating the certification outlook explicitly as a precondition reduces rework later. In areas such as Kanazawa’s former castle town, where even indoor advertising is covered, note that signage plans for tenant spaces fall within this framework as well.

Finally, the assessment from an investment perspective. Design rules add exterior cost. At the same time, they institutionally slow the pace at which new rooms can be added in that town. Higashiyama Ward’s 9.3 rooms per property, Kamakura’s thin stock of 1,644 rooms and Kutchan Town’s February rate reaching ¥63,500 are all the flip side of this “hard to add” quality. Correlation should not be confused with causation, but the relationship itself — demand flowing into rate in markets where supply cannot be added — appears consistently in the figures for all six municipalities.

For owners of existing properties, this structure is itself a basis for upside. The cost of bringing a property into conformity with design standards during a renovation is in the range of tens of thousands to hundreds of thousands of yen per room, and some municipalities, such as Nikko, offer subsidies for conforming work. Aligning the exterior with the town’s standards is an expense, but it is also an investment that secures the property’s position as one of the rooms that will not multiply. Rather than avoiding strongly regulated towns, read the content of the regulations early and build them into the section and the exterior. That is the most profitable way to approach this design layer.