High-density vs. Low-density, Gateway and Market Shifts
13.06.2025
High-density vs. Low-density Housing Models: Where Is Demand Shifting?
GLPG has reviewed current market trends and planning dynamics to understand better where demand is moving between high-density and low-density residential schemes.
We’re seeing a shift in buyer and investor appetite, driven by changing lifestyle expectations, affordability challenges, and a renewed focus on design and liveability.
High-density housing, typically apartments and multi-unit schemes, has long been central to urban development, especially in areas where land is scarce and housing targets are high. But there’s growing interest in lower-density models like townhouses, mews-style homes, and suburban communities, particularly among buyers looking for more space, flexibility and access to green areas.
In and around Greater London, hybrid working has played a key role in this shift. Many homeowners are no longer tied to the city centre, making space and quality of life a bigger priority. That said, well-designed high-density schemes in regeneration zones with strong transport links are still in high demand, particularly among younger buyers and renters.
Policy continues to favour higher-density development in growth corridors, especially where infrastructure investment is planned. However, local authorities are increasingly opposing schemes seen as overly dense or lacking in open space, sustainability features, or community benefits.
The Role of Gateway Approvals in Shaping Developer Strategy
Gateway One: Planning Phase Fire Safety Assurance
The introduction of Gateway One, part of the Building Safety Act, has added a significant regulatory step during the planning phase for buildings over 18 metres. It requires developers to submit detailed fire safety strategies at the planning stage, with evidence of design compliance and consideration of evacuation and structural safety.
This requirement has caused some developers to pivot away from high-rise projects, as Gateway One introduces additional risks in terms of time, cost and planning outcomes. Many are now exploring mid-rise or low-rise formats that sit below the threshold, which are often easier to progress through planning and more aligned with local authority preferences.
Gateway Two: Pre-Construction Approval
Gateway Two, which follows planning but precedes the start of construction, introduces an even more rigorous approval process. It requires developers to submit full design and construction information, showing how their project meets all Building Regulations, emphasising structural and fire safety.
This gateway effectively blocks commencement on-site until sign-off is secured by the Building Safety Regulator (BSR). For schemes over 18 metres, it significantly increases pre-construction lead-in time and can create delays if documentation is incomplete or safety assumptions are challenged. This has intensified the move toward schemes that are either under 18 metres or more modular and predictable in design.
Developers must now invest heavily upfront, not just in planning fees and consultants, but also in digital modelling and building information management (BIM) to satisfy Gateway Two requirements.
Gateway Three: Post-Construction Certification
Gateway Three occurs at the completion stage, before occupation. It requires developers to prove that the building was constructed in accordance with approved plans and that all safety measures have been fully implemented. This includes the “golden thread” of information, maintained throughout the project’s lifecycle and handed over to those responsible for the building’s ongoing safety.
A project cannot be occupied until Gateway Three is passed, meaning developers face a final compliance hurdle with real commercial consequences if errors or omissions are discovered late in the process. This fundamental shift in risk management places far greater accountability on developers, designers, and contractors.
For high-density and high-rise schemes, this has prompted more cautious funding, closer scrutiny of construction partners, and a premium on experienced delivery teams who can manage risk across all three gateways.
Blending Density with Design
Design-led approaches that balance efficient land use with liveability, such as mansion blocks or courtyard developments, resonate more with planners and buyers. Developers should consider achieving density without compromising quality and engage early with planning teams to align their schemes with local needs.
From an investment perspective, the rental market supports high-density, amenity-rich locations. However, demand is leaning toward lower-density developments that offer space and a stronger sense of neighbourhood for long-term ownership, particularly family homes.
There is no single model that fits every site. The most successful developments will anticipate evolving preferences while remaining grounded in planning policy and local context and carefully navigate the new regulatory landscape from Gateway One to Gateway Three.
If you’d like to discuss how changing housing demand and regulation might influence your next scheme, please get in touch with a member of our team.
