How to check what you can build on a site
To check what you can build on a site, start with the intended use and the exact parcel, then read the responsible authority's current zoning map and written rules together. Aerial imagery adds physical context, but only the local authority can confirm what is permitted.
A promising location can still be unsuitable for the project a team has in mind. Early site screening helps identify the questions that could change the decision before detailed design or a major commitment of time.
The starting point is a defined proposal, an identified parcel and the relevant local records. Satellite imagery adds physical context, such as the visible building layout and surrounding development. It cannot establish development rights or replace a project-specific review of applicable requirements.
Define the proposal and the property
Write down the intended use, approximate scale and any essential operational requirements. A site that suits one proposal may not suit another. Keep the address, parcel reference and boundary together so every source relates to the same location.
Check for obvious mismatches between the parcel record and the visible site. A business address, building footprint and legal parcel are different things. If the boundary or ownership information is unclear, resolve that uncertainty before treating a map-based estimate as a development assumption.
Find the relevant local planning sources
Use the responsible authority's current maps and written rules. Record the source and date checked, then identify any questions that require clarification. Terminology and approval processes differ between jurisdictions, so a checklist from another city is only a starting point.
New York City provides a useful example of why both maps and text matter. Its Zoning Resolution combines mapped districts with regulations governing land use and development. The city's zoning requirements guidance also directs property-specific questions to City Planning. These sources illustrate a research process; they do not establish what is permitted on a particular site elsewhere.
Turn the records into questions for the project
Organise the first review around the proposed use, building envelope, access and any additional mapped requirements. Avoid reducing the result to a single district label. The purpose is to identify the provisions and uncertainties that need further assessment.
For an illustrative retail-site review, the team might need to establish whether the proposed use fits the relevant rules and whether the physical layout could support the operating requirements. Nearby shops alone do not establish that the same proposal is permitted on this parcel.
Compare the records with visible conditions
Imagery can help orient the team to existing structures, surrounding uses and visible access arrangements. Keep the capture date alongside each observation. Changes since capture, obscured features and insufficient detail should remain explicit gaps in the review.
Do not infer legal access, utility capacity, structural condition or ownership from appearance. Where a finding affects the proposal, identify the record, survey or specialist assessment needed to confirm it. Keep preliminary measurements labelled as estimates.
Produce a screening brief with open questions
A useful brief includes the proposal, parcel reference, source links, relevant observations and unresolved issues. Assign each open question to the appropriate next step. The outcome may be a shortlist, a request for clarification or a decision to stop researching the site.
GeoSpectre Zoning reads the city zoning map in about 55 of the largest US cities, with partial coverage elsewhere in the US and in England, and gives the zoning district at a parcel with a first read on whether an intended use fits. Confirm the result with the local authority. Discuss your site-selection requirements, including geography and data availability. Keep formal approvals and project-specific professional review separate from the early screening workflow.
Related guides
Key takeaways
- Define the proposal and confirm the parcel before assessing suitability.
- Read the responsible authority's current maps and written requirements together.
- Use imagery for physical context, not a determination of development rights.
- Record unresolved questions and the evidence needed for the next decision.