To obtain a building permit in Hartford, CT, you must submit an application to the citys Department of Development Services. This typically includes a detailed drawing or plan of the proposed fence installation, specifying the location, dimensions, design of the aluminum fence, and proof of property ownership. Additionally, you may need to provide evidence that your project complies with local zoning regulations and codes. Once your application is reviewed and approved by the appropriate municipal authorities, you will be issued a building permit.