Recreational Flight to test drones ability to maintain signal connection after landing on a 2 story Town House Complex under construction about 1300ft away. No tenants yet. Earlier in the day, I got permission from a representative of the townhouse complex to test it. The drone was equipped with a spot light and 3mile anti collision light beacons (firehouse). VLOS Maintained . After landing, signal strength was very poor. I expect it was due to the 2 foot perimeter wall /façade surrounding the roof. Cement and steel construction of the town home probably didn't help matters. If it landed, and I lost signal to controller completely, IT WOULD NOT HAVE RETURNED HOME, as it believed it found a new home landing point. To retrieve it, I suppose all I would have had to do is get closer to the building maybe a few hundred feet to re-establish the connection. Anyway, from the original launch point, I sent a signal to take off, but the signal delay was so significant, I pressed the button again, so it went up then started landing again, So, I took over manually and pushed the stick up before it landed again. The delay in signal reception from the r/c to the drone remained for almost the rest of the flight, even though I had no signal delay during the landing. It only occurred after I took off from the roof. It made the drone difficult to fly home as I would overcompensate with the controls when I saw no response from the drone's video feed, but when it did respond It caught my overcompensated control signal. I had to adjust for that until I got close to my original launch point. As you'll see I only had 20% battery left when I landed. The drone was about to do a RTH, but I landed just before it did. The drone would have tried to go back to the roof of the townhouse, because it automatically reset the home point to that location when I landed there. I would have cancelled it anyway, but if I didn't it would have gone back to the town house and landed on the roof again. That would have been embarrassing. Note: I posted, bolded and colored regulations green, so the, Oh so annoying, rule crazy posters don't have to guess.