Difficult to apply for an Ed Visa extension in Thailand. Immigration (Jomtien) require seismic expansion and extraordinary level of proof of tenants residency. Copy of rental contract and Landlords housebook for rental apparently not enough any more. They want housebook for landlords own residency plus reduced to A4 full colour copies of land registery for rental and landlords residency despite City Hall only issuing housebooks upon presentation of land office title deeds. Apparently Immigration don't trust City Halls certification.
(Mind you Jomtiens paperwork demands for a simple retirement extension have also undergone a seismic expansion)